# Skin Flaps and Grafts in Reconstructive Surgery


## Key Takeaways

- Axial pattern flaps, unlike random pattern flaps, incorporate a direct cutaneous artery and vein, enabling single-stage transfer over greater distances without a delay procedure by relying on the named vessel's perfusion territory.
- Graft survival is critically dependent on recipient bed vascularity; avascular structures such as bone without periosteum, tendon without paratenon, or cartilage are unsuitable for graft take and necessitate flap coverage.
- Venous congestion is a more common complication than arterial insufficiency in axial pattern flaps, often presenting as a dark, swollen flap with rapid capillary refill, and may require interventions like suture removal or leech therapy.
- Patient systemic health significantly impacts reconstructive outcomes, with hypoproteinemia, diabetes mellitus, and hyperadrenocorticism impairing collagen synthesis and angiogenesis, necessitating correction prior to surgery.
- Postoperative monitoring for flaps and grafts should include color, temperature, capillary refill time, and pinprick bleeding, with earliest signs of venous congestion appearing within 12 to 24 hours, and arterial insufficiency presenting as pale, cool tissue.
- Common errors leading to flap or graft failure include inadequate wound bed preparation, excessive tension on the pedicle, kinking of the vascular supply, seroma/hematoma formation, and infection, all of which compromise revascularization.

---

This article provides a practical framework for selecting, planning, and executing skin flaps and grafts in dogs and cats. It serves the practicing veterinarian who manages traumatic wounds, post-resection defects, and chronic non-healing ulcers, and it answers the question of how to match a reconstructive technique to the vascular anatomy of a given wound bed. The content covers patient assessment, flap physiology, axial pattern flap options, graft biology, surgical technique, and postoperative monitoring, with emphasis on decision criteria that reduce the risk of necrosis and failure.

Reconstructive surgery in small animals has evolved from random pattern techniques toward a more precise understanding of cutaneous vascular territories. The identification of direct cutaneous arteries in the dog enabled the development of axial pattern flaps that can be raised in a single stage and transferred over considerable distances without a delay procedure [Pavletic's description of canine axial pattern flaps](https://pubmed.ncbi.nlm.nih.gov/7271004/). This anatomic foundation underpins most modern flap selection in veterinary practice. Grafting, by contrast, depends less on flap vascular supply and more on the recipient bed's capacity to support revascularization, a distinction that shapes every surgical decision in this field.

## At a Glance

| Parameter | Decision or Fact |
|---|---|
| Flap classification | Random pattern (subdermal plexus) versus axial pattern (direct cutaneous artery and vein) |
| Axial pattern flap candidates | Thoracodorsal, omocervical, deep circumflex iliac, caudal superficial epigastric, genicular, and others |
| Graft types | Full thickness versus split thickness, full thickness preferred in veterinary patients for durability |
| Recipient bed requirement | Viable vascularized tissue, avascular bone, tendon without paratenon, or cartilage will not support a graft |
| Delay phenomenon | Surgical division of selected vessels 10 to 14 days before transfer can add one additional vascular territory to flap length |
| Postoperative monitoring | Color, temperature, capillary refill time, and edge bleeding, earliest signs of venous congestion appear within 12 to 24 hours |
| Necrosis risk factors | Tension, kinking of the pedicle, seroma or hematoma formation, infection, and excessive patient motion |
| Adjunctive therapy | Stem cell therapy has shown significant reduction in flap necrosis in preclinical models, though clinical protocols remain investigational |

## Physiology of Skin Flap Survival

Skin flaps survive on their vascular pedicle until neovascularization from the wound bed establishes collateral inflow. The subdermal plexus supplies random pattern flaps, and its perfusion pressure declines with distance from the base. Axial pattern flaps incorporate a named direct cutaneous artery and vein, which perfuse a defined territory and allow the flap to extend beyond the random pattern limit. The length-to-width ratio that governs random flaps becomes less relevant when a direct cutaneous vessel is included, because the vessel, not the base width, determines perfusion.

The delay phenomenon exploits the vascular remodeling that occurs after partial surgical interruption of a flap's blood supply. When a flap is raised and then returned to its bed, choke vessels between adjacent vascular territories dilate over approximately 10 to 14 days, and valved veins become regurgitant. This process can add at least one additional anatomic vascular territory to the safe length of a flap [Taylor and colleagues' clinical applications of the delay phenomenon](https://pubmed.ncbi.nlm.nih.gov/1741464/). The delay procedure is most useful when a flap of borderline length is required or when the primary pedicle is of uncertain integrity.

