# Orthopedic Surgical Planning: Imaging and Templating


## Key Takeaways

- Orthogonal radiographic views (craniocaudal and mediolateral) of the entire bone, including adjacent joints, are the foundational diagnostic standard for fracture assessment. Magnification must be corrected using a known-diameter marker placed at the bone level to ensure accurate implant templating and screw length selection.
- Computed Tomography (CT) is indicated for comminuted, periarticular, or angular limb deformities, providing three-dimensional visualization essential for precise planning of complex reductions, fragment orientation, and corrective osteotomies. CT data also enables advanced workflows like 3D printing for patient-specific guides and anatomical models.
- Plate length selection requires spanning the fracture with at least three cortices of purchase in each main fragment, and for bridging constructs, the plate must encompass the entire zone of comminution. Screw placement prioritizes holes closest to the fracture line first, then the far ends, ensuring purchase in intact bone.
- Plate contouring is critical for nonlocking plates to achieve stability and prevent malalignment; templating on radiographs or 3D models guides bending with plate benders. Screw diameter selection should not exceed approximately 30% of bone diameter to mitigate the risk of iatrogenic fracture.
- Construct design necessitates choosing between neutralization (lag screws and plate), compression (DCP or locked compression plates), or bridging (plate spanning comminution) based on fracture configuration. Screw density influences strain distribution, with fewer screws on bridging plates potentially promoting callus formation.
- Advanced planning with CT and 3D printing offers significant benefits for complex cases by allowing virtual surgical rehearsal and the creation of patient-specific instruments, though its cost-effectiveness must be weighed against the complexity and risk of conventional planning.

---

Preoperative planning determines the difference between a fracture repair that fails and one that proceeds uneventfully. This article explains how to use radiographs and advanced imaging to plan fracture fixation in dogs and cats, with emphasis on implant selection and templating. It serves the practicing veterinarian who performs orthopedic surgery and needs a repeatable method for converting diagnostic images into a concrete surgical plan. The clinical question addressed is straightforward: given this patient, this fracture, and this imaging study, which implants should be selected, where should they sit, and what will the assembled construct look like before the first incision is made?

Planning begins with a complete understanding of the fracture geometry, the patient's size and conformation, and the mechanical demands the repair must withstand. Radiography remains the primary modality for most fracture planning because it is widely available, inexpensive, and adequate for the majority of diaphyseal fractures. Advanced imaging, particularly computed tomography (CT), becomes necessary when fractures are comminuted, periarticular, or associated with angular limb deformities. Three-dimensional printing and computer-assisted planning have expanded the surgeon's ability to rehearse complex corrections before entering the operating room, as demonstrated in case series describing patient-specific saw guides for antebrachial deformities and 3D-printed models that inform surgical decisions [Worth et al., 2019](https://pubmed.ncbi.nlm.nih.gov/30965369/). The same technology can identify cases where surgery is not the best option, preventing poor outcomes [Thomas et al., 2025](https://pubmed.ncbi.nlm.nih.gov/40336818/).

## At a Glance

| Parameter | Decision or Action |
|---|---|
| Orthogonal radiographs | Obtain craniocaudal and mediolateral views of the entire bone, including both adjacent joints |
| Fracture classification | Describe configuration, location, comminution, and articular involvement before selecting implants |
| Plate length | Span at least three cortices of purchase on each side of the fracture in the near cortex |
| Screw placement | Fill the plate holes closest to the fracture line first, then the far ends |
| Plate contouring | Template on the radiograph, then contour the plate to match the bone surface |
| Advanced imaging | Use CT for comminuted, periarticular, or deformed fractures, consider 3D printing for complex cases |
| Implant inventory | Confirm available plate sizes, screw diameters, and locking versus nonlocking options before surgery |
| Radiographic magnification | Calibrate using a known-diameter marker placed at the bone level |

## Imaging Modalities and Their Roles

### Radiography: The Foundation of Fracture Planning

Two orthogonal views are the minimum standard for fracture assessment. Oblique views add information about comminution and displacement that may be invisible on standard projections. The radiograph must include the joint proximal and distal to the fracture, because unrecognized articular fractures or luxations change the surgical approach and implant selection. Magnification is a consistent source of planning error. A marker of known diameter placed at the level of the bone being measured allows correction of magnification, and the same correction factor must be applied to all measurements on that radiograph.

