Delitto A, McKowen J M, McCarthy J A, Shively R A, Rose S J
Program in Physical Therapy, Washington University Medical School, St. Louis, MO.
Phys Ther. 1988 Jan;68(1):45-50. doi: 10.1093/ptj/68.1.45.
The purpose of this article is to describe a method for strengthening the quadriceps femoris muscle in a patient after anterior cruciate ligament (ACL) surgery. The method incorporates electrically elicited co-contraction of the quadriceps femoris and hamstring muscles. A single-case experimental design based on a split-middle (ABAB) technique was used to assess the effects of the systematic administration and withdrawal of electrical stimulation with respect to changes in knee isometric extension and flexion torque and circumferential measurements of the thigh in a patient six weeks after ACL reconstruction. Results show increases in extension and flexion torque and thigh circumferential measurements that are associated with both stimulation (treatment) phases in addition to a maintenance effect demonstrated during the withdrawal phase. In this patient, the technique appears to be effective in increasing muscle strength and circumferential measurements, particularly quadriceps femoris muscle torque. Implications and suggestions for future research are included.
本文的目的是描述一种在前交叉韧带（ACL）手术后患者中强化股四头肌的方法。该方法包括通过电刺激引发股四头肌和腘绳肌的共同收缩。采用基于前后对照（ABAB）技术的单病例实验设计，以评估在ACL重建六周后的患者中，系统给予和撤掉电刺激对膝关节等长伸展和屈曲扭矩以及大腿周径测量变化的影响。结果显示，除了在撤掉刺激阶段表现出维持效应外，伸展和屈曲扭矩以及大腿周径测量在两个刺激（治疗）阶段均有所增加。在该患者中，该技术似乎在增加肌肉力量和周径测量方面有效，尤其是股四头肌扭矩。文中还包括了对未来研究的启示和建议。
