Ezzati Kamran, Soleymanha Mehran, Asadi Kamran, Ettehad Hossein, Khansha Rahman
Department of Physiotherapy, Neuroscience Research Center, School of Medicine, Poursina Hospital, Guilan University of Medical Sciences, Rasht, Iran.
Orthopaedic Research Center, Department of Orthopaedic Surgery, Poursina Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
Arch Bone Jt Surg. 2024;12(12):859-865. doi: 10.22038/ABJS.2024.80937.3692.
To compare the thickness and function of the quadriceps muscle in subjects with and without patellofemoral pain syndrome (PFPS) by ultrasonography.
Patients diagnosed with PFPS were included in the study. To measure the thickness of the rectus femoris (RF), vastus medialis longus and oblique (VML, VMO), vastus lateralis (VL) and vastus intermedius (VI), the ultrasonography was employed in rest and normal contraction modes and also the % rest-thickness normal as muscle function. For between-groups comparisons, the independent sample t-test was utilized.
Sixty subjects (30 PFPS and 30 healthy) participated in this study. There were no significant differences between two groups with respect to demographic characteristics. No significant differences were observed between two groups regarding RF (P=0.07), VMO (P=0.38), VL (P=0.40) and VI (P=0.55) at rest. However, the rest thickness of VML (P=0.01) was significant between PFPS and healthy groups. No significant differences were found between two groups regarding RF (P=0.14), VML (P=0.68), VMO (P=0.11), VL (P=0.65), and VI (P=0.07) in contraction state. However, % rest-thickness normal were significant between groups for VML (P=0.03) and VMO (P=0.02) and were not significant for RF (P=0.56), VL (P=0.14) and VI (P=0.08).
In all parts of the quadriceps, % rest-thickness normal, as an indicator of its function, have been decreased in patients with PFPS. In patients with PFPF, ultrasonography should be cautiously used for muscle thickness comparisons.
通过超声检查比较有和没有髌股疼痛综合征（PFPS）的受试者股四头肌的厚度和功能。
被诊断为PFPS的患者纳入本研究。为测量股直肌（RF）、股内侧长肌和斜肌（VML、VMO）、股外侧肌（VL）和股中间肌（VI）的厚度，在静息和正常收缩模式下采用超声检查，同时将静息厚度占正常厚度的百分比作为肌肉功能指标。组间比较采用独立样本t检验。
60名受试者（30名PFPS患者和30名健康者）参与了本研究。两组在人口统计学特征方面无显著差异。静息时，两组在RF（P = 0.07）、VMO（P = 0.38）、VL（P = 0.40）和VI（P = 0.55）方面未观察到显著差异。然而，PFPS组和健康组之间VML的静息厚度有显著差异（P = 0.01）。收缩状态下，两组在RF（P = 0.14）、VML（P = 0.68）、VMO（P = 0.11）、VL（P = 0.65）和VI（P = 0.07）方面未发现显著差异。然而，VML（P = 0.03）和VMO（P = 0.02）的静息厚度占正常厚度的百分比在组间有显著差异，而RF（P = 0.56）、VL（P = 0.14）和VI（P = 0.08）则无显著差异。
在PFPS患者中，股四头肌各部位静息厚度占正常厚度的百分比作为其功能指标均有所降低。对于PFPS患者，超声检查用于肌肉厚度比较时应谨慎使用。
