POSTRAUMATIC FREE FLAP RECONSTRUCTION ON EXTENSIVE TISSUE LOSS IN LOWER EXTREMITY

Abstract

Surgical treatment of complex wounds of the lower extremities has greatly evolved in the last years, leading to a higher percentage of limb salvage and good functional recovery.

Microsurgery surely is a good weapon when facing extensive tissue losses and infections.

From 1994 to 2004, 25 patients have been treated in our department for complex traumas of the lower limb.

These cases include 4 acute complex injuries with extensive soft tissue loss (Gustilo III open fractures) which were treated with 3 Latissimus Dorsi and 1 Gracilis Muscle Flaps; 10 delayed referrals with exposed bone or bony/soft tissue loss (1 Fibula Flap for the distal femur, 1 Fibula Flap for the lower leg, 3 cases of amputation stump coverage, 2 Parascapular Flaps, 2 Gracilis Flaps, 1 Latissimus Dorsi Flap, 1 Serratus Flap with a rib, 1 Iliac Crest Flap); and 11 late reconstructions of chronic osteomyelitis: 1 distal femur infection (Double-barrel Fibula Flap), 10 infections of the middle or distal third of the lower leg (3 Fibula Flaps, 4 Latissimus Dorsi Flaps, 3 Gracilis Muscle Flaps).

In the last few years, the approach to bony tissue losses has been changing: on one hand, elongation techniques for the lower extremity give good results; on the other, microsurgery may allow a single-stage reconstruction of bone, muscle and skin defects, leading to much shorter hospitalization time, and improvement of the patients’ quality of life because of a faster recovery.

Over 90% of the flaps survived, leading to a good recovery of the patients. The two failures were due to the necrosis of a Gracilis Flap in the coverage of an amputation stump and that of a Latissimus Dorsi Flap used for an extensive soft tissue loss in a leg which subsequently had to be amputated.

In 78.5% of the cases of osteomyelitis recovery was obtained after a single operation, and in only 12.3% of the cases the flaps had to be partially revised.

In 2 cases, after the bony resection and coverage by means of a Gracilis Muscle Flap, a homolateral fibular transfer with the Ilizarov technique was performed.

The length of bone resections treated by fibular flaps was 8–12 cm (mean 9).