### Computed Tomography and Cross-Sectional Imaging

CT provides three-dimensional information that plain radiographs cannot. Fracture lines, fragment displacement, and the shape of the medullary canal are visualized without superimposition. For periarticular fractures, CT reveals articular step defects and fragment orientation that determine whether lag screw fixation or plate arthrodesis is appropriate. CT is also the basis for computer-assisted planning and 3D printing workflows. Segmentation of CT data allows virtual surgical planning, production of patient-specific cutting guides, and creation of anatomical models that can be sterilized and used intraoperatively [Thomas et al., 2025](https://pubmed.ncbi.nlm.nih.gov/40336818/). The same imaging data support three-dimensional geometric morphometric analysis, which has applications in orthopedic surgical planning and biomechanical modeling [Szara et al., 2026](https://pubmed.ncbi.nlm.nih.gov/41860003/).

The decision to obtain CT should be made when the information it provides will change the surgical plan. Comminuted fractures with fragments that cannot be reduced anatomically benefit from CT because the surgeon can plan a biological repair that bridges the fracture without attempting fragment reconstruction. Angular limb deformities require CT for accurate measurement of the deformity plane and magnitude, and the resulting data can be used to design corrective ostectomies with 3D-printed guides [Worth et al., 2019](https://pubmed.ncbi.nlm.nih.gov/30965369/).

## Templating Principles

### Measuring the Fracture and Selecting Implant Length

The first templating step is to measure the length of the bone and the distance from the fracture to the nearest joint. A plate should span the fracture with at least three screws on each side, and the plate length is chosen accordingly. For comminuted fractures treated with bridging osteosynthesis, the plate must span the entire zone of comminution and engage intact cortex proximal and distal to it. The plate is positioned on the radiograph tracing, and screw holes are marked to confirm that each screw will engage bone instead of fall within a fracture line or exit through a joint.

### Plate Contouring and Screw Selection

Plates are contoured to match the bone surface. The template is cut from the radiograph tracing and transferred to the plate, which is bent with plate benders. Contouring is performed gradually, checking the plate against the template repeatedly to avoid overbending. Locking plates do not require precise contouring because the screw head locks into the plate, but nonlocking plates depend on plate-to-bone contact for stability. A plate that is contoured incorrectly will pull the bone into malalignment when nonlocking screws are tightened.

Screw diameter is selected based on bone size and plate hole size. Cortical screws provide purchase in the near and far cortices, while cancellous screws are used in metaphyseal bone. Locking screws are indicated when bone quality is poor, when the fracture configuration prevents plate-to-bone compression, or when a bridging construct is planned. The screw length is estimated from the radiograph and confirmed intraoperatively with a depth gauge.

## Construct Design and Mechanical Considerations

### Neutralization, Compression, and Bridging

The fracture configuration determines the mechanical role of the plate. A simple transverse fracture can be compressed with a dynamic compression plate or a locking compression plate used in compression mode. A comminuted fracture is bridged, with the plate bearing the full load until callus forms. A wedge fracture is neutralized, with lag screws compressing the wedge and the plate protecting the repair from bending and torsional forces. The surgeon must decide which mode applies before selecting the plate and screw pattern, because the same plate is applied differently for each mode.

### Screw Density and Plate Strain

Screw density refers to the number of screws per plate hole. Maximum screw density is not always desirable. A bridging plate with fewer screws distributes strain over a longer plate segment, which can promote callus formation. Conversely, a compression plate requires screws close to the fracture to maintain compression. The planned screw density should be recorded on the templating sheet so that the intraoperative execution matches the plan.

## Advanced Planning and Patient-Specific Instruments

Computer-assisted planning using CT data allows the surgeon to simulate the entire procedure before surgery. For angular limb deformities, the location and orientation of the corrective ostectomy are determined virtually, and a saw guide is printed to direct the osteotomy at surgery [Worth et al., 2019](https://pubmed.ncbi.nlm.nih.gov/30965369/). Three-dimensional models serve multiple purposes: they allow the surgeon to rehearse the procedure, they can be used to contour plates before surgery, and they help the surgeon decide whether surgery is feasible at all [Thomas et al., 2025](https://pubmed.ncbi.nlm.nih.gov/40336818/). The cost and time required for these workflows are justified when the deformity or fracture is complex enough that conventional planning carries a high risk of malreduction.

