St-Pierre Marc-Olivier, Effatparvar Mohammad Reza, Begon Mickaël, Sobczak Stéphane
Chaire de recherche en anatomie fonctionnelle, Université du Québec à Trois-Rivières, 3351, boul. des Forges C.P. 500, Trois-Rivières, QC G8Z 4M3, Canada; Département d'anatomie, Université du Québec à Trois-Rivières, 3351, boul. des Forges C.P. 500, Trois-Rivières, QC G8Z 4M3, Canada.
Chaire de recherche en anatomie fonctionnelle, Université du Québec à Trois-Rivières, 3351, boul. des Forges C.P. 500, Trois-Rivières, QC G8Z 4M3, Canada; Département d'anatomie, Université du Québec à Trois-Rivières, 3351, boul. des Forges C.P. 500, Trois-Rivières, QC G8Z 4M3, Canada.
Clin Biomech (Bristol). 2023 Feb;102:105903. doi: 10.1016/j.clinbiomech.2023.105903. Epub 2023 Feb 2.
Flexion-abduction-external-rotation (FABER) test is one of the most used tests during the clinical assessment of the hip joint. The limited range of motions reached could be due to iliofemoral ligament tightness, but no study has assessed capsular ligament strain during this test. The main objective of this study is to report strains within the iliofemoral ligament during the FABER test using a segmental approach.
9 hips were harvested, and all muscles were removed. Hemispherical markers (∅ 2.6 mm) were glued on the lateral and medial borders of both the medial and lateral iliofemoral bands, separating each border into proximal, mid, and distal portions. The lower limb was placed in a FABER test position. A laser scanner allowed to digitize the 3D surface of the capsule. A Kruskal-Wallis test was performed to assess the effect of ligaments, borders, and portions.
The lateral band of the iliofemoral ligament showed greater strains (14.6 ± 11.4%) compared to the medial band (-8.7 ± 14.2%) (p < 0.001). The greatest strains were observed in the distal portion of the lateral border of the lateral band (51.1 ± 21.5%). A decrease in strain was observed in the mid-portion of the medial border of the medial iliofemoral ligament (-27.9 ± 8.9%).
The FABER test is used to assess pain at the hip. Our results show that the limited range of motion at the hip during this test might be caused by increased strains in the lateral band. These results demonstrate that a limitation of joint range of motion during the FABER could be due to an excessive tension of the lateral band of the iliofemoral ligament.
屈曲-外展-外旋（FABER）试验是髋关节临床评估中最常用的试验之一。活动范围受限可能是由于髂股韧带紧张，但尚无研究评估该试验期间关节囊韧带的应变情况。本研究的主要目的是采用分段法报告FABER试验期间髂股韧带内的应变情况。
获取9个髋关节，切除所有肌肉。将半球形标记物（直径2.6毫米）粘贴在髂股内外侧束的内外侧边缘，将每个边缘分为近端、中部和远端部分。将下肢置于FABER试验位置。使用激光扫描仪对关节囊的三维表面进行数字化处理。进行Kruskal-Wallis检验以评估韧带、边缘和部分的影响。
与内侧束（-8.7±14.2%）相比，髂股韧带外侧束的应变更大（14.6±11.4%）（p<0.001）。在外侧束外侧边缘的远端部分观察到最大应变（51.1±21.5%）。在髂股韧带内侧束内侧边缘的中部观察到应变降低（-27.9±8.9%）。
FABER试验用于评估髋关节疼痛。我们的结果表明，该试验期间髋关节活动范围受限可能是由于外侧束应变增加所致。这些结果表明，FABER试验期间关节活动范围受限可能是由于髂股韧带外侧束过度紧张所致。