### Venous Congestion and Arterial Insufficiency

Venous congestion is more common than arterial failure in axial pattern flaps. The direct cutaneous vein may kink or thrombose when the flap is rotated or tunneled, and the resulting venous hypertension drives arteriolar inflow down, producing progressive cyanosis and eventual necrosis. Arterial insufficiency presents as a pale, cool flap with sluggish capillary refill. Distinguishing the two is critical because the management differs: congestion may respond to suture removal, leeching, or medicinal leeches, whereas arterial failure usually requires pedicle revision or flap salvage.

## Patient Selection and Preoperative Planning

Systemic disease affects wound healing and flap survival. Hypoproteinemia, diabetes mellitus, hyperadrenocorticism, and chronic anemia impair collagen synthesis and angiogenesis. The American College of Veterinary Surgeons' specialist summaries emphasize that patient health status and the cause of the wound should be assessed before committing to a reconstructive procedure [ACVS animal health resources on surgical conditions](https://www.acvs.org/small-animal/). A contaminated wound with devitalized tissue should be debrided and managed open until a healthy granulation bed forms, which may take 3 to 5 days, before flap or graft transfer.

Wound location dictates technique. The thorax, lateral abdomen, and proximal limbs offer robust axial pattern options, whereas the distal limb and paw present a paucity of local flap tissue and often require grafts or cross-limb techniques. The surgeon must also consider the patient's conformation, coat type, and anticipated activity level. A heavy, pendulous abdomen may preclude a caudal superficial epigastric flap in a deep-chested dog, and an active working dog may disrupt a graft site more readily than a sedentary companion animal.

### Wound Bed Preparation

A successful graft or flap requires a recipient bed free of infection, necrosis, and foreign material. Debridement should remove all nonviable tissue, and lavage with sterile saline or dilute chlorhexidine reduces bacterial load. Cultures are indicated when infection is suspected or when the wound has been open for more than 72 hours. The MSD Veterinary Manual's professional edition notes that the presence of β-hemolytic streptococci or Pseudomonas species can compromise graft survival and should be addressed before reconstruction [MSD Veterinary Manual professional reference on wound management](https://www.msdvetmanual.com/).

## Flap Versus Graft Selection

The first decision in reconstructing a cutaneous defect is whether a flap or a graft is appropriate. Flaps carry their own blood supply and are indicated when the wound bed is avascular, contaminated, or exposed to bone, tendon, or implants. Grafts depend entirely on the recipient bed for revascularization and therefore require a healthy, well-vascularized granulating surface.

Choose a flap when any of the following apply: exposed bone without periosteum, exposed tendon without paratenon, exposed implants, prior radiation therapy, or a wound bed with marginal vascularity. Choose a graft when the bed is healthy granulation tissue and the defect is too large for primary closure or local flap advancement. Grafts are also preferred when donor site morbidity from a flap would be unacceptable.

| Factor | Flap | Graft |
|---|---|---|
| Blood supply | Intrinsic, independent of recipient bed | Extrinsic, dependent on recipient bed |
| Recipient bed requirement | None, can cover avascular structures | Healthy granulation tissue required |
| Contamination tolerance | Moderate, vascular supply aids clearance | Poor, infection causes graft failure |
| Donor site morbidity | Larger, requires primary closure | Smaller, heals by second intention |
| Survival timeline | Immediate perfusion | Revascularization over 3 to 7 days |
| Cosmetic match | Superior, same regional skin | Variable, depends on donor site |
| Procedure complexity | Higher, requires flap design and elevation | Lower, requires bed preparation and fixation |

Patient status changes the decision. A geriatric or debilitated patient may tolerate a shorter graft procedure better than a lengthy axial pattern flap elevation. Conversely, a graft on a mobile joint surface will shear and fail, making a flap the better choice despite longer operative time. In cats, distal limb skin is thinner and less mobile, so grafts are often preferred over local flaps in these regions.