## Limitations and Uncertainty

The evidence for advanced imaging and 3D printing in veterinary orthopedics consists largely of case series and technical reports. These demonstrate feasibility and describe outcomes, but they do not establish superiority over conventional planning in controlled comparisons. The surgeon should weigh the additional cost, time, and equipment requirements against the expected benefit for each case. A simple diaphyseal fracture in a small dog rarely requires CT, while a complex periarticular fracture in a large breed dog may benefit substantially from advanced planning.

## The Preoperative Planning Sequence

A structured planning sequence reduces intraoperative decisions and shortens anesthetic time. Begin with orthogonal radiographs of the entire bone, including the joint above and below. Add oblique projections when the fracture configuration is unclear. Contralateral limb radiographs provide a template for normal anatomy and are essential for angular deformity cases.

When radiographs suggest comminution, articular involvement, or a complex deformity, computed tomography is indicated. CT eliminates superimposition and provides true cross-sectional geometry of the bone. For antebrachial deformities, CT with computer-assisted planning allows the surgeon to determine wedge location and orientation before surgery, and patient-specific saw guides can be produced with three-dimensional printing [Worth et al., 2019](https://pubmed.ncbi.nlm.nih.gov/30965369/). Three-dimensional geometric morphometric methods applied to CT data support orthopedic surgical planning and biomechanical modeling [Szara et al., 2026](https://pubmed.ncbi.nlm.nih.gov/41860003/).

The sequence is:

1. Obtain orthogonal radiographs, including joints above and below the fracture.
2. Assess fracture configuration, comminution, and articular involvement.
3. Measure bone length and diameter on the contralateral limb.
4. Decide whether CT or 3D printing will change the surgical approach.
5. Select the implant system before entering the operating room.
6. Template the implant on the radiograph or virtual model.
7. Prepare a written plan for plate contour, screw position, and reduction sequence.

## Decision Points That Change the Plan

Patient size and weight determine the implant system. A 5 kg cat and a 45 kg dog with similar fracture configurations require different plate sizes, screw diameters, and construct stiffness. The available implant inventory in the practice changes what can be planned. If the practice stocks only 2.0 mm and 2.7 mm plates, a femoral fracture in a 35 kg dog must be referred or managed with an alternative method.

Bone diameter on the contralateral radiograph guides plate selection. The plate width should not exceed approximately 40% of the bone diameter at the fracture site. Screw diameter should not exceed approximately 30% of bone diameter to reduce the risk of iatrogenic fracture through the screw hole.

Patient status changes the plan. A hemodynamically unstable patient with multiple injuries may be better served by a temporary external fixator followed by delayed definitive fixation. A patient with compromised skin over the fracture site may require a technique that avoids incising the damaged area. The surgeon must weigh the mechanical ideal against what the patient can tolerate.

## Implant Selection Criteria

| Implant | Best Indication | Selection Criteria | Limitations |
|---|---|---|---|
| Bone plate | Diaphyseal fractures, articular fractures, comminuted fractures | Sufficient plate length for 3 screws per main fragment, plate width < 40% bone diameter | Requires contouring, stress risers at plate ends |
| Interlocking nail | Diaphyseal fractures of femur, tibia, humerus | Canal diameter sufficient for nail, intact opposite cortex for load sharing | Not suitable for very short fragments or articular fractures |
| External fixator | Open fractures, infected fractures, temporary stabilization | Soft tissue access, multiple pin configurations | Pin tract infection, patient compliance required |
| Cerclage wire | Oblique or spiral fractures with intact cortex | Fragment length at least 2 times bone diameter | Does not resist bending or torsion alone |

The decision between plate and nail depends on fracture location and comminution. Plates provide excellent control of alignment and are versatile across fracture types. Interlocking nails offer load sharing and preserve periosteal blood supply but require a reasonably intact bone column. External fixation is the most adaptable system for contaminated or open fractures.

## Templating the Fracture

Templating converts radiographic measurements into a concrete implant plan. Place the radiograph on a viewing box or digital workstation. Use the calibration marker or known object size to correct for magnification. Measure the length of the intact contralateral bone and compare it with the fractured side to determine the expected final length.

