Klippel-Trenaunay syndrome: orthopaedic considerations.

Klippel-Trenaunay syndrome is a rare congenital malformation characterized by a large angiomatous nevus, hypertrophy of soft tissue and/or overgrowth of bone, and venous varicosities. Orthopaedic surgeons are often consulted about limb hypertrophy and associated leg-length inequality, associated finger and toe anomalies, or a myriad of associated rare skeletal abnormalities. Orthopaedists must be aware of the intricacies of this syndrome and of its proper evaluation and treatment. The diagnosis, classification, etiology, and treatment of Klippel-Trenaunay syndrome are summarized in this review.