## Axial Pattern Flap Technique

Axial pattern flaps incorporate a direct cutaneous artery and vein and can be raised in a single stage without a delay procedure. The omocervical, thoracodorsal, and deep circumflex iliac flaps were described in the dog with defined landmarks and guidelines for development, and they permit rapid restoration of extensive defects involving the face, pinna, neck, shoulder, forelimb, axilla, thorax, inguinal region, lateral thigh, and trochanteric area [Pavletic's description of canine axial pattern flaps](https://pubmed.ncbi.nlm.nih.gov/7271004/).

### Preoperative Identification

Use a Doppler ultrasound probe to identify the course of the direct cutaneous artery before incision. Mark the vascular pedicle and the planned flap boundaries. The flap length should not exceed the anatomic territory of the vessel plus one adjacent vascular territory. Attempting to capture more than this invites distal necrosis.

### Elevation Sequence

1. Incise the skin along the marked boundaries down to the subcutaneous fat.
2. Elevate the flap in the plane deep to the panniculus carnosus muscle where present, preserving the direct cutaneous vessels on the deep surface of the flap.
3. Identify and preserve the vascular pedicle as it enters the flap base.
4. Transpose the flap into the recipient bed without tension on the pedicle.
5. Suture the flap in place with interrupted or continuous intradermal sutures followed by skin sutures.
6. Close the donor site primarily if tension permits, otherwise with a local advancement flap or skin graft.

### Tension and Torsion

The pedicle must not be twisted, kinked, or compressed. Tension on the pedicle reduces arterial inflow and venous outflow. If the flap does not reach the defect without tension, extend the incision, mobilize the surrounding skin, or choose a different flap. A flap that requires tension to reach is a flap that will fail.

## Subdermal Plexus Flaps

Subdermal plexus flaps, also called random or local flaps, rely on the subdermal vascular plexus instead of a named direct cutaneous vessel. They are simpler to raise but have a limited length-to-width ratio. In dogs and cats, a length-to-width ratio of 3:1 is generally safe on the trunk, but this ratio is reduced to 2:1 or less on the distal limbs where the subdermal plexus is less developed.

### Advancement, Rotation, and Transposition

Advancement flaps move directly forward into the defect. They require undermining of the surrounding skin and often benefit from Burow's triangles at the base to distribute tension. Rotation flaps pivot around a fixed point and are useful for triangular defects. Transposition flaps move laterally into an adjacent defect and are the most versatile of the local flaps.

The delay phenomenon can extend the survival length of a subdermal plexus flap. Surgical delay involves raising the flap partially, then returning it to its bed for 10 to 14 days before final transfer. The delay causes dilation of choke arteries and makes anatomically unfavorable valved vein segments regurgitant, allowing at least one additional anatomic vascular territory to be added to the flap length safely [clinical applications of the delay phenomenon](https://pubmed.ncbi.nlm.nih.gov/1741464/). Delay is indicated when a flap of borderline length is required or when the vascular territory is uncertain.

## Full-Thickness Skin Grafting

Full-thickness grafts include the entire epidermis and dermis. They contract less than split-thickness grafts, provide better cosmetic and hair-bearing results, and are preferred in companion animals. Their disadvantage is a greater metabolic demand during revascularization, making them less tolerant of a marginal recipient bed.

### Graft Harvest and Preparation

Select a donor site with similar hair characteriztics and skin thickness to the recipient site. Common donor sites include the lateral thorax, lateral abdomen, and cervical region. Harvest the graft with a scalpel, taking care to include the full dermis but not the subcutaneous fat. Trim the graft of all subcutaneous tissue, as residual fat interposes between the graft and the recipient bed and prevents revascularization.

### Graft Fixation

The graft must be immobile during the revascularization period. Use a combination of sutures and a tie-over bandage. A bolster dressing applies even pressure across the graft, prevents seroma and hematoma formation, and immobilises the graft against the bed. Leave the bolster in place for 3 to 5 days, then inspect the graft.

### Meshing

Meshing the graft with a scalpel blade or a meshing device creates perforations that allow drainage of serum and blood from beneath the graft. Meshing also allows the graft to expand, covering a larger area than the donor site. In veterinary patients, meshing is used when the recipient bed is exudative or when graft expansion is needed. The trade-off is a less cosmetic result with a cobblestone appearance.

