Delay in the diagnosis of posterior shoulder dislocation is common. We present two such cases treated satisfactorily by rotation osteotomy of the surgical neck of the humerus and discuss the indications for this procedure

1. A brief summary is given of the literature on patients with a dislocated hip and a fractured femur on the same side. 2. One further patient is reported, treated by closed reduction of the hip and the fracture. 3. A warning is given on the frequency with which the dislocation is not diagnosed in this double injury

1. Paralytic dislocation of the hip in spina bifida generally requires reduction and iliopsoas transfer. The muscle transfer ensures that the hip remains reduced, lessens the need for calipers and prevents progressive flexion deformity. In addition, varus and rotation osteotomy of the femur and innominate osteotomy are sometimes required. Varus and rotation osteotomy alone is indicated if the psoas is not strong enough for transfer. The age for reduction of dislocated hips and muscle transfer has been reduced to eight months as experience and confidence has been gained. 2. Flexion deformity is best prevented by early iliopsoas transfer. An anterior release operation is occasionally indicated when there is flexion deformity and a weak psoas muscle. This procedure, alone or supplemented by extension osteotomy, may be necessary to correct severe flexion deformity in children seen late. 3. Lateral rotation deformity of the hip may be caused by unbalanced iliopsoas action or the unbalanced action, or contracture, of the short lateral rotator muscles. If the deformity is sufficient to make the gait bizarre, or if it is difficult to fit a caliper, then soft-tissue operations as described are of value. 4. Abduction deformity can be corrected by division of the unopposed or contracted abductors

The clinical details of six patients who developed spontaneous dislocations in the foot or ankle are presented. All were shown to have diabetic neuropathy. This previously unreported condition can occur with a short history of diabetes. Some cases can be managed without operation, though arthrodesis probably offers the best chance of obtaining a stable foot of satisfactory shape

Dislocation is the most frequent serious complication following total hip replacement for subcapital femoral fracture. We report a prospective study, using matched groups, which compared the range of hip movement following hip replacement for arthritis and for fracture. The range of movement was significantly greater in the fracture group. We suggest that this is a predisposing factor for dislocation

We report 13 patients with missed bilateral facet dislocation of the lower cervical spine who subsequently developed severe spinal-cord involvement. There were more women and the patients were older than in most groups with spinal injury. The commonest cause was a fall, and paralysis appeared from six to 48 hours after injury in most patients. Ten patients made some recovery after late reduction but three remained totally paralysed. We discuss the pathogenesis of the late cord lesion and the reasons for delay in diagnosis

Of a consecutive series of 117 one-year-old infants with 130 established dislocations of the hip, 11% failed to respond to primary surgical treatment. Genetic and iatrogenic factors accounted for half the failures. There were no obvious causes in the remainder, though a few had the superficial stigmata of spinal dysraphism, and by two years of age, most of the group had developed a lateral rotation posture of the affected leg associated with a relatively smaller foot on that side. Radiologically, the femoral head had drifted and rotated laterally out of the surgically deepened acetabulum, causing persistent subluxation. Although there was no clinical evidence of sensory or motor denervation, sensory spinal evoked potential tests revealed the presence of neurological deficits in the majority of patients in this group

Traumatic posterior dislocation of the sternoclavicular joint is an unusual injury. We report a rare, late complication in the form of a thoracic outlet syndrome. Resection of the first rib resulted in prompt and complete resolution of the symptoms and would appear to be the appropriate treatment, avoiding the complications associated with resection of the clavicle

The clinical and radiological state of the hips of a group of children with cerebral palsy treated without operation is compared with that in a group treated by operation to correct adduction and flexion deformity and to obtain balanced action in the hip muscles. In the first group, 11 per cent of hips were dislocated, 28 per cent subluxated, 46 per cent dysplastic and 15 per cent normal. In the second group no hip was dislocated, 13 per cent were subluxated, 35 per cent dysplastic and 52 per cent normal. Surgical intervention is indicated clinically for a range of abduction diminishing to less than 45 degrees and–on radiological criteria–for early dysplastic changes, especially a break in Shenton's line, irrespective of the patient's age, severity of involvement or neurological maturity. Prevention of subluxation or dislocation improves function and diminishes the liability to develop a painful hip in adolescence or early adult life

