Biomedical Department, Faculty of Health Sciences, University of Antofagasta, Antofagasta, Chile.
Postgraduate Department of Manual Therapy, Faculty of Rehabilitation Sciences, Andres Bello University, Santiago, Chile.
J Man Manip Ther. 2021 Dec;29(6):353-359. doi: 10.1080/10669817.2021.1904350. Epub 2021 Mar 25.
: Distraction techniques are an important part of the manual approach in the glenohumeral joint; however, there is controversy regarding the initial joint position to maximize separation of joint surfaces.: To identify, through an exploration, the behavior of the coracohumeral distance (CHD) during the application of a short lever arm grade III distraction technique on the humeral head, executed in three different glenohumeral positions (zero position (P0), rest position (RP) and 90º abduction position with maximum external rotation (ABD+ER)).: 15 participants were selected. A physical therapist executed grade III distraction techniques in described joint positions. Ultrasound was used to visualize the differences in CHD. Statistical analysis included interclass correlation coefficients (ICC) and repeated measurements of ANOVA.: The range of ICC values was 0.740 and 0.948. The differences in CHD were 5.74 ± 0.51 mm, 3.97 ± 0.24 mm, and 0.64 ± 0.02 mm, for P0, RP and ABD+ER during application of distraction technique, respectively. There were differences between P0 and RP with ABD+ER ( < 0.001), and no differences between P0 and RP.: Initial joint position of application influences the separation of the articular surfaces, being wider in the zero and rest positions.
: 分散技术是盂肱关节手法治疗的重要组成部分；然而，对于初始关节位置以最大程度地分离关节面，仍存在争议。: 通过探索，确定在肱骨头施加短杠杆臂 III 级牵开技术时，喙肱距离（CHD）的行为，在三种不同的盂肱关节位置（零位置（P0）、休息位置（RP）和 90°外展位置伴最大外旋（ABD+ER））下执行。: 选择了 15 名参与者。一名物理治疗师在描述的关节位置执行 III 级牵开技术。使用超声来可视化 CHD 的差异。统计分析包括组内相关系数（ICC）和重复测量的方差分析。: ICC 值的范围为 0.740 至 0.948。在应用牵开技术时，P0、RP 和 ABD+ER 时 CHD 的差异分别为 5.74±0.51mm、3.97±0.24mm 和 0.64±0.02mm。P0 和 ABD+ER 与 RP 之间存在差异（<0.001），而 P0 和 RP 之间没有差异。: 初始关节位置的应用会影响关节面的分离，在零位和休息位时更宽。
