Geissler W B, Whipple T L
Department of Orthopaedic Surgery, University of Mississippi Medical Center, Jackson 39216.
Am J Sports Med. 1993 Nov-Dec;21(6):846-9. doi: 10.1177/036354659302100615.
The effect of an isolated injury of the posterior cruciate ligament on the articular cartilage and menisci has not been extensively studied. Intraarticular abnormalities in 88 arthroscopically proven posterior cruciate ligament tears in symptomatic patients with straight unidirectional posterior instability were reviewed. There were 33 patients with acute injuries (range, 3 to 21 days; mean, 14) and 55 patients with chronic tears (range, 28 to 3650 days; mean, 786). Of the acute injuries, chondral defects occurred in 4 patients (12%) and meniscal tears in 9 patients (27%; 6 lateral and 3 medial). Chondral defects of both the lateral femoral condyles and patella were present in all 4 patients. Of the chronic injuries, chondral defects occurred in 27 (49%) and meniscal tears in 20 patients (36%) (7 lateral and 17 medial). Chondral defects of the medial femoral condyle were most common. The mechanism of injury resulting in an isolated injury of the posterior cruciate ligament is most likely to affect the lateral compartment or the articular cartilage of the patella. The incidence of articular defects and the incidence of meniscal tears increased in patients with chronic posterior cruciate ligament injuries; both lesions increased most in the medial compartment.
后交叉韧带孤立损伤对关节软骨和半月板的影响尚未得到广泛研究。回顾了88例经关节镜证实为后交叉韧带撕裂且有症状的单向后向不稳定患者的关节内异常情况。其中33例为急性损伤（病程3至21天，平均14天），55例为慢性撕裂（病程28至3650天，平均786天）。在急性损伤患者中，4例（12%）出现软骨损伤，9例（27%）出现半月板撕裂（外侧6例，内侧3例）。4例患者均存在外侧股骨髁和髌骨软骨损伤。在慢性损伤患者中，27例（49%）出现软骨损伤，20例（36%）出现半月板撕裂（外侧7例，内侧17例）。内侧股骨髁软骨损伤最为常见。导致后交叉韧带孤立损伤的损伤机制最有可能影响外侧间室或髌骨的关节软骨。慢性后交叉韧带损伤患者的关节缺损发生率和半月板撕裂发生率增加；两种损伤在内侧间室增加最为明显。