For plate templating, use a transparent template overlay or digital templating software. Position the template over the bone image so that the plate follows the normal contour of the bone. Mark the screw hole positions on the radiograph. The goal is at least three screws in each main fragment, with the plate spanning the fracture zone. For comminuted fractures treated with bridging technique, the plate must span the entire comminuted zone without screws in the fragmented area.

Digital templating on CT data allows more precise planning. Three-dimensional models can be rotated and viewed from any angle, and virtual implants can be positioned before surgery [Thomas et al., 2025](https://pubmed.ncbi.nlm.nih.gov/40336818/). This approach is particularly valuable for periarticular fractures where screw placement must avoid the joint surface.

## The Step-by-Step Planning Checklist

Use this checklist for every fracture case before entering the operating room.

- [ ] Orthogonal radiographs obtained, including joints above and below
- [ ] Contralateral limb radiographs available for comparison
- [ ] Fracture classified and comminution assessed
- [ ] Articular involvement ruled out or confirmed
- [ ] CT performed when fracture complexity or deformity warrants it
- [ ] Bone length and diameter measured on the intact side
- [ ] Implant system selected based on patient size and fracture location
- [ ] Plate length determined: at least 3 screws per main fragment
- [ ] Plate contour planned on the radiograph or 3D model
- [ ] Screw positions marked, avoiding the fracture zone and joint surfaces
- [ ] Reduction sequence planned: which fragment to reduce first
- [ ] Backup plan identified if the primary implant fails or is unavailable
- [ ] Written plan shared with the surgical team before induction

## Documentation and Communication

Record the preoperative plan in the medical record before surgery. Include the fracture classification, implant selection, plate length, screw positions, and expected reduction sequence. This documentation serves multiple purposes. It provides a reference during surgery, supports postoperative review, and communicates the plan to colleagues who may be involved in after-hours care.

Postoperative radiographs should be compared with the preoperative plan to assess whether the planned implant position was achieved. Discrepancies between plan and execution should be documented and analyzed. This review process improves planning accuracy over time.

The [American College of Veterinary Surgeons](https://www.acvs.org/small-animal/) provides client-oriented summaries of surgical conditions and expected outcomes that can support owner communication. The [MSD Veterinary Manual](https://www.msdvetmanual.com/) offers species-specific reference material on fracture management and implant selection. These resources support the planning conversation with owners and the clinical decision process.

## Equipment and Consumable Choices

The implant inventory determines what can be planned. A practice performing fracture repair must stock a range of plate sizes, screw lengths, and drill bits matched to the implant system. Plate bending tools must be available and in good condition. Power equipment must be compatible with the drill bits and saw blades used for the planned procedure.

For patient-specific instruments, the surgeon needs access to CT imaging and a 3D printing service. The cost and turnaround time for printed guides must be factored into the planning timeline. In the antebrachial deformity series, saw guides were produced from CT data and used to direct the oscillating saw during ostectomy [Worth et al., 2019](https://pubmed.ncbi.nlm.nih.gov/30965369/). This workflow requires planning several days before surgery.

Species differences affect equipment choices. Feline bones are smaller and require smaller implants and drill bits. The same fracture configuration in a cat and a small dog may require different plate sizes because of bone diameter differences. The surgeon must adapt the plan to the individual patient, not apply a generic template.

## Recognized Complications and Early Detection

Fracture planning failures typically declare themselves in one of three phases: intraoperatively, in the early postoperative period, or at the time of expected bone healing. The most common intraoperative complication is implant-bone mismatch, where the selected plate does not conform to the planned contour or the screw trajectory violates the fracture plane. Detect this by confirming plate position against the templated radiograph before final screw insertion and by using intraoperative fluoroscopy when available.

Early postoperative complications include loss of reduction, implant loosening, and construct failure. Serial radiographs at 2, 4, 8, and 12 weeks postoperatively allow detection of progressive screw lucency, plate bending, or gap collapse before catastrophic failure occurs. Compare each study to the immediate postoperative radiographs, not to memory. A change in implant position of more than 2 mm or any new peri-implant lucency warrants reassessment of the loading environment and the patient's activity restriction.

