Stretching positions for the coracohumeral ligament: Strain

Background Contracture of the coracohumeral ligament is reported to restrict external rotation of the shoulder with arm at the side and restrict posterior-inferior shift of the humeral head. The contracture is supposed to restrict range of motion of the glenohumeral joint. Methods To obtain stretching position of the coracohumeral ligament, strain on the ligament was measured at the superficial fibers of the ligament using 9 fresh/frozen cadaver shoulders. By sequential measurement using a strain gauge, the ligament strain was measured from reference length (L0). Shoulder positions were determined using a 3 Space Tracker System. Through a combination of previously reported coracohumeral stretching positions and those observed in preliminary measurement, ligament strain were measured by passive external rotation from 10° internal rotation, by adding each 10° external rotation, to maximal external rotation. Results Stretching positions in which significantly larger strain were obtained compared to the L0 values were 0° elevation in scapula plane with 40°, 50° and maximum external rotation (5.68%, 7.2%, 7.87%), 30° extension with 50°, maximum external rotation (4.20%, 4.79%), and 30° extension + adduction with 30°, 40°, 50° and maximum external rotation (4.09%, 4.67%, 4.78%, 5.05%)(P < 0.05). No positive strain on the coracohumeral ligament was observed for the previously reported stretching positions; ie, 90° abduction with external rotation or flexion with external rotation. Conclusions Significant strain of the coracohumeral ligament will be achieved by passive external rotation at lower shoulder elevations, extension, and extension with adduction.

All About Tendonitis - Pole Dance Injuries

Stretching positions for the coracohumeral ligament: Strain measurement during passive motion using fresh/frozen cadaver shoulders, BMC Sports Science, Medicine and Rehabilitation

Shoulder Impingement Causes, Symptoms, Diagnosis and Treatment

Physical Therapy and Exercise to Increase ROM and Decrease Pain

AC Joint Sprain Stretches & Exercises - Ask Doctor Jo

Winging of scapula due to deltoid contracture.

Simultaneous Strain Measurement With Determination of a Zero

Findings and pathology associated with anterior shoulder instability

Shoulder impingement and shoulder pain - Norris Health

PDF) Age-related changes of the glenoid labrum: a narrative review

High‐Pressure Balloon‐Assisted Stretching of the Coracohumeral Ligament to Determine the Optimal Stretching Positions: A Cadaveric Study - Baek - 2016 - PM&R - Wiley Online Library

MRI scan of a patient with jumper's knee (patellar tendinopathy

How to Heal an AC Separation - Heiden Orthopedics

3 Powerful Shoulder Impingement Stretches For Pain Relief