In order to treat painful subluxation or dislocation secondary to cerebral palsy, 11 patients (12 hips) underwent combined femoral and Chiari pelvic osteotomies with additional soft-tissue releases at a mean age of 14.1 years (9.1 to 17.8). Relief of pain, improvement in movement of the hip, and in sitting posture, and ease of perineal care were recorded in all, and were maintained at a mean follow-up of 13.1 years (8 to 17.5). The improvement in general mobility was marginal, but those who were able to walk benefited the most. The radiological measurements made before operation were modified afterwards to use the lateral margin of the neoacetabulum produced by the pelvic osteotomy. The radiological migration index improved from a mean of 80.6% (61% to 100%) to 13.7% (0% to 33%) (p < 0.0001). The mean changes in centre edge angle and Sharp’s angle were 72° (56° to 87°; p < 0.0001) and 12.3° (9° to 15.6°; p < 0.0001), respectively. Radiological evidence of progressive arthritic change was seen in one hip, in which only a partial reduction had been achieved, and there was early narrowing of the joint space in another. Painless heterotopic ossification was observed in one patient with athetoid quadriplegia. In seven hips the lateral Kawamura approach, elevating the greater trochanter, provided exposure for both osteotomies and allowed the construction of a dome-shaped iliac osteotomy, while protecting the sciatic nerve

1. Three cases of recurrent dislocation of the patella due to abnormal attachment of the ilio-tibial tract are described. 2. The nature of the abnormality and surgical management are discussed

Four cases of posterior dislocation of the shoulder at birth in association with obstetric brachial plexus palsy are presented. Review of the literature suggests that this association is not generally recognised. All cases were diagnosed late; two were treated by open reduction, one by humeral osteotomy and one managed conservatively

Four cases of arterial damage resulting from closed posterior dislocation of the elbow are described. Two of these have been successfully treated by conservative methods and two by vein graft to the damaged artery. Sixteen previous cases are detailed and the management of this uncommon complication of dislocated elbow is discussed

Nine children with chronic post-traumatic dislocation of the head of the radius were treated by an osteotomy of the ulna with over-correction of the angular deformity and with elongation of the bone. Satisfactory results were obtained in eight cases, the only poor outcome following a three-year delay between the initial injury and the reposition. The interosseous membrane of the forearm appeared to be the most important structure in maintaining the corrected position of the radial head

1. The pathogenesis of recurrent anterior dislocation of the shoulder has been studied at operation and by experiments on cadavers. 2. Lesions of the subscapularis muscle leading to lengthening and laxity have been demonstrated. 3. This lengthening is the prime factor in producing instability of the shoulder; capsular and bony defects are no more than subsidiary causes. 4. Good results have been obtained by a procedure based on this theory of etiology

We have reviewed 36 patients who had recurrent anterior dislocation of the shoulder after a previous anterior repair and analysed the various causes of failure. It was found that failure could have been avoided in virtually all of the patients by correct pre-operative diagnosis, selection of the appropriate operation and its proper execution. The further management of these patients is described and suggestions are made as to means of reducing the incidence of failure after primary operation

Computerised tomography is useful in the diagnosis of abnormalities of the hip in children, particularly in assessing the size and shape of the acetabulum, the position and congruity of the femoral head relative to the acetabulum, and the degree of femoral anteversion or retroversion. It is most useful when limited hip movement and previous operations preclude adequate clinical examination and assessment by routine radiographic techniques. It is not recommended for routine use in screening congenital dislocation of the hip or in diagnosis or follow-up of Perthes' disease or slipped capital femoral epiphysis

1. A specially designed splint is described with which it is possible to maintain the reduction of a paralytic dislocation in a child with spina bifida cystica. The results of its use in a series of thirteen cases are recorded. 2. It is suggested that all such children presenting in the first year of life, in whom the power of the flexor and adductor muscle groups is preserved, should be treated initially in this way until the prognosis for the individual can be accurately assessed. 3. The theoretical implications of the findings are discussed

We report the replacement of 42 hips in 34 adults with untreated congenital dislocation. We used Charnley low friction implants, cementing the cup at the level of the true acetabulum after deepening and enlarging it by our own technique of cotyloplasty. Results were evaluated in 38 hips after a mean of 5.5 years. All the patients showed marked improvement, with no infection and, as yet, no late revision. The technical difficulties of the operation and the complications are discussed

The treatment of acromioclavicular injuries is controversial; few studies document the late results. We have reviewed 53 patients about five years after conservative management, in nine for subluxation and 44 for dislocation. Subjective and objective results were satisfactory in all cases except for one with painful subluxation, who was the only patient to change her occupation because of the injury. At review, joint stability was demonstrated by improvement in position and by the very small increase in the coracoclavicular gap on stress radiographs