University of Virginia, Charlottesville, VA 22908-0159, USA.
J Athl Train. 2010 Jan-Feb;45(1):87-97. doi: 10.4085/1062-6050-45.1.87.
Arthrogenic muscle inhibition is an important underlying factor in persistent quadriceps muscle weakness after knee injury or surgery.
To determine the magnitude and prevalence of volitional quadriceps activation deficits after knee injury.
Web of Science database.
Eligible studies involved human participants and measured quadriceps activation using either twitch interpolation or burst superimposition on patients with knee injuries or surgeries such as anterior cruciate ligament deficiency (ACLd), anterior cruciate ligament reconstruction (ACLr), and anterior knee pain (AKP).
Means, measures of variability, and prevalence of quadriceps activation (QA) failure (<95%) were recorded for experiments involving ACLd (10), ACLr (5), and AKP (3).
A total of 21 data sets from 18 studies were initially identified. Data from 3 studies (1 paper reporting data for both ACLd and ACLr, 1 on AKP, and the postarthroscopy paper) were excluded from the primary analyses because only graphical data were reported. Of the remaining 17 data sets (from 15 studies), weighted mean QA in 352 ACLd patients was 87.3% on the involved side, 89.1% on the uninvolved side, and 91% in control participants. The QA failure prevalence ranged from 0% to 100%. Weighted mean QA in 99 total ACLr patients was 89.2% on the involved side, 84% on the uninvolved side, and 98.5% for the control group, with prevalence ranging from 0% to 71%. Thirty-eight patients with AKP averaged 78.6% on the involved side and 77.7% on the contralateral side. Bilateral QA failure was commonly reported in patients.
Quadriceps activation failure is common in patients with ACLd, ACLr, and AKP and is often observed bilaterally.
关节源性肌肉抑制是膝关节损伤或手术后股四头肌持续无力的一个重要潜在因素。
确定膝关节损伤后患者股四头肌主动激活缺陷的程度和发生率。
Web of Science 数据库。
纳入的研究涉及人类参与者，并使用肌挛缩刺激或爆发叠加技术测量膝关节损伤或手术患者（如前交叉韧带缺陷（ACLd）、前交叉韧带重建（ACLr）和前膝痛（AKP））的股四头肌激活情况。
记录了 ACLd（10 项研究）、ACLr（5 项研究）和 AKP（3 项研究）中涉及的实验中股四头肌激活（QA）失败（<95%）的平均值、变异性指标和发生率。
最初确定了 21 项研究共 18 组数据。由于仅报告了图形数据，有 3 项研究（1 篇报告 ACLd 和 ACLr 的数据，1 篇报告 AKP，以及关节镜术后的研究）的数据被排除在主要分析之外。在其余的 17 组数据（来自 15 项研究）中，352 例 ACLd 患者患侧 QA 的加权平均值为 87.3%，健侧为 89.1%，对照组为 91%。QA 失败的发生率范围为 0%至 100%。99 例 ACLr 患者的总 QA 的加权平均值为患侧 89.2%，健侧 84%，对照组为 98.5%，发生率范围为 0%至 71%。38 例 AKP 患者患侧平均 QA 为 78.6%，对侧为 77.7%。患者双侧 QA 失败的情况很常见。
ACLd、ACLr 和 AKP 患者的股四头肌激活失败很常见，且常为双侧。
