Experience of reverse medial arm flaps in the reconstruction of burned elbow scar contractures

Anatomy, surgical techniques, and clinical outcomes for the medial arm flap: A systematic review

BACKGROUND

The medial arm flap (MAF) has been used as a pedicle flap and free flap to reconstruct various deformities, including those of the head and neck, axilla, elbow, chest, and hand. This study reviews the anatomy of the flap, the technique of flap harvest, its clinical applications, and a systematic review of the current published literature.

METHODS

An online systematic review of MEDLINE, EMBASE, PubMed, and The Cochrane Library from inception to September 30, 2023, was completed. Studies that investigate the anatomy, technique or clinical outcomes of medial arm flaps were included. Clinical data extracted includes patient, defect, flap characteristics, complications, and take-back procedures. Anatomic data extracted includes anatomical variations, and vascular characteristics and patterns.

RESULTS

Between 1980 and 2023, 50 papers were published outlining the medial arm flap. Anatomic studies detail the anatomy of 384 medial arms, and outcomes are reported for 283 MAFs (75 free flaps and 208 pedicle flaps). The superior ulnar collateral artery is most commonly cited as the dominant arterial supply to the middle third of the medial arm. The majority of patients required reconstruction post-burn (39.2%), trauma (17.7%), and tumor excision (12.4%). MAFs were mostly used to reconstruct defects of the head and neck (41.7%), the hand and wrist (21.9%), and the elbow (16.3%). Eleven flaps (4.1%) suffered partial flap failure, and two flaps (0.7%) suffered total flap failure.

CONCLUSION

This manuscript demonstrates that the MAF is a reliable and underutilized flap option with a well-hidden donor scar and a low complication rate.

[Burn contractures of the extremities]

Burn contractures are common after deep burns of the limbs. When rehabilitation fails to restore joint function and normal range of motion, surgical contracture release should be performed. Different plastic surgery techniques can be used, from Z-plasty to skin grafts, artificial dermis and flaps. Surgery can also be used in case of esthetic concerns. Available surgical techniques and indications are presented.

Burn reconstruction: the problems, the techniques, and the applications

Many patients continue to experience problems long after burn wounds have closed. Contracture and deformity are frequent sequelae of the scar tissue that is formed secondary to thermal trauma. A variety of techniques are available to the burn reconstructive surgeon, ranging from simpler grafting methods to complex free-tissue transfers. In this article, the clinical applications of these procedures are discussed, with examples of management techniques for selected problems commonly encountered by the reconstructive surgeon.

The post-burn elbow medial flexion scar contracture treatment with trapeze-flap plasty

A medial flexion elbow contracture is characterized by the presence of a fold which has a semi-lunar shape, the sheets of which are scars. The shortage in skin length and the excess in width occurs in the sheets. To estimate the size and form of length deficiency in the fold is the section from the top of the fold to the rotation axis of the joint. As a rule, the wound receives a trapeze form. To convert the sheets of the fold into trapeze-shaped flaps, several radial cross-sections from the tops of the fold to joint rotation axis are used. The flaps are mobilized with the full fat layer, and then transposed toward one another causing tension, therefore, covering the wound on the flexion surface of the joint. Flaps and the adjacent skin, displaced forward from lateral and back surfaces of the joint, participate in wound coverage. Trapezoid flaps have a wide end, stable blood circulation; they do not undergo rotation, therefore, do not undergo necrosis. Contractures are eliminated in full without relapse. As a rule, in all 35 patients the functional outcome was perfect.

Management of postburn contractures of the upper extremity

Postburn contractures of the upper extremity are better prevented than treated, but many patients still suffer from this disability, especially after suboptimal primary care or major burns. Principles applicable to release of postburn contractures of the upper extremity are discussed, with a joint-specific review of relevant techniques to accomplish the release of the contracture. Pre- and postoperative care is discussed.

The propeller flap for postburn elbow contractures

Flexion contracture of the elbow is a common sequela of burn injury. Numerous methods have been suggested for release, including grafting, Z-plasty, Y-V flaps, local or distant fasciocutaneous flaps, muscle or myocutaneous flaps, free flaps, tissue expanders and non-surgical orthotics. In this article the authors present their experience with the propeller flap method in seven cases of elbow flexion contracture. Sufficient extension and an acceptable aesthetic outcome were obtained. Other benefits include easy design and rapid flap elevation that permits a single stage correction of the deformity without further sacrificing an artery or muscle. We think that the main disadvantage of the propeller flap is using the same skin that has suffered from the burn insult which has a poorer cosmetic result. Other than this and excluding deep burn injuries, we believe that the propeller flap is a useful alternative for elbow contracture release.

Free tissue transfer: an advanced strategy for postinfection soft-tissue defects in the upper extremity

Surgical treatment of severe, necrotizing infections frequently leave compound defects that require complex reconstructive procedures. In the upper extremity, local flap coverage is limited because of the size of the lesions. Regarding the results of early microsurgical coverage of complex postinfectious defects of the lower extremity, the goal of this study was to evaluate the role of free tissue transfer in the treatment of severe infections in the upper extremity. Between 1994 and 1999, 24 patients with major defects as a result of severe necrotizing infections in the upper extremity underwent free tissue transfer. Parameters assessed included the success of infection control, flap survival rate, salvage of the extremity, and an outcome analysis by the Disability of Arm-Shoulder-Hand score and a visual analog scale. Patient age ranged from 17 to 75 years (average age, 50.8 years). Previous treatment of 11 patients in outlying hospitals included 4.2 operative procedures and a delay of admission to the authors' unit of 89 days. The average defect size after debridement was 10.0 x 14.4 cm. Twenty-four free flaps including 16 muscle or musculocutaneous flaps, 4 chimeric flaps from the subscapular system, and 4 osteocutaneous flaps were performed for reconstruction. The overall flap survival was 95.8%. One temporalis fascia flap (TPF) was lost as a result of vascular thrombosis, and three flaps underwent successful revision of the anastomoses. Eight patients required further minor surgical treatment. The Disability of Arm-Shoulder-Hand score yielded an average of 41.5 points, which represents a moderate impairment of activities of daily living. Visual analog scale assessment demonstrated an overall high satisfaction (9.5 points; range, 1-10 points). The data demonstrate that even in severe necrotizing infections resulting in complex acute or chronic defects, limb salvage and infection control can be achieved successfully with radical debridement and early free tissue transfer.

Use of an adipofascial flap based on the proximal perforators of the ulnar artery to correct contracture of elbow burn scars: an anatomic and clinical approach

Different techniques can be used to repair contracture of burn scars on the elbow, including local or distant pedicle flaps, muscle or myocutaneous flaps, free flaps, and tissue expanders. Among these, a pedicled adipofascial flap based on the most proximal two to four perforators of the ulnar artery (located 1 to 5 cm from the origin of the artery) can be anastomosed to form a sort of axially patterned blood supply within the fascia and subcutaneous fat. Therefore, no major vessel in the forearm need ever be severed. In addition, use of this type of flap preserves muscle function. The pedicled adipofascial flap described in this article allows for early rehabilitation because the flap is thin and pliable. Additional advantages are the easy and quick dissection and completion of the procedure in one stage. A detailed anatomic dissection of the flap was performed on 16 upper extremities from fresh cadavers; an injection study was also performed to determine the location and dimensions of the pedicle flap and its area of reach around the elbow. In the past 3 years, 14 flaps were used in 13 patients to repair elbow defects after release of burn scar contractures. Flap dimensions ranged from 4 x 7 cm to 6 x 14 cm (mean flap size, 74 cm). The results were very satisfactory.