Rotator cuff injury
M. supraspinatus, infraspinatus, teres minor and subscapularis

The rotator cuff is a collective term for the four muscles in the shoulder that are mainly responsible for shoulder stability. They are mainly active in the mid-range positions of the shoulder joint. Weakness and degenerative changes of the rotator cuff muscles and tendons will often result in shoulder symptoms.

shoulder rotatorcuff rotator cuff muscles supraspinatus subscapularis muscle anterior view

Rotator cuff injury is more common in elderly people. It is also more common in people who play sports that involve overhand throwing or use of rackets.

Description of the condition

The rotator cuff consists of the supraspinatus muscle, the infraspinatus muscle, the teres minor muscle and the subscapularis muscle. Together, they ensure that the head of the humerus is stabilised in the socket during shoulder movements. If this does not happen, through injury or impaired coordination, this can result in impingement of the head of the humerus below the roof of the shoulder (acromion). This is called impingement.

Cause and origin

Injury to one or more of the rotator cuff muscles can be caused by overloading, degeneration or trauma such as a fall on the shoulder or the arm.

Signs & symptoms

Pain in the shoulder, loss of strength and feeling of instability are common symptoms following a rotator cuff injury. In addition, patients can struggle to lift the arm and work above shoulder height. If tears occur in the cuff muscles, the patient can also experience pain at night when lying on the affected shoulder.

Diagnosis

Treatment

Specific exercises to train the rotator cuff can result in muscle recovery. If a torn muscle does not recover, surgical stitching can be considered.

Advice


You can check your symptoms using the online physiotherapy check or make an appointment with a physiotherapy practice in your area.

shoulder rotatorcuff rotator cuff muscle muscles posterior view supraspinatus infraspinatus teres minor

References
Nugteren, K. van & Winkel, D. (2007). Onderzoek en behandeling van de schouder. Houten: Bohn Stafleu van Loghum.
Verhaar, J.A.N. & Linden, A.J. van der (2003). Orthopedie. Houten: Bohn Stafleu van Loghum.
Winters, J.C., Windt, D.A.W.M. van der, Spinnewijn, W.E.M., Jongh, A.C. de, Heijden, G.J.M.G. van der, Buis, P.A.J., Boeke, A.J.P, Feleus, A. & Geraets, J.J.X.R. (2008). NHG-standaard. Schouderklachten. Tweede herziening. Huisarts Wet. 2008; 51(11):555-65.

shoulder rotatorcuff rotator cuff muscles supraspinatus subscapularis muscle anterior view
shoulder rotatorcuff rotator cuff muscle muscles posterior view supraspinatus infraspinatus teres minor

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