## Postoperative Monitoring and Complication Management

Monitor flaps and grafts at least twice daily for the first 72 hours. Assess color, temperature, capillary refill time, and turgor. A normal flap is pink, warm, and has a capillary refill time of less than 2 seconds. Arterial insufficiency produces a pale, cool flap with a slow capillary refill time. Venous congestion produces a dark, purple flap with a rapid capillary refill time and increased turgor.

| Parameter | Normal | Arterial Insufficiency | Venous Congestion |
|---|---|---|---|
| Color | Pink | Pale, white | Dark red to purple |
| Temperature | Warm | Cool | Warm to cool |
| Capillary refill | < 2 seconds | > 2 seconds | < 1 second |
| Turgor | Supple | Flat, collapsed | Tense, swollen |
| Pinprick bleeding | Immediate, bright red | Absent or delayed | Immediate, dark blood |

Pinprick testing with a 25-gauge needle can confirm perfusion. Bright red bleeding indicates arterial inflow. Dark, slow bleeding indicates venous congestion. No bleeding indicates arterial occlusion or thrombosis.

### Failure Modes

Arterial insufficiency is usually caused by tension on the pedicle, torsion, or thrombosis. Venous congestion is more common than arterial insufficiency and is often caused by inadequate venous drainage, hematoma, or excessive flap thickness. Infection causes graft failure by lysing the fibrin seal between graft and bed. Seroma and hematoma elevate the graft from the bed and prevent revascularization.

### Salvage Options

If a flap or graft shows signs of failure, address the cause immediately. Remove any constricting sutures or bandages. Drain hematomas or seromas. If venous congestion persists, consider leech therapy or medicinal leeches where available. If arterial thrombosis is suspected, surgical exploration and anastomotic revision may be required, though this is rarely successful after 6 hours of ischemia.

Stem cell therapy has been investigated as a method to reduce distal necrosis of skin flaps. A systematic review and meta-analysis of 20 animal studies found significant effects of stem cell treatment on reducing flap necrosis compared with controls, though the evidence base is limited to experimental models and clinical translation remains uncertain [preclinical efficacy of stem cell therapy for skin flap](https://pubmed.ncbi.nlm.nih.gov/33413598/). At present, stem cell therapy should be considered experimental and not a substitute for sound surgical technique.

### Documentation

Record the flap or graft type, dimensions, vascular pedicle identification, and intraoperative complications. Document postoperative monitoring findings at each assessment, including color, temperature, capillary refill time, and any interventions performed. Photograph the reconstruction at surgery, at first bandage change, and at suture removal. This documentation supports clinical decision-making if complications arise and provides a record for client communication.

## Recognized Complications and Early Detection

Flap and graft failure follows predictable patterns. Arterial insufficiency produces a pale, cool flap with reduced capillary refill time and absent bleeding on needle prick. Venous congestion produces a swollen, purple flap with rapid refill and dark blood on prick. Both progress to necrosis if uncorrected. Serial assessment every 8 to 12 hours for the first 72 hours remains the standard. Use a consistent scoring system: color, temperature, capillary refill, turgor, and bleeding character. Photograph each assessment to document trends instead of isolated findings.

Infection presents with erythema at the suture line, purulent discharge, odour, or dehiscence. Seroma and hematoma elevate the flap from its bed and interrupt revascularisation. Detect these by palpation and ultrasound if needed. Graft take failure appears as non-adherent, discoloured, or macerated tissue at the first bandage change, typically 3 to 5 days postoperatively.

## Common Errors and Corrective Action

The most frequent error is inadequate wound bed preparation. A graft or flap placed on exposed bone, tendon without paratenon, or heavily contaminated tissue will fail regardless of technique. Correct this by delaying reconstruction until a healthy granulation bed exists, or by selecting a flap with an independent blood supply that can survive on a marginal bed.

Excessive tension is the second most common error. Tension compromises capillary perfusion and causes wound dehiscence. Test flap mobility before committing sutures. If the flap edge retracts more than a few millimetres, extend the incision, add a releasing incision, or convert to a graft. Torsion of an axial pattern flap pedicle kinks the vein and produces congestion. Verify pedicle orientation before closure and again after the first suture is placed.

Undermining too aggressively damages the subdermal plexus and converts a well-perfused flap into a random pattern flap with a shorter survival length. Preserve the deep fascia where possible. Overly tight bandaging produces the same clinical picture as venous congestion. Bandage pressure should be checked daily, and the limb distal to the bandage should be examined for swelling.

