Department of Orthopedics, China-Japan Friendship Hospital, China-Japan Friendship Institute of Clinical Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Graduate School of Peking Union Medical College, Beijing, 100029, China.
Department of Orthopedics, Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, China-Japan Friendship Hospital, Peking Union Medical College, Beijing, 100029, China.
J Orthop Surg Res. 2022 Nov 19;17(1):498. doi: 10.1186/s13018-022-03380-2.
To assess the geometrical risk factors for meniscal injuries. We hypothesized that the narrowness of the intercondylar notch and the smaller tibial spine could increase the risk of meniscal injuries.
We retrospectively studied two hundred and seven patients examined for knee magnetic resonance images. Two experienced orthopedists evaluated the severity of meniscal injuries. The notch width, bicondylar notch width, notch width index, condyle width of the femur, tibial spine height, and intercondylar angle were measured in magnetic resonance image slides by two blinded orthopedists.
A total of 112 patients with a meniscus injury and 95 patients were as healthy control in all two hundred and seven patients. The NWI (P = 0.027) in patients with meniscus injuries was significantly different from the control group. A 1 SD (0.04 mm) increase in NWI was associated with a 0.4-fold increase in the risk of meniscal injury. A 1 SD (0.04 mm) increase in NWI was associated with a 0.64-fold increase in the risk of grade 3 meniscal injury. Furthermore, NWI and medial spine height are decreased significantly in grade 2 (P < 0.05) meniscal injury than in other grades. The medial spine height was significantly decreased in the meniscal injury group (P = 0.025), and the decrease in medial spine height would increase the risk of meniscal injury (OR = 0.77) and grade 3 meniscal injury (OR = 0.8).
The stenosis of the femoral intercondylar notch and small medial tibial spine is risk factors of meniscal injury. The decreased NWI and the medial tibial spine height were also associated with the severity of the meniscal injury.
评估半月板损伤的几何风险因素。我们假设，髁间窝变窄和胫骨嵴较小会增加半月板损伤的风险。
我们回顾性研究了 207 例接受膝关节磁共振成像检查的患者。两位经验丰富的骨科医生评估了半月板损伤的严重程度。在磁共振图像幻灯片上，两位盲法骨科医生测量了切迹宽度、双髁切迹宽度、切迹宽度指数、股骨髁宽度、胫骨嵴高度和髁间角。
在 207 例患者中，共有 112 例患者半月板损伤，95 例患者作为健康对照组。半月板损伤患者的 NWI（P=0.027）与对照组有显著差异。NWI 增加 1 SD（0.04 毫米），半月板损伤的风险增加 0.4 倍。NWI 增加 1 SD（0.04 毫米），半月板损伤 3 级的风险增加 0.64 倍。此外，2 级半月板损伤患者的 NWI 和内侧胫骨嵴高度明显降低（P<0.05）。半月板损伤组的内侧胫骨嵴高度明显降低（P=0.025），内侧胫骨嵴高度降低会增加半月板损伤的风险（OR=0.77）和 3 级半月板损伤的风险（OR=0.8）。
股骨髁间窝狭窄和内侧胫骨嵴较小是半月板损伤的危险因素。NWI 降低和内侧胫骨嵴高度降低也与半月板损伤的严重程度有关。
