The subscapularis is one of the rotator cuff muscles that originates from the underside of the shoulder blade and inserts at the front of the upper arm (humorous). It is the powerful muscle that rotates the arm inwards, and therefore fielders are the most prone to injuring the subscapularis.

Shoulders, hips and ankles don't warrant much attention until you get an injury - then you need one of the specialists on the Orthopaedic Specialist forum.

Movement of a frozen shoulder can be painful, but will not cause damage, writes dr Joe de Beer, arthroscopic shoulder surgeon, and dr Karin van Rooyen.

Many neck and chest muscles are attached via tendons to the collar bone. Bowlers and fielders, through overuse of these muscles often get inflamed tendons.

This is the muscle that fielders use when throwing the ball and is very important as it holds the arm in the shoulder when you release the ball.

In anterior glenohumeral dislocation, the head of the humerus is forced out in an anterior direction past the glenoid labrum and then downward to rest under the coracoid process.

The collarbone runs along the front of the shoulder to the breastbone (sternum). A fracture involves a partial or total crack through the bone.