METHODS: Thirty patients with bilateral PCFD and 30 controls underwent weight-bearing anteroposterior (AP), lateral, and hindfoot alignment radiographs of the foot. Radiographic parameters of PCFD were assessed. Surface electromyography was used to assess the quadriceps, hamstrings, and gastrosoleus activities, and this was compared between the 2 groups and correlated with radiological measurements of PCFD. Tegner activity questionnaire was used to assess the functional effects of collapsed arch.
RESULTS: Electrical activities of all muscle groups were significantly higher in cases than controls. Meary\'s angle and hindfoot moment arm had significant correlations with hamstring activity (P = .013) and gastrosoleus activity (P = .027), respectively. Tegner scores of cases were significantly lower than those of controls (P = .041).
CONCLUSIONS: The PCFD causes an increase in activity of large muscles of the affected lower limb which act on joints other than those in the foot. This finding may be due to several compensatory mechanisms that counteract the deforming forces. This may be a cause for the frequent complaint, early fatigue, and hence functional impairment. However, most radiological parameters did not correlate with muscle activities and larger study size may be required for further association.
UNASSIGNED: Diagnostic: Level 3.
方法:30例双侧PCFD患者和30例对照者接受负重前后(AP),横向,和脚的后足对准射线照片。评估了PCFD的射线照相参数。表面肌电图用于评估股四头肌,腿筋,和腹肌活动,并在两组之间进行比较,并与PCFD的放射学测量结果相关。Tegner活动问卷用于评估塌陷弓的功能影响。
结果:病例中所有肌肉群的电活动均明显高于对照组。米里角和后足力矩臂与腿筋活动(P=.013)和腹肌活动(P=.027)有显著相关性,分别。病例的Tegner评分明显低于对照组(P=.041)。
结论:PCFD导致受影响的下肢大肌肉的活动增加,这些肌肉作用于足部以外的关节。这一发现可能是由于几种补偿机制抵消了变形力。这可能是经常抱怨的原因,早期疲劳,因此功能受损。然而,大多数放射学参数与肌肉活动无关,可能需要更大的研究规模才能进一步关联.
■诊断:3级。