Vaes P H, Duquet W, Casteleyn P P, Handelberg F, Opdecam P
Physical Therapy Department, Academic Hospital, Brussels, Belgium.
Am J Sports Med. 1998 Sep-Oct;26(5):692-702. doi: 10.1177/03635465980260051601.
Patients suffering from functional ankle instability were selected based on a structured interview. Talar tilt was measured using supine ankle stress roentgenographs and standing talar tilt was measured using erect ankle stress roentgenographs. A digital roentgenocinematographic analysis of a 50 degrees ankle sprain simulation was performed to measure dynamic talar tilt and inversion distance between two video images (inversion speed). A significant decrease in pathologic supine talar tilt in unstable ankles was found in the braced compared with the nonbraced situation (talar tilt = 13.1 degrees versus 4.8 degrees with brace). The talar tilt with the brace after activity was still significantly lower than the initial value without the brace. The standing talar tilt of unstable ankles was shown to be significantly lower with the orthosis than without (standing talar tilt = 16.6 degrees versus 12.0 degrees with brace). Roentgenocinematographic evaluation of ankle sprain simulation showed that the mean dynamic talar tilt during simulated sprain decreased significantly in the braced ankles compared with the nonbraced ankles (dynamic talar tilt = 9.8 degrees versus 6.4 degrees braced). A significant decrease in the digital measurement of inversion distance (from 110.6 pixels to 92.4 pixels) was observed in the total sample of 39 ankles during the initial high-speed phase of the simulated sprain. The brace significantly slows down the inversion speed.
根据结构化访谈选择患有功能性踝关节不稳的患者。仰卧位踝关节应力X线片测量距骨倾斜度，直立位踝关节应力X线片测量站立位距骨倾斜度。对50度踝关节扭伤模拟进行数字X线电影分析，以测量两个视频图像之间的动态距骨倾斜度和内翻距离（内翻速度）。与未佩戴支具的情况相比，佩戴支具的不稳定踝关节病理性仰卧位距骨倾斜度显著降低（佩戴支具时距骨倾斜度为13.1度，未佩戴支具时为4.8度）。活动后佩戴支具时的距骨倾斜度仍显著低于未佩戴支具时的初始值。结果显示，佩戴矫形器时不稳定踝关节的站立位距骨倾斜度显著低于未佩戴时（佩戴支具时站立位距骨倾斜度为16.6度，未佩戴支具时为12.0度）。踝关节扭伤模拟的X线电影评估显示，与未佩戴支具的踝关节相比，佩戴支具的踝关节在模拟扭伤期间的平均动态距骨倾斜度显著降低（佩戴支具时动态距骨倾斜度为9.8度，未佩戴支具时为6.4度）。在模拟扭伤的初始高速阶段，39个踝关节的总样本中观察到内翻距离的数字测量值显著降低（从110.6像素降至92.4像素）。支具显著减慢了内翻速度。
