Teitz C C, Lind B K, Sacks B M
Department of Orthopaedics, University of Washington, Seattle 98195-4060, USA.
Am J Sports Med. 1997 Sep-Oct;25(5):687-90. doi: 10.1177/036354659702500517.
A small femoral notch width index has been reported as a predictive factor for anterior cruciate ligament injury and implicated in the higher incidence of anterior cruciate ligament injuries in female athletes. Notch-plasty has been recommended for the unaffected knees of patients who have torn one anterior cruciate ligament and whose notch width index falls one standard deviation below "normal". However, the symmetry of the notch width index has not been specifically studied. We compared the notch width index in both knees of 40 male and 40 female patients. Half of the patients in each group had anterior cruciate ligament injuries, all from a noncontact mechanism. We found that the notch width indexes of the right and left knees of the same patient are essentially symmetrical, regardless of sex or anterior cruciate ligament status. Although the female patients tended to have smaller notch width indexes than the male patients, the difference was not statistically significant. Moreover, the ranges of notch width indexes in male and female patients overlapped considerably. Finally, there was no difference in notch width index between patients with and without anterior cruciate ligament tears. These findings suggest that the notch width index alone is not the critical etiologic factor in the patient with a unilateral anterior cruciate ligament tear. Furthermore, the increased incidence of anterior cruciate ligament tears in female patients compared with male patients in the same sports cannot be attributed to notch width index alone.
据报道，较小的股骨髁间窝宽度指数是前交叉韧带损伤的一个预测因素，并且与女性运动员中较高的前交叉韧带损伤发生率有关。对于一侧前交叉韧带撕裂且髁间窝宽度指数低于“正常”一个标准差的患者，建议对其未受伤的膝关节进行髁间窝成形术。然而，髁间窝宽度指数的对称性尚未得到专门研究。我们比较了40例男性和40例女性患者双膝关节的髁间窝宽度指数。每组中有一半患者患有前交叉韧带损伤，均为非接触机制所致。我们发现，同一患者左右膝关节的髁间窝宽度指数基本对称，无论性别或前交叉韧带状态如何。虽然女性患者的髁间窝宽度指数往往比男性患者小，但差异无统计学意义。此外，男性和女性患者的髁间窝宽度指数范围有相当大的重叠。最后，有或无前交叉韧带撕裂的患者之间髁间窝宽度指数没有差异。这些发现表明，对于单侧前交叉韧带撕裂的患者，仅髁间窝宽度指数并非关键的病因因素。此外，在相同运动项目中，女性患者与男性患者相比，前交叉韧带撕裂发生率的增加不能仅归因于髁间窝宽度指数。
