Emami Meybodi Mohammad Kazem, Jannesari Morteza, Rahim Nia Alireza, Yaribeygi Habib, Sobhani Firoozabad Vahid, Dorostegan Ahmad
Department of Orthopedics, Baqiyatallah University of Medical Sciences, Tehran, IR Iran.
Department of Physiology and Biophysics, Baqiyatallah University of Medical Sciences, Tehran, IR Iran.
Trauma Mon. 2013 Dec;18(3):130-3. doi: 10.5812/traumamon.12813. Epub 2013 Oct 14.
Anterior cruciate ligament (ACL) injury is the most common sports injury in both athletes and nonathletes; it can cause disability if not treated correctly. In cases with minor injuries, conservative treatments suffice. But, in cases with ACL tear, surgery by different methods and autografts are indicated. The most prevalent method for ACL reconstruction is the use of hamstring tendon autograft; this requires tendon removal and results in subsequent weakness in patient's knee flexion strength which can cause dissatisfaction.
In this study we evaluate a common procedure used for treating ACL injuries.
This study was performed at a hospital in Tehran on 30 patients with ACL tears. Patients' knee flexion strengths before and 2, 4, 6, and 12 months after reconstruction were measured separately at 20, 45, 90, and 110˚ knee flexion angles, and their means were analyzed using paired t-test.
In this study, knee flexion strength decreased after ACL reconstruction. The greatest decrease in knee flexion strength was observed at 90 and 110˚ knee flexion angles.
Some previous studies have confirmed reduced knee flexion strength following ACL reconstruction at high knee flexion angles. However, some others have denied it. The present study confirmed the reduction in knee flexion strength one year after ACL reconstruction at 90 and 110˚ flexion angles (P = 0.000). Furthermore, the need for physiotherapy, as a process for rehabilitating these patients was also confirmed.
前交叉韧带（ACL）损伤是运动员和非运动员中最常见的运动损伤；若治疗不当，可能导致残疾。对于轻伤病例，保守治疗即可。但是，对于ACL撕裂的病例，则需要采用不同方法和自体移植物进行手术。ACL重建最常用的方法是使用腘绳肌腱自体移植物；这需要切除肌腱，随后会导致患者膝关节屈曲力量减弱，从而可能引起患者不满。
在本研究中，我们评估一种用于治疗ACL损伤的常见手术方法。
本研究在德黑兰的一家医院对30例ACL撕裂患者进行。分别在膝关节屈曲角度为20°、45°、90°和110°时测量患者重建前以及重建后2个月、4个月、6个月和12个月的膝关节屈曲力量，并使用配对t检验分析其平均值。
在本研究中，ACL重建后膝关节屈曲力量下降。在膝关节屈曲角度为90°和110°时，观察到膝关节屈曲力量下降最为明显。
一些先前的研究证实，在高膝关节屈曲角度下ACL重建后膝关节屈曲力量会降低。然而，其他一些研究则予以否认。本研究证实，在膝关节屈曲角度为90°和110°时，ACL重建一年后膝关节屈曲力量下降（P = 0.000）。此外，还证实了需要进行物理治疗，作为这些患者康复的一个过程。
