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目的 :测定中国健康青年踝关节距骨斜角正常值范围 ,从影像学方面提供急性外踝韧带损伤导致外踝不稳的定量诊断方法。方法 :随机选择无外踝韧带损伤史的健康青年学生 2 2 4人(男 1 1 8人 ,女 1 0 6人 ) ,年龄 2 0～2 3岁 ,共计 445例踝关节。在髋、膝屈曲 90°、踝跖屈 3 0°位 ,采用踝关节加压内翻拍片架拍踝跖屈内翻应力正位X线片。结果 :445例踝关节中 ,距骨斜角最小 0°,最大 1 1°,男性踝关节 2 3 5例距骨斜角 x±s为 3 99°± 1 91°,M±Q为 4°± 2°,P95为 7°;女性踝关节2 1 0例距骨斜角 x±s为 4 3 9°± 2 2 3°,M±Q为 4°±3°,P95为 8°。结论 :中国健康青年踝关节距骨斜角正常值范围为 0°～8°,急性外踝韧带损伤患者距骨斜角 >4°而≤ 8°时 ,结合临床严重的体征可考虑韧带断裂 ,距骨斜角 >8°时 ,可认为至少有一条外踝韧带断裂
OBJECTIVE: To determine the normal range of ankle talar angle in healthy young Chinese and to provide a quantitative diagnostic method for the instability of the lateral malleolus from the imaging aspects of acute injury of the lateral malleolus ligament. Methods: A total of 224 healthy young students (male 118 and female 106) with a history of injury without external ankle ligament were selected randomly and were aged from 20 to 23 years old, totaling 445 ankle joints. In hip, knee flexion 90 °, ankle plantar flexion 3 0 ° position, using ankle compression varus film rack ankle plantar flexor pronation stress an anteroposterior X-ray. Results: Among 445 ankle joints, the talar angle of the talus was the smallest 0 ° and the largest was 11 °. The male talus oblique angle x ± s was 2399 ° ± 911 ° and the M ± Q was 4 ° ± 2 °, P95 was 7 °; the ankle of 210 female talus oblique angle x ± s was 439 ° ± 223 °, M ± Q was 4 ° ± 3 °, P95 was 8 °. Conclusion: The normal range of ankle talar angle is 0 ° ~ 8 ° in healthy young Chinese and the angle of talus> 4 ° and ≤ 8 ° in patients with acute lateral malleolus ligament injury. Combined with clinically significant signs, the rupture of ligaments, > 8 °, it can be considered that at least one of the lateral malleolar ligament rupture