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Proximal humeral fractures

Fractures of the proximal humerus represent about 4-5 % of all fractures and are the third most common fractures in the elderly. Theses fractures are increasingly common in the over 60's age group. In this age group most injuries are related to low injury falls. However in younger patients higher energy injuries are usually required to cause a fracture.

The majority (about 80%) of fractures are undisplaced or minimally displaced. These injuries require simple sling immobilisation for 1-2 weeks followed by early mobilisation.

Initial exercises are pendular and passive moving onto active assist. Healing can take up to 3 months and recovery is slow as the shoulder stiffens and a shoulder will continue to improve up to a year after injury.

Xrays show a minimally displaced fracture.

Please watch the animation on proximal humeral fractures

 

 

 

Displaced fractures

There is still debate as to the best way to treat displaced fractures at the upper end of the humerus. Fractures tend to occur in predictable patterns and some of the fracture fragments can have the rotator cuff attached. If these fragments are displaced then this may compromise use of the arm if the displacement is not corrected.

The diagram shows the greater tuberosity fragment which has the insertion of the important rotator cuff tendons which control elevation of the arm away from the body.

If a fracture is significantly displaced and the patient is fit and healthy then they will likely benefit from surgery with open reduction and internal fixation of the fracture. The most common techniques is to use a locked proximal humeral plate (as seen here)

The above xrays and diagram show a displaced fracture of the proximal humerus which has been fixed with a locking plate.

Please watch the animation on operative fixation of proximal humeral fractures

 

Postoperative care

After surgery some rest is required to allow healing and mobility is commenced under the guidance of the physiotherapists. Depending on fracture stability pendular exercises will commence straight away with active assist exercises introduced later.

Andrew Brooksbank

 

 

 

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