Delayed union and nonunion appear radiographically as persistent fracture lines, smooth sclerotic bone ends, or absence of bridging callus at the expected time frame. The expected healing time varies with patient age, fracture location, and construct stiffness, so the clinician must establish a baseline expectation during planning and revisit it at each recheck.

| Observation | Likely cause | Discriminating check |
|---|---|---|
| Screw lucency on 4-week radiographs | Implant loosening or infection | Compare to immediate postoperative film, assess clinical lameness and soft tissue swelling |
| Plate bending without screw failure | Excessive load or insufficient plate stiffness | Review patient activity history, consider external coaptation or activity restriction |
| Progressive fracture gap widening | Loss of reduction or screw pullout | Measure gap on serial radiographs, assess screw purchase on orthogonal views |
| Absent callus at 8 weeks | Excessive construct stiffness or vascular compromise | Evaluate plate working length, consider bone stimulator or staged revision |
| Peri-implant lucency with fever | Surgical site infection | Culture and sensitivity, consider implant removal after union |

## Common Planning Errors and Corrections

The most frequent error in fracture planning is underestimating the number of cortices of purchase required proximal and distal to the fracture. A minimum of six cortices of purchase on each side of the fracture is a reasonable starting point for most diaphyseal fractures in dogs and cats, though this must be adjusted for bone quality, fracture configuration, and the patient's expected activity level. When in doubt, add one additional screw hole instead of removing one.

A second common error is selecting an implant based on the radiograph alone without accounting for the three-dimensional geometry of the bone. Radiographs compress a curved bone into two dimensions, and a plate that appears appropriately contoured on a lateral projection may be grossly malpositioned in the craniocaudal plane. Cross-sectional imaging, when available, provides the necessary spatial information. Three-dimensional geometric morphometric methods have been applied to orthopedic surgical planning, and computed tomography with segmentation allows virtual reduction and implant selection before entering the operating room ([3D geometric morphometrics in veterinary science](https://pubmed.ncbi.nlm.nih.gov/41860003/)).

Students and less experienced clinicians frequently misjudge the working length of a plate. A plate with screws placed close to the fracture on both sides behaves as a stiff construct with high plate strain at the fracture gap, which can suppress callus formation. Conversely, leaving the screws adjacent to the fracture empty increases working length and reduces plate strain but may compromise rotational stability. The corrective action is to plan screw position explicitly on the templated radiograph, marking which holes will be filled and which will remain empty, before the surgical approach begins.

A third error is failure to account for the soft tissue envelope. The plan must consider also the bone but also the muscle, vascular, and nerve structures that will be exposed and retracted. The relationship between mechanical manipulation and physiological tissue response is increasingly recognized as a critical factor in surgical outcome, with studies demonstrating strong coupling between bone displacement and vascular flow changes during reduction maneuvers ([path planning for fracture reduction robots](https://pubmed.ncbi.nlm.nih.gov/42012574/)).

## Evidence Limitations and Divergent Expert Opinion

The evidence base for veterinary fracture planning is largely composed of case series and expert opinion instead of controlled trials. Patient-specific instruments and three-dimensional printed guides have been reported in small case series for angular limb deformities, with outcomes including good radiographic alignment in most cases but also complications such as screw loosening and residual rotational deformity ([computer-assisted surgery using 3D printed saw guides](https://pubmed.ncbi.nlm.nih.gov/30965369/)). These reports demonstrate feasibility but do not establish superiority over conventional techniques, and the technology carries additional cost, imaging requirements, and planning time.

Expert opinion diverges on several practical points. The optimal screw density for a given fracture configuration remains contested, with some surgeons advocating maximal screw fill for stability and others favoring reduced density to increase working length and promote callus. The role of plate working length in fracture healing is similarly debated. There is also disagreement about the threshold at which a fracture should be managed with a bridging plate instead of anatomical reduction and compression, particularly in comminuted fractures where the soft tissue envelope has been compromised.

Three-dimensional printing has been used also to create guides but also to produce anatomical models that allow the surgeon to rehearse the procedure or to determine that surgery is not the best option, potentially preventing a poor outcome ([orthopedic applications of 3D printing in canine veterinary medicine](https://pubmed.ncbi.nlm.nih.gov/40336818/)). This decision-support role is valuable, but the evidence for improved outcomes compared with conventional planning remains limited.

