• H B Skinner and J E Scherger.
• Department of Orthopedic Surgery, College of Medicine, University of California, Irvine, USA. hskinner@uci.edu
• Postgrad Med. 1999 Dec 1;106(7):51-2, 55-6, 61-4 passim.

AbstractA likely identification of a given structural disorder of the hip or knee can be suggested by the patient's age. In the hip, developmental dysplasia is usually found in infants, Legg-Calvé-Perthes disease in children of 4 to 10 years, slipped capital femoral epiphysis in somewhat older children, osteonecrosis in young to middle-aged adults, and degenerative joint disease and hip fracture in older adults. In the knee, Blount's disease is usually found in children aged 3 to 8, patellofemoral disease during the teens and early 20s, meniscal tears from the early teens through the mid-50s, ligament injuries from the teens to the 40s, and osteoarthritis throughout adulthood. With relatively little additional information, a useful diagnosis can be made so appropriate therapy can be started or referral made.

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