The preferable shoulder position can isolate supraspinatus activity superior to the classic empty can test: an electromyographic study.

ABSTRACT:

Background

Supraspinatus (SSP) strength tests are an important shoulder examination tool for clinical evaluations of patients with a suspected SSP tear. While the empty can (EC) test is widely used to diagnose SSP dysfunction, the test cannot selectively activate SSP activity. The aim of this study was to access the electromyographic (EMG) activity within SSP, deltoid, and surrounding periscapular muscles after resisted abduction force to determine which shoulder position helps best isolate SSP from deltoid activity.

Methods

A controlled laboratory EMG study was conducted. Specifically, we conducted an EMG analysis of the seven periscapular muscles (i.e., the middle deltoid, anterior deltoid, SSP, upper trapezius, posterior deltoid, infraspinatus, and pectoralis major) in 21

SUBMITTER: Kijkunasathian C 

PROVIDER: S-EPMC10069100 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature