Composite forearm free fillet flaps to preserve stump length following traumatic amputations of the upper extremity.
ABSTRACT Replantation of traumatic upper arm amputations are usually contraindicated due to patient age, comorbid diseases, ischemia time, and/or avulsion of proximal structures. Stable soft tissue coverage preserving proximal stump length and critical joints is required to prevent loss of limb function and aid in prosthetic fitting and comfort. The use of free fillet flaps from the amputated limb is well documented for lower-extremity amputations but has only recently been reported for upper-arm amputations involving distal humeral or elbow wounds or following radical upper-arm tumor resections. Furthermore, these described free fillet flaps were fasciocutaneous rather than composite flaps. Composite free fillet flaps from the amputated upper arm utilizing the flexor muscles adjacent to the vascular pedicles is not well described or documented.
Eight upper-extremity, composite, free fillet flaps were performed to cover proximal humeral and shoulder defects secondary to upper-arm traumatic amputation from July 1995 to May 2005 on 7 males and 1 female. A retrospective chart review was completed, and information collected included the age of patient, gender, date of injury and surgery, amputation site, mechanism of injury, ischemia time, type of fillet flap, donor and recipient vessels, flap sensation, flap survival, and number of complications.
All upper-arm amputations were trauma related (100%) and secondary to industrial accidents (4), motor vehicle and motorcycle accidents (2), fall (1), and train (1). Patient age ranged from 16 to 62 years and polytrauma was noted in 50%. Procedures included 6 composite free fillet flaps and 2 radial forearm free fillet flaps, with 4 (50%) sensate. Sensory nerves included the medial (3) and lateral (2) antebrachial cutaneous nerves attached to median proximal nerve stumps. Ischemia time ranged from 280 to 630 minutes. All flaps survived and 2 (25%) complications occurred in 1 patient. Subjective and protective sensation was observed in each neurorrhaphy; however, no confirmatory tested was used.
Immediate soft tissue coverage using composite free fillet flaps from amputated limbs can be successful, with few complications, and preserves limb length while maximizing available tissue. Furthermore, including flexor muscle belly adjacent to the vascular pedicles provides additional coverage and a well-vascularized composite flap to aid in prosthetic fitting and comfort.
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ABSTRACT: Tissue of amputated or nonsalvageable limbs may be used for reconstruction of complex defects resulting from tumor and trauma. This is the "spare parts" concept. By definition, fillet flaps are axial-pattern flaps that can function as composite-tissue transfers. They can be used as pedicled or free flaps and are a beneficial reconstruction strategy for major defects, provided there is tissue available adjacent to these defects.From 1988 to 1999, 104 fillet flap procedures were performed on 94 patients (50 pedicled finger and toe fillets, 36 pedicled limb fillets, and 18 free microsurgical fillet flaps). Nineteen pedicled finger fillets were used for defects of the dorsum or volar aspect of the hand, and 14 digital defects and 11 defects of the forefoot were covered with pedicled fillets from adjacent toes and fingers. The average size of the defects was 23 cm2. Fourteen fingers were salvaged. Eleven ray amputations, two extended procedures for coverage of the hand, and nine forefoot amputations were prevented. In four cases, a partial or total necrosis of a fillet flap occurred (one patient with diabetic vascular disease, one with Dupuytren's contracture, and two with high-voltage electrical injuries).Thirty-six pedicled limb fillet flaps were used in 35 cases. In 12 cases, salvage of above-knee or below-knee amputated stumps was achieved with a plantar neurovascular island pedicled flap. In seven other cases, sacral, pelvic, groin, hip, abdominal wall, or lumbar defects were reconstructed with fillet-of-thigh or entire-limb fillet flaps. In five cases, defects of shoulder, head, neck, and thoracic wall were covered with upper-arm fillet flaps. In nine cases, defects of the forefoot were covered by adjacent dorsal or plantar fillet flaps. In two other cases, defects of the upper arm or the proximal forearm were reconstructed with a forearm fillet. The average size of these defects was 512 cm2. Thirteen major joints were salvaged, three stumps were lengthened, and nine foot or forefoot amputations were prevented. One partial flap necrosis occurred in a patient with a fillet-of-sole flap. In another case, wound infection required revision and above-knee amputation with removal of the flap.Nine free plantar fillet flaps were performed-five for coverage of amputation stumps and four for sacral pressure sores. Seven free forearm fillet flaps, one free flap of forearm and hand, and one forearm and distal upper-arm fillet flap were performed for defect coverage of the shoulder and neck area. The average size of these defects was 432 cm2. Four knee joints were salvaged and one above-knee stump was lengthened. No flap necrosis was observed. One patient died of acute respiratory distress syndrome 6 days after surgery. Major complications were predominantly encountered in small finger and toe fillet flaps. Overall complication rate, including wound dehiscence and secondary grafting, was 18 percent. This complication rate seems acceptable. Major complications such as flap loss, flap revision, or severe infection occurred in only 7.5 percent of cases. The majority of our cases resulted from severe trauma with infected and necrotic soft tissues, disseminated tumor disease, or ulcers in elderly, multimorbid patients. On the basis of these data, a classification was developed that facilitates multicenter comparison of procedures and their clinical success. Fillet flaps facilitate reconstruction in difficult and complex cases. The spare part concept should be integrated into each trauma algorithm to avoid additional donor-site morbidity and facilitate stump-length preservation or limb salvage.Plastic & Reconstructive Surgery 10/2001; 108(4):885-96. · 3.54 Impact Factor
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ABSTRACT: The authors present a case in which a free circumferential fasciocutaneous flap from the forearm and hand, after radical tumor resection and forequarter amputation, was used successfully to cover the large soft-tissue defect on the chest wall.Journal of Reconstructive Microsurgery 06/2001; 17(4):229-31. · 1.00 Impact Factor
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ABSTRACT: The use of non-replantable amputated parts for reconstruction of the stump is a well-established technique. The use of a free fillet flap of the hand and forearm for elbow preservation in massive trauma of the upper extremity is reported in two cases. These free flaps allowed for covering and preserving a functional elbow and a more useful stump.Journal of Reconstructive Microsurgery 08/2004; 20(5):363-6. · 1.00 Impact Factor