## Referral and Escalation Criteria

Referral to a board-certified surgeon or specialist center is appropriate when the planned procedure exceeds the clinician's experience, when the required implants or equipment are unavailable, or when the fracture configuration presents a high risk of complication. Specific indications include comminuted articular fractures, fractures in very small or very young patients where implant size is marginal, and fractures that have already failed one surgical intervention.

Laboratory involvement is warranted when infection is suspected, either preoperatively or in the setting of delayed healing. Aerobic and anaerobic culture of deep tissue samples, not superficial swabs, should guide antimicrobial selection. Histopathology of bone and soft tissue samples is indicated when neoplasia is in the differential diagnosis.

Regulatory reporting obligations vary by jurisdiction and are not uniform across regions. The World Organization for Animal Health maintains international standards for animal health and welfare that may apply in certain contexts ([WOAH terrestrial animal health code](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/)), and the American Veterinary Medical Association provides practice resources that address professional obligations ([AVMA practice resources](https://www.avma.org/resources-tools)). Clinicians should be familiar with the requirements of their own licensing body and practice jurisdiction.

## Frequently Asked Questions

### How Much Does Advanced Imaging and 3D Printing Add to the Cost of Fracture Planning, and When Is It Justified?

CT and 3D-printed models add meaningful cost and scheduling time to a case. The expense is justified when angular deformity correction, articular reconstruction, or complex periarticular fractures demand geometric precision that plain radiographs cannot provide. Patient-specific cutting guides and printed models have reduced intraoperative time and improved alignment in reported canine cases, but the evidence base remains case series level instead of controlled trials. For straightforward diaphyseal fractures in stable patients, radiography and manual templating remain appropriate and cost-effective. Discuss the additional fee with the owner before imaging, and document the clinical rationale for advanced planning in the medical record. Referral to a surgical specialist may be more cost-effective than purchasing or accessing printing services in practice.

### What Should I Do When the Ideal Implant or Equipment Is Not Available?

Plan the fixation around what is actually in stock instead of what the textbook recommends. A bridging plate with fewer screws than ideal is safer than a plate that is too short for the fracture zone or a screw of the wrong diameter placed in a critical position. External skeletal fixation is a robust alternative when plating hardware is unavailable, and it allows fracture reduction without requiring a large implant inventory. If the available plate cannot achieve at least three cortices of purchase in the main proximal and distal fragments, consider a different construct or referral. Document the implant shortage and the rationale for the alternative plan in the record. The [ACVS animal health resources](https://www.acvs.org/small-animal/) provide guidance on expected outcomes for common fixation methods that can inform this decision.

### How Does Fracture Planning Differ Between Cats and Small-Breed Dogs?

Feline and small-breed canine bone is smaller in diameter and often has thinner cortices than that of large-breed dogs, which changes screw purchase and plate selection. A 2.0 or 2.4 mm plate may be appropriate where a 3.5 mm plate would be used in a larger patient, and locking screws may be preferred when cortical thickness is marginal. The radius and tibia in toy breeds tolerate less implant bulk relative to bone diameter, so soft tissue coverage and plate prominence become planning considerations. Radiographic magnification error is proportionally larger on small bones, making calibration markers essential. Growth plate status matters more in immature small-breed patients, where implant selection must account for continued skeletal growth. Species-specific reference ranges for bone dimensions are limited, so intraoperative assessment of screw purchase remains the final check.

### What Records Should I Keep for Fracture Planning and Templating?

The medical record should contain the preoperative imaging study, the templating worksheet or digital plan, the implant inventory used, and the rationale for construct selection. Include the measured bone diameter, the planned and actual plate length, screw positions, and any deviation from the preoperative plan with the reason for that change. If CT data or 3D-printed models were used, store the imaging study and note the segmentation and planning software in the record. Postoperative radiographs should be compared with the preoperative plan to document reduction quality and implant placement. This documentation supports outcome assessment, medicolegal defense, and communication with referral centers. The [AVMA practice resources](https://www.avma.org/resources-tools) offer general guidance on medical record content and retention that applies to surgical planning documentation.

