Frozen shoulder
Adhesive capsulitis

A frozen shoulder (adhesive capsulitis) is caused by an inflammation of the joint capsule of the shoulder. This can cause thickening and adhesion of the joint capsule, which may result in a painful shoulder and prolonged symptoms.

shoulder frozen shoulder

The age at which most patients present with a frozen shoulder is between 40 and 60. We also know that people with diabetes mellitus are affected by the condition much more frequently.

Description of condition

The joint capsule of the shoulder connects the socket of the shoulder blade (scapula) to the head of the upper arm (humerus). The function of the joint capsule is to limit overextension of the shoulder joint so preventing subluxation (partial dislocation). A frozen shoulder is the term given to adhesions and thickening in the joint capsule that make shoulder movements stiff and painful.

Cause and history

Inflammation in the joint capsule that can result in a frozen shoulder may occur spontaneously or as a result of trauma (accident or fall). If the inflammation occurs spontaneously we refer to this as a "primary frozen shoulder". If it occurs following trauma, we refer to it as a "secondary frozen shoulder".

The symptoms develop gradually and may persist for months, or even years. Eventually the symptoms gradually disappear until the patient is pain-free. The patient will often have a (slight) restriction of movement that does not improve further. Despite the prolonged nature of the condition, it is not serious and the patient will usually make a complete recovery.

Signs & symptoms

The pain is located on the outside of the shoulder and can radiate over the upper arm. In severe cases the pain may even be felt in the hand. In addition, restriction of movement will also occur. In particular, the patient will avoid outward rotation and raising of the arm due to the pain. Rapid and unexpected movements of the arm can cause severe pain.

The condition is divided into three phases: A "freezing" phase, a "frozen" phase and a "thawing" phase.

The freezing phase lasts 2 to 9 months. This phase is accompanied by pain and increasing stiffness. The pain is often worst at night.

During the frozen phase, lasting 4 to 12 months, the stiffness remains. However, the pain gradually decreases and is limited to fully extended movements.

During the last, thawing, phase, which may last several months to several years, the range of motion gradually increases until the patients is free of symptoms.

Diagnosis

A diagnosis is made based on the patient's history and examination of the range of motion. X-rays usually do not reveal any abnormalities.

Treatment

The shoulder will eventually heal spontaneously and the stiffness will mostly disappear. The physiotherapy treatment is aimed at (pain-free) active mobilization of the shoulder and combatting the pain. If the pain is severe, a corticosteroid injection may be considered. Surgery can accelerate the recovery during the last "thawing" phase of the condition. The shrivelled capsule is manipulated under general anesthetic.

Exercises

Take a look here at the online exercise program with exercises for a frozen shoulder.


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

shoulder joint capsule

References
Dias, R. Cutts, S. & Massoud, S. (2005). Frozen shoulder. BMJ 2005;331:1453-56.
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 (2005). Orthopedie. Houten: Bohn Stafleu van Loghum.
Vermeulen, H.M., Schuitemaker, R., Hekman, K.M.C., Burg, D.H. van der & Struyf, F. (2017). De SNN Praktijkrichtlijn Frozen Shoulder voor fysiotherapeuten. Schoudernetwerken Nederland.
Wilk, K.E., Reinold, M.M. & Andrews, J.R. (2009). The atlete's shoulder. Philadelphia: Churchill livingstone. Elsevier.

shoulder frozen shoulder
shoulder joint capsule

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