الفهرس 
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Abstract
In this thesis, a review of the etiology and management of soft-tissue defects of the lower extremities was done. In addition, twenty-five patients with defects in the lower limbs were managed by different reconstructive techniques. Split-thickness skin graft, which is a simple procedure, can only be applied on a suitable vascularized recipient site. Local flaps that were used to manage small to moderate-sized defects include, the sliding transposition fasciocutaneous flap, which was used in one patient. It survived completely and produced stable bone coverage. Local adipofascial flap was also used in three patients. In two of them, the flap completely survived and in the third, flap-tip necrosis had occurred. It is a thin flap that produced a good-contour coverage. Local muscle and musculocutaneous flaps as medial gastrocnemius muscle and musculocutaneous flaps were used for treatment of two defects. They survived completely and the final results were stable coverage in the two patients. Medial hemisoleus muscle was also used as a proximally-based flap in one patient (survived completely) and as a distally-based flap in another patient (in which flap-tip necrosis had occurred), but, the final results was stable-bone covering in both cases. As regards free flaps, free muscle and musculocutaneous flaps especially, latissimus dorsi are the most commonly used for lower-limb resurfacing. It is highly reliable flap and was used to cover defects of variable dimensions. It was used in seven cases and survived completely. These flaps produced stable coverage with good contour in cases of muscle flaps (3 cases) and in two musculocutaneous flaps, while in the remaining two musculocutaneous flaps, bulkiness was present.