McDermott M, Freyne P
Br J Sports Med. 1983 Jun;17(2):84-7. doi: 10.1136/bjsm.17.2.84.
A clinical and radiological study of the knee joints of twenty middle and long distance runners, complaining of knee pain, was carried out. Osteoarthrosis of varying degree was found in six of the runners. A torn meniscus requiring surgery was found in one athlete, and another had considerable ligamentous laxity - both of these conditions predispose to the development of degenerative changes. Degenerative changes were significantly associated with the presence of genu varum (p less than 0.01) and history of severe injury (p less than 0.05). The number of years spent training was significantly greater in the affected group than in the unaffected group (p less than 0.05).
对20名抱怨膝关节疼痛的中长跑运动员的膝关节进行了临床和放射学研究。在6名运动员中发现了不同程度的骨关节炎。1名运动员发现半月板撕裂需要手术，另1名运动员有明显的韧带松弛——这两种情况都易引发退行性改变。退行性改变与膝内翻的存在（p<0.01）和严重损伤史（p<0.05）显著相关。受影响组的训练年限明显长于未受影响组（p<0.05）。
