Background

It is unclear whether hip and pelvic mobility in the sagittal plane are associated with hip function in FAIS. This study aimed to determine whether hip-pelvis-lumbar mobility is associated with preoperative hip function and postoperative outcomes in FAIS.

Methods

This was a level 3 case–control study. This study included 111 patients who underwent arthroscopic FAI correction and labral preservation between 2015 and 2019. The Hip-Pelvic-Lumbar Mobility Test (HPLMT) was performed preoperatively; hip flexion with the hip adducted and internally rotated was examined in the lateral decubitus position, and a total hip flexion angle of less than 120° was diagnosed as positive. HPLMT-positive patients were classified as cases, and HPLMT-negative patients were classified as controls. Hip muscle strength was measured preoperatively using a hand-held dynamometer. The modified Harris hip score (mHHS), Nonarthritic Hip Score (NAHS), and International Hip Outcome Tool-12 score were obtained preoperatively and postoperatively. The rates of patient acceptable symptomatic state (PASS) achievement for patient-reported outcome scores (PROSs) were compared between groups.

Results

The preoperative PROSs for the HPLMT-positive patients were significantly lower than those for the HPLMT-negative patients. HPLMT-positive patients had significantly weaker hip strength on the affected side than HPLMT-negative patients (flexion; p < 0.001, abduction; p = 0.001). HPLMT-positive patients had significantly lower postoperative mHHS than HPLMT-negative patients. HPLMT-positive patients were significantly less likely to achieve a PASS for the mHHS (62% versus 85%) and NAHS (48% versus 71%) than HPLMT-negative patients.

Conclusion

Hip-pelvis-lumbar mobility is associated with hip function and clinical outcomes in FAIS patients. The HPLMT is an efficient tool for assessing FAIS patients.

中文翻译：

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股骨髋臼撞击综合征患者髋部-骨盆-腰部联合活动度与髋部肌肉力量和临床结果的关系：病例对照研究

背景

目前尚不清楚矢状面的髋部和骨盆活动度是否与 FAIS 中的髋部功能相关。本研究旨在确定髋-骨盆-腰椎活动度是否与 FAIS 术前髋关节功能和术后结果相关。

方法

这是一项 3 级病例对照研究。本研究纳入了 2015 年至 2019 年间接受关节镜 FAI 矫正和盂唇保留的 111 名患者。术前进行了髋-骨盆-腰椎活动测试（HPLMT）；侧卧位检查髋关节内收内旋屈髋，髋关节总屈曲角小于120°诊断为阳性。HPLMT阳性患者被归类为病例，HPLMT阴性患者被归类为对照。术前使用手持式测力计测量髋部肌肉力量。术前和术后获得改良的Harris 髋关节评分 (mHHS)、非关节炎髋关节评分 (NAHS) 和国际髋关节结果工具 12 评分。比较各组之间患者报告的结果评分 (PROS) 的患者可接受症状状态 (PASS) 达到率。

结果

HPLMT 阳性患者的术前 PROS 显着低于 HPLMT 阴性患者。HPLMT 阳性患者患侧髋部力量明显弱于 HPLMT 阴性患者（屈曲；p < 0.001，外展；p = 0.001）。HPLMT 阳性患者术后 mHHS 显着低于 HPLMT 阴性患者。与 HPLMT 阴性患者相比，HPLMT 阳性患者在 mHHS（62% 对 85%）和 NAHS（48% 对 71%）方面获得 PASS 的可能性明显较低。

结论

髋骨盆腰椎活动度与 FAIS 患者的髋关节功能和临床结果相关。HPLMT 是评估 FAIS 患者的有效工具。