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Comparison of Three-Dimensional Motion of the Scapula during the Hawkins-Kennedy Test and the Sidelying Sleeper Stretch
Comparison of Three-Dimensional Motion of the Scapula during the Hawkins-Kennedy Test and the Sleeper Stretch. Alyssa S. Buchner, Tami J. Buus, Brittany N. Evans, Kirsten E. Lambert, Lisandra M. Scheevel Advisor: Cort J. Cieminski, PT, PhD, ATR PURPOSE: The Hawkins-Kennedy test is a pain provocation test used to identify shoulder pathology. With this test, it is hypothesized the scapula tips anteriorly and compresses soft tissue structures of the shoulder, causing pain. A common intervention for this type of shoulder pathology is the sidelying sleeper stretch. Although the glenohumeral (GH) joint is in the same anatomical position for both conditions, the sleeper stretch does not typically provoke pain. In the sidelying position the scapula was stabilized by the subject’s body weight, theoretically limiting the amount of anterior tipping. Currently, there is no research investigating the scapular arthrokinematics in both conditions. The purpose of this study is to measure scapular tipping accompanying shoulder internal rotation (IR) range of motion (ROM) in the sidelying sleeper stretch position compared to the Hawkins-Kennedy test position.
METHODS: While passive moving from full shoulder external to internal rotation, scapular tipping and GH IR were measured in the Hawkins-Kennedy and sidelying sleeper stretch using three-dimensional motion analysis, on the dominant shoulder of 30 healthy subjects (13 male [31.3±13.0 years, 24.6±2.7 BMI] and 17 female [27.4±8.7 years, 23.2±2.3 BMI]).
RESULTS: Hawkins-Kennedy GH IR mean was 94.1°±13.2° and sidelying GH IR mean was 71.9°±15.9° (