Vera Angelina M, Beauchman Naseem, McCulloch Patrick C, Gerrie Brayden J, Delgado Domenica A, Harris Joshua D
Houston Methodist Orthopedics & Sports Medicine, Houston, Texas, U.S.A.
Houston Methodist Orthopedics & Sports Medicine, Houston, Texas, U.S.A..
Arthroscopy. 2017 May;33(5):971-976. doi: 10.1016/j.arthro.2016.11.020. Epub 2017 Jan 11.
To determine if a difference exists in brake reaction time (BRT) before and after hip arthroscopy for femoroacetabular impingement (FAI) and labral tear compared with age- and gender-matched controls.
Consecutive adult subjects undergoing primary hip arthroscopy were eligible for this prospective investigation. Individuals with symptomatic FAI and labral tear that underwent hip arthroscopy with minimum 8 weeks follow-up were included. BRT was measured using the RT-2S reaction time tester a maximum of 6 weeks preoperatively and every 2 weeks postoperatively for 8 weeks. Sit-to-stand test (STST) was measured at each BRT testing session. An age- and gender-matched control group without hip or lower extremity symptoms were selected and completed both BRT and STST. Continuous pre- and postoperative BRT values were compared with Mann-Whitney and analyses of variance. Association of BRT and STST tests was performed with Spearman correlation. An a priori sample size calculation determined that minimally 18 subjects per group (surgery group vs control group) were necessary to detect, with 80% power (difference of 0.2 seconds in BRT).
Nineteen subjects (age 37.1 ± 12.7 years, 10 women, 11 right hip) were analyzed. All subjects underwent arthroscopic labral repair and FAI correction. There was no difference between preoperative (604 ± 148 milliseconds [ms]) and postoperative (608 ms 2 weeks; 566 ms 4 weeks; 559 ms 6 weeks; 595 ms 8 weeks) BRT. There was no difference between controls and subjects at any time point. There was a strong negative correlation between BRT and STST preoperatively and at 4 and 6 weeks postoperatively and a moderate negative correlation at 2 weeks postoperatively.
After hip arthroscopy for FAI and labral tear, BRT is not different from preoperative values or that of controls. In addition, BRT had a significant correlation with STST in the first 6 weeks after surgery.
Level II, diagnostic, prospective.
确定与年龄和性别匹配的对照组相比，股骨髋臼撞击症（FAI）和髋臼唇盂缘撕裂患者在髋关节镜检查前后的制动反应时间（BRT）是否存在差异。
连续接受初次髋关节镜检查的成年受试者符合本前瞻性研究的条件。纳入有症状的FAI和髋臼唇盂缘撕裂且接受髋关节镜检查并至少随访8周的个体。术前最多6周以及术后8周内每2周使用RT - 2S反应时间测试仪测量BRT。在每次BRT测试时测量坐立试验（STST）。选择年龄和性别匹配且无髋关节或下肢症状的对照组，并完成BRT和STST测试。术前和术后连续的BRT值采用Mann - Whitney检验和方差分析进行比较。BRT和STST测试之间的相关性采用Spearman相关性分析。预先进行的样本量计算确定，每组（手术组与对照组）至少需要18名受试者才能以80%的检验效能（BRT差异为0.2秒）检测到差异。
分析了19名受试者（年龄37.1±12.7岁，10名女性，11例右髋）。所有受试者均接受了关节镜下髋臼唇盂缘修复和FAI矫正。术前（604±148毫秒[ms]）和术后（2周时608 ms；4周时566 ms；6周时559 ms；8周时595 ms）的BRT无差异。在任何时间点，对照组和受试者之间均无差异。术前以及术后4周和6周时BRT与STST之间存在强负相关，术后2周时存在中度负相关。
对于FAI和髋臼唇盂缘撕裂患者，髋关节镜检查后BRT与术前值或对照组无差异。此外，术后前6周BRT与STST有显著相关性。
II级，诊断性、前瞻性研究。
