Seijas Roberto, Alentorn-Geli Eduard, Álvarez-Díaz Pedro, Marín Miguel, Ares Oscar, Sallent Andrea, Cuscó Xavier, Cugat Ramón
Fundación García-Cugat. Artroscopia GC, Hospital Quirón, Barcelona, Spain.
Universitat Internacional de Catalunya, Barcelona, Spain.
Arch Orthop Trauma Surg. 2016 Jun;136(6):785-9. doi: 10.1007/s00402-016-2428-6. Epub 2016 Feb 25.
the aim of the present study is to evaluate the mechanical and contractile properties of the gluteus maximus (GM) muscle in patients with femoroacetabular impingement (FAI). Our hypothesis is that the clinical observation of GM pain would be evidenced by tensiomyographic impairment in muscle function.
A prospective, cross-sectional, intra-group comparative study was conducted to assess the neuromuscular changes of lower extremity muscles in patients with FAI. Fifty-one patients with clinical and radiographic diagnosis of FAI for at least 3 months were included. The rectus femoris (RF), adductor magnus (AM), and GM of both lower extremities of all patients were evaluated with tensiomyography (TMG). The values of TMG of the affected lower extremity were compared to those of the healthy contralateral side. The parameters obtained in this study were maximal displacement (Dm), and contraction time (Tc).
The Tc of the injured GM was significantly higher compared to the healthy side (p = 0.01). There were no significant side-to-side differences in the Dm of the GM (p = 0.13), either in the Tc and Dm of the RF (p = 0.15 and p = 0.8, respectively) and AM (p = 0.25 and p = 0.75, respectively).
FAI is associated with impairment of contraction time in the GM of the injured compared to the healthy side. Impairment of the GM may be monitored to evaluate response to conservative or surgical treatment.
本研究的目的是评估股骨髋臼撞击症（FAI）患者臀大肌（GM）的力学和收缩特性。我们的假设是，GM疼痛的临床观察将通过肌肉功能的张力肌电图损害得到证实。
进行了一项前瞻性、横断面、组内比较研究，以评估FAI患者下肢肌肉的神经肌肉变化。纳入了51例临床和影像学诊断为FAI至少3个月的患者。所有患者双下肢的股直肌（RF）、大收肌（AM）和GM均采用张力肌电图（TMG）进行评估。将患侧下肢的TMG值与对侧健康侧进行比较。本研究获得的参数为最大位移（Dm）和收缩时间（Tc）。
受伤GM的Tc与健康侧相比显著更高（p = 0.01）。GM的Dm在两侧之间无显著差异（p = 0.13），RF的Tc和Dm（分别为p = 0.15和p = 0.8）以及AM的Tc和Dm（分别为p = 0.25和p = 0.75）也无显著差异。
与健康侧相比，FAI与受伤侧GM的收缩时间受损有关。可监测GM的损害情况以评估对保守或手术治疗的反应。
