Abstract
The purpose of this article is to evaluate the incidence of posterior cruciate ligament (PCL) injuries in trauma patients with acute hemarthrosis of the knee. Sixty-one acute knee injuries underwent examination under anesthesia and diagnostic arthroscopy at a tertiary care trauma center over an 11-month period. PCL injuries occurred in 44% (27 of 61) acute knee injuries; 81.5% (22 of 27) were trauma patients and 18.5% (five of 27) were sports related. Higher energy mechanisms of injury may account for the difference. Isolated PCL injuries were rare [7.5% (two of 27)], whereas 92.5% (25 of 27) of PCL injuries occurred in combination with other ligament injuries. Trauma patients have a higher incidence of PCL injuries than does the athletic population. Acute knee hemarthrosis in trauma patients should elevate suspicion for PCL injuries. Arthroscopy is a valuable tool for PCL evaluation and surgical planning.
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