Fractured Shoulder Treatment by Physiotherapists
Humeral fractures occur commonly with up to five percent of all fractures falling into this category, eighty percent of humeral fractures being minimally displaced or undisplaced. Osteoporosis is a contributing factor in many of these fractures and a fracture of the forearm on the same side is a typical presentation. Nerve or arterial damage from the fracture is an important consideration but not common. Typical sites of fractures are the top of the arm (neck of humerus - “shoulder fracture”) and the middle of the shaft of the humerus.
A fall onto the outstretched hand, onto the elbow or onto the shoulder itself is the most common cause of a fractured arm. Since many of the arm muscles insert onto the humeral head, when the injury occurs the muscular action involved can displace the fragments and complicate the management. 65 years old is the peak incidence for this kind of fractured humerus and if younger patients suffer this fracture the likely cause will involve high forces such as traffic accidents or sports injury.
If the fracture occurred without significant force then a pathological cause such as cancer must be suspected. On physio examination pain will occur on movement of the shoulder or the elbow, there may be extensive bruising and swelling, the arm may appear short if the fracture is displaced in shaft fractures and there is very restricted shoulder movement. Radial nerve damage is rare in upper humeral fractures but more common in fractures of the shaft, leading to “wrist drop”, weakness of the wrist and finger extensors and some thumb movements.
Shoulder Fracture Management
Initial management is to restrict the patient’s movement and give them enough painkillers to make them comfortable. Upper humeral fractures can be managed conservatively if not displaced but if the greater tuberosity is fractured then an injury to the rotator cuff must be considered, more common in older people, injuries with high forces involved and where there is a lot of displacement. The typical treatment is a collar and cuff sling, allowing the elbow to hang in mid air and keep the humerus in line. Shaft fractures may be managed by humeral bracing.
Displaced three or four part fractures typically require surgery, referred to as ORIF (open reduction internal fixation) and this is more likely in younger people. Older people may have a poorer result in terms of pain and movement so may have surgical replacement of the head of the arm bone. Plating and nailing is usually unnecessary for shaft fractures as they heal well normally. The side effects of humeral fractures include nerve injury in shaft fractures, adhesive capsulitis and avascular necrosis of the head of the humerus. Healing occurs in six or eight weeks and older people may never regain full movement of the shoulder.
Physiotherapy for Shoulder Fractures
Initially the physio assesses the arm, asking the patient about their pain level as this varies greatly, examining the swelling and bruising of the arm. The physiotherapist then checks the available range of movement of the shoulder, elbow, forearm and hand. Any muscle weakness and sensory loss is noted as this may denote nerve damage. If not operated on, a sling is continued with and if the fracture is not too painful or severe, early exercises are started by the physiotherapist. Pendular exercises, with the patient bending over at the waist, are important in the early stages as they allow movement of the shoulder joint without much force.
Three weeks after the fracture bone healing will be well under way so the physiotherapist will instruct the patient in auto-assisted exercises, using the other arm, to help reduce stress on the injury. Unassisted exercises are the next step as the arm becomes stronger, to practice lateral and medial rotation and flexion. At six weeks the bone will be clinically sound so the physio can progress to more vigorous movements with resistance and gentle end-range stretching. Joint mobilisations can be useful to free up the sliding and gliding movements of the joint and strengthening and joint range work continued with Theraband.
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