In grafts, the common errors are inadequate meshing, failure to immobilise the graft bed, and premature bandage changes. A full-thickness graft without meshing accumulates fluid and lifts off the bed. Shear forces disrupt the fragile vascular anastomoses that form in the first 48 to 72 hours. Leave the primary bandage undisturbed for the recommended interval unless signs of infection or excessive moisture appear.

## Limitations of Current Evidence

The evidence base for many reconstructive decisions rests on expert opinion and case series instead of controlled trials. The delay phenomenon, for example, is well described anatomically and clinically, with at least one additional vascular territory added safely after surgical delay, but the optimal delay interval and the precise indications remain debated. Similarly, the original descriptions of axial pattern flaps in dogs established reliable landmarks for the omocervical, thoracodorsal, and deep circumflex iliac arteries, yet comparative studies of flap choice for specific defect locations are lacking.

Stem cell therapy for improving flap survival has shown significant effects in meta-analysis of animal studies, but translation to clinical practice in dogs and cats remains experimental [Li Y, Jiang QL, Van der Merwe L, Lou DH, Lin C, Preclinical efficacy of stem cell therapy for skin flap: a systematic review and meta-analysis](https://pubmed.ncbi.nlm.nih.gov/33413598/). Decellularised bioscaffolds represent another emerging option for skin replacement, but their role relative to autologous grafts is not yet defined [Cui H, Chai Y, Yu Y, Progress in developing decellularized bioscaffolds for enhancing skin construction](https://pubmed.ncbi.nlm.nih.gov/30942934/). Expert opinion still differs on whether to delay reconstruction in contaminated wounds, on the value of negative pressure wound therapy before grafting, and on the optimal timing of graft inspection.

## Referral and Escalation

Refer early instead of late. Circumstances that warrant referral to a surgical specialist include defects involving more than one aesthetic or functional unit, wounds requiring axial pattern flaps beyond the surgeon's experience, recurrent failure of primary reconstruction, and cases where limb salvage is in question. The American College of Veterinary Surgeons provides specialist summaries of surgical conditions and expected outcomes that can guide the decision to refer [ACVS animal health resources](https://www.acvs.org/small-animal/).

Laboratory involvement is indicated when wound healing is unexpectedly poor. Consider culture and sensitivity, histopathology of non-healing tissue, and screening for endocrine or nutritional disease. The MSD Veterinary Manual offers species-specific guidance on conditions that impair healing [MSD Veterinary Manual professional edition](https://www.msdvetmanual.com/).

Regulatory reporting is rarely required for routine reconstructive surgery. Reportable events include suspected adverse reactions to drugs or devices used perioperatively, and any notifiable infectious disease identified during wound management. The World Organization for Animal Health maintains current terrestrial animal health standards that define reportable conditions [WOAH terrestrial animal health code](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/). The American Veterinary Medical Association provides practice resources on professional obligations and adverse event reporting [AVMA practice resources](https://www.avma.org/resources-tools).

## Troubleshooting Guide

| Observation | Likely Cause | Discriminating Check |
|---|---|---|
| Pale, cool flap, slow refill | Arterial insufficiency | Needle prick: no or scant bright blood, check pedicle for torsion or tension |
| Purple, swollen flap, rapid refill | Venous congestion | Needle prick: dark blood, check bandage pressure and pedicle vein |
| Localized dark patch at flap tip | Distal necrosis | Demarcation line develops over 48 to 72 hours, await separation before debridement |
| Suture line erythema and discharge | Infection | Culture and sensitivity, examine wound bed for purulent material |
| Flap elevated from bed, fluctuant | Seroma or hematoma | Ultrasound or aspiration, evacuate and address source |
| Graft non-adherent at first change | Shear or fluid accumulation | Assess graft bed, reapply bolster if viable, otherwise debride |
| Progressive graft discolouration | Graft failure | Full-thickness necrosis requires excision and re-grafting after bed preparation |

## Frequently Asked Questions

### How do I decide between a flap and a graft when the wound bed is marginal?

When the wound bed has questionable viability, exposed bone without periosteum, or active infection, a graft will not survive because it requires a healthy vascularised bed for plasmatic imbibition and inosculation. A flap, particularly an axial pattern flap, brings its own blood supply and can survive over less ideal beds. If the defect is too large for a local flap and the bed is poor, consider staged reconstruction: first establish a healthy granulation bed, then graft. The [American College of Veterinary Surgeons resources](https://www.acvs.org/small-animal/) emphasize that wound bed quality, not defect size alone, should drive this decision.

