Evaluation of the Rough Shoulder.

Introduction

Diagnosing problems of shoulder roughness

In order for the shoulder to function effectively, smooth movement must occur in a number of critical joints and motion interfaces. These include the joints:

1. between the humerus and scapula (glenohumeral or "ball and socket" joint),
2. between the clavicle and the scapula (acromioclavicular joint) and
3. between the clavicle and the sternum (sternoclavicular joint).

Smooth motion must also occur at the motion interfaces:

1. between the shoulder blade and the chest wall (scapulothoracic motion interface), and
2. between the upper arm and the surrounding tissues (humeroscapular motion interface).

Roughness, catching, grinding, crunching, or snapping at any of these locations may interfere with the functioning of the shoulder.

Just because noise is produced on moving the shoulder doesn't mean that a serious problem is present. On the other hand, loss of the smooth motion of the shoulder can deprive the joint of its normal comfort, range of motion and function.

A good history and physical examination along with quality plain X-rays provide sufficient information to diagnose most of the important problems of shoulder roughness.

Movie

• Joints and Motion Interfaces Movie (1.54 MB)

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