### How Do I Explain a Complex Surgical Plan to an Owner Who Expects a Simple Answer?

Owners need the indication for surgery, the expected outcome, and the main risks, not a full biomechanical lecture. Use the preoperative radiographs or a printed 3D model to show the fracture configuration and the planned implant position. Explain that the goal is stable alignment that allows bone healing, and that the specific implant choice depends on fracture geometry and bone quality. If advanced imaging is recommended, state what additional information it provides and how it changes the surgical approach or reduces risk. Be honest about uncertainty, including the possibility of revision surgery. The [MSD Veterinary Manual](https://www.msdvetmanual.com/) provides client-oriented summaries of fracture repair and expected outcomes that can supplement your explanation. Document the conversation and the owner's consent in the record.

### When Should I Refer a Fracture Case instead of Attempt Fixation with Limited Resources?

Refer when the fracture configuration exceeds your implant inventory, when articular reconstruction requires equipment you do not have, or when a previous fixation has failed and the bone stock is compromised. Refer also when you cannot achieve anatomic reduction of an articular surface or when the patient has concurrent injury that complicates anesthesia and recovery. A printed model or CT study can be sent with the referral to facilitate planning at the receiving center. Early referral is preferable to a salvage procedure performed with inadequate hardware. The [WOAH terrestrial animal health standards](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/) address professional obligations around surgical competence and animal welfare that apply to this decision. If referral is not feasible, choose the simplest construct that provides stable fixation and document the limitations of the plan.

## Related Clinical & Scientific Guides

* [Perioperative Antibiotic Prophylaxis: Timing and Selection](/knowledge/veterinary-medicine/veterinary-surgery/perioperative-antibiotic-prophylaxis-timing-selection)
* [Surgical Approaches to the Femur and Stifle](/knowledge/veterinary-medicine/veterinary-surgery/surgical-approaches-femur-stifle)
* [Fracture Healing Assessment: Radiographic and Clinical Evaluation](/knowledge/veterinary-medicine/veterinary-surgery/fracture-healing-assessment-radiographic-clinical)


## References and Further Reading

- [Computer-Assisted Surgery Using 3D Printed Saw Guides for Acute Correction of Antebrachial Angular Limb Deformities in Dogs.](https://pubmed.ncbi.nlm.nih.gov/30965369/). 2019.
- [Pain and Laboratory Animals: Publication Practices for Better Data Reproducibility and Better Animal Welfare.](https://pubmed.ncbi.nlm.nih.gov/27171143/). 2016.
- [3D geometric morphometrics in veterinary science: applications, standardization, and future directions.](https://pubmed.ncbi.nlm.nih.gov/41860003/). 2026.
- [Orthopedic applications of 3D printing in canine veterinary medicine.](https://pubmed.ncbi.nlm.nih.gov/40336818/). 2025.
- [Computed Tomographic Tenography of the Equine Carpal Flexor Tendon Sheath.](https://pubmed.ncbi.nlm.nih.gov/40059445/). 2025.
- [Path planning for fracture reduction robots incorporating physiological tissue response and safety-oriented optimization.](https://pubmed.ncbi.nlm.nih.gov/42012574/). 2026.
- [American College of Veterinary Surgeons Animal Health Resources](https://www.acvs.org/small-animal/). American College of Veterinary Surgeons.
- [MSD Veterinary Manual, Professional Edition](https://www.msdvetmanual.com/). MSD Veterinary Manual.
- [American Veterinary Medical Association Practice Resources](https://www.avma.org/resources-tools). American Veterinary Medical Association.

## Related Articles

- [Surgical Power Tools: Drills, Saws, and Burrs in Orthopedics](/knowledge/veterinary-medicine/veterinary-surgery/surgical-power-tools-drills-saws-and-burrs-in-orthopedics)
- [Surgical Complications: Recognition and Management](/knowledge/veterinary-medicine/veterinary-surgery/surgical-complications-recognition-management)
- [Surgical Drains: Indications and Maintenance](/knowledge/veterinary-medicine/veterinary-surgery/surgical-drains-indications-maintenance)
- [Surgical Lighting and Magnification: Selection and Use](/knowledge/veterinary-medicine/veterinary-surgery/surgical-lighting-and-magnification-selection-and-use)
- [Surgical Approaches to the Eye and Orbit](/knowledge/veterinary-medicine/veterinary-surgery/surgical-approaches-eye-orbit)

> This article is educational professional reference material for veterinary audiences. It is not a substitute for veterinary diagnosis, individual clinical judgment, current product labeling, or applicable regulatory requirements.