### What can I do when I lack the instruments or experience for a free graft?

A full-thickness graft requires only a scalpel, thumb forceps, and suture or staples. If you cannot harvest a precise, uniformly thin graft, a pedicle flap is often safer because it avoids the technical demands of graft preparation. When neither is feasible, options include allowing healing by second intention with regular dressing changes, or using a decellularised bioscaffold as a temporary or permanent cover. [Decellularized bioscaffolds for skin construction](https://pubmed.ncbi.nlm.nih.gov/30942934/) have been applied in animal models and clinical practice, though their role in routine small animal wound management remains limited. Refer early if the defect exceeds your comfort level.

### How does the approach differ in cats compared with dogs?

Cats have thinner, more mobile skin with a less robust subdermal plexus, making random pattern flaps less reliable. Axial pattern flaps are correspondingly more valuable in cats, but the same named vessels are used with more conservative length-to-width ratios. Cats also appear more prone to postoperative self-trauma and distal flap necrosis. Graft take is comparable when the bed is healthy, but immobilisation is harder to achieve in cats. The [MSD Veterinary Manual](https://www.msdvetmanual.com/) notes species differences in wound healing and emphasizes that feline skin is more fragile, so handle all flaps and grafts with greater care and use finer suture material.

### What should I document in the medical record for a reconstructive procedure?

Record the defect dimensions, location, and wound bed grade before reconstruction. Document the flap or graft type, the specific pedicle or donor site, orientation, and the method of fixation. Note intraoperative findings such as tension, torsion, or color changes. Postoperatively, record daily assessments of color, temperature, capillary refill time, and any interventions. Photographs are strongly recommended. This documentation supports both clinical decision-making and medicolegal defense. The [AVMA practice resources](https://www.avma.org/resources-tools) advise that contemporaneous, objective records are essential for continuity of care and for justifying the choice of procedure if complications arise.

### How do I explain the risk of failure to an owner before surgery?

Use concrete numbers and a clear timeline. Explain that distal flap necrosis occurs in a meaningful percentage of cases despite correct technique, and that a second surgery may be required. Describe the signs of failure the owner may see, such as darkening or coolness of the flap edge, and the planned response. Emphasize that reconstruction is staged, not a single event. The [ACVS animal health resources](https://www.acvs.org/small-animal/) provide owner-facing summaries that describe expected outcomes and postoperative care, and these can be printed or referenced during the consultation. Avoid guarantees and frame the goal as functional coverage instead of cosmetic perfection.

### When should I consider a delay procedure in clinical practice?

A surgical delay is indicated when a flap must exceed the safe length of its vascular territory, or when the patient has compromised perfusion from prior trauma or scarring. The delay phenomenon reliably adds at least one additional vascular territory to a flap, as demonstrated in clinical applications of the technique. However, it requires two surgeries separated by 10 to 14 days, so it is only practical when the wound can be managed with dressings in the interim. In emergency reconstruction, a delay is rarely feasible, and an axial pattern flap is the better choice because it does not require a delay procedure to achieve considerable dimensions.

## 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

- [Preclinical efficacy of stem cell therapy for skin flap: a systematic review and meta-analysis.](https://pubmed.ncbi.nlm.nih.gov/33413598/). 2021.
- [The role of afferent lymphatics in the rejection of skin homografts.](https://pubmed.ncbi.nlm.nih.gov/4873840/). 1968.
- [An anatomic review of the delay phenomenon: II. Clinical applications.](https://pubmed.ncbi.nlm.nih.gov/1741464/). 1992.
- [Canine axial pattern flaps, using the omocervical, thoracodorsal, and deep circumflex iliac direct cutaneous arteries.](https://pubmed.ncbi.nlm.nih.gov/7271004/). 1981.
- [Progress in developing decellularized bioscaffolds for enhancing skin construction.](https://pubmed.ncbi.nlm.nih.gov/30942934/). 2019.
- [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.
- [WOAH Terrestrial Animal Health Code](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/). WOAH.

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> 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.