Reverse-flow anterolateral thigh perforator: an ad hoc flap for severe post-burn knee contracture.
2016
We evaluate function outcomes of the reverse-flow ALT perforator flap to reconstruct severe post-burn knee contracture. Between October 2012 and December 2014, 10 patients with severe post-burn knee contracture were subjected to reconstruction with 10 ipsilateral reversed-flow ALT perforator flaps. All the patients were male. Ages ranged from 15 to 47 years (mean = 32 years). Time from burn injury to patient presentation ranged from 2-8 months. All patients demonstrated post-burn flexion contracture of the knee joint, ranging from 35 to 75 degrees. Flap sizes ranged from 8×16 to 12×26 cm. The flaps and skin grafts were carried out without major complications. Only minor complications occurred, such as transient, mild congestion immediately after inset in two flaps. Two flaps developed superficial necrosis at the distal edge. One case sustained partial skin graft loss due to haematoma. One case complained of skin hyperpigmentation and hypertrophic scars around the graft. Secondary debulking procedures were required in two cases. The entire donor sites were closed by partial thickness skin graft with acceptable appearance, except one case that was closed primarily. Eight out of ten patients (80%) demonstrated gradual improvement in range of knee motion after a specialized rehabilitation program. Two patients (20%) did not get back full range of motion. RALT perforator flap is the cornerstone for the reconstruction of soft-tissue defects around the knee with acceptable aesthetic and functional results provided that the following items are fulfilled: inclusion of muscle cuff around the pedicle, the pivot point, prevention of pedicle compression after transfer and early surgical intervention on the post-burn knee contracture.
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