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The American Journal of Sports Medicine 24:306-310 (1996)
© 1996 SAGE Publications

Long-Term Followup of the Untreated Isolated Posterior Cruciate Ligament-Deficient Knee

Melbourne D. Boynton, MD

Eastwood Orthopaedic Clinic, Auckland, New Zealand, Medical College of Wisconsin, Milwaukee, Wisconsin

Barry R. Tietjens, MB, CHB, FRACS

Eastwood Orthopaedic Clinic, Auckland, New Zealand

We evaluated 38 subjects with isolated posterior cru ciate ligament-deficient knees at a mean of 13.4 years (range, 5 to 38) after injury to study the occurrence of symptoms, disabilities, and articular degeneration. Each subject completed a standardized questionnaire, physical examination, and had radiographs taken of both knees. Eight (21%) patients had surgeries for meniscal injuries after their posterior cruciate ligament injuries. The mean questionnaire score for function (50-point maximum) was 34.4 ± 6.5 (SD) for the pa tients who did have meniscal surgeries versus 40.0 ± 8.7 for the 30 patients who did not (P = 0.05). Among the 30 patients with isolated posterior cruciate liga ment-deficient knees with normal menisci, 24 (81%) had at least occasional pain and 17 (56%) had at least occasional swelling. As time from injury increased, increased articular degeneration on radiographs was seen (P = 0.037). Our study suggests that the prog nosis for the isolated posterior cruciate ligament-defi cient knee varies. Some patients experience significant symptoms and articular deterioration, while others are essentially asymptomatic and maintain their usual knee function.




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