Effect of intraarticular pressure on glenohumeral kinematics during a simulated abduction motion: a cadaveric study.

ABSTRACT:

Background

The current understanding of glenohumeral joint stability is defined by active restrictions and passive stabilizers including naturally-occurring negative intraarticular pressure. Cadaveric specimens have been used to evaluate the role of intraarticular pressure on joint stability, although, while the shoulder's negative intraarticular pressure is universally acknowledged, it has been inconsistently accounted for.

Hypothesis

During continuous, passive humeral abduction, releasing the native intraarticular pressure increases joint translation, and restoring this pressure decreases joint translations.

Study design

Descriptive Laboratory Study.

Methods

A validated shoulder testing system was used to passively abduct the humerus in the scapular plane and

SUBMITTER: Williamson PM 

PROVIDER: S-EPMC9906871 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature