Forty-five patients with fractures of the tibial spine were reviewed 3 to 10 years after injury in order to determine the degree of residual laxity of the cruciate or collateral ligaments. After fractures which had been partially or completely displaced, some anterior cruciate laxity was evident, even if patients were asymptomatic. It was also found that an anatomical reduction did not prevent either laxity or some loss of full extension of the knee.

The late results of tarsometatarsal injuries in 33 patients have been reviewed. The average follow-up period was 15 years (range 11 to 20 years). Methods of treatment included cast immobilisation, and closed or open reduction with or without internal fixation. All patients noted diminishing symptoms after injury and all but six returned to their former occupation. Neither the initial fracture type nor the treatment had any apparent bearing on subsequent function; nor was there any correlation between radiographic assessment of the injury and the patient's symptoms.

We have reviewed the notes and radiographs of 57 patients with fractures of the proximal humeral epiphysis and examined 30 of them at 2 to 8 years after injury. Regardless of treatment the maximum shortening of the humerus was 2 cm and residual varus angulation was insignificant. Manipulation of a displaced, fresh fracture did not improve the final outcome with respect to humeral growth or function; and open reduction is very rarely indicated.

Forty-six children with Monteggia fracture-dislocations have been studied. The circumstances of the accident could rarely be recalled so that the mechanism of injury remains unclear. The study did, however, confirm the importance of conservative management of the injury in children; unlike the adult variety, this gave very satisfactory results. Our review also supports the classification into three basic types of Monteggia lesion according to the direction of displacement of the dislocated radial head. For simplicity, all other types, variations or equivalents can be regarded as belonging to these basic patterns; in particular we include those controversial cases in which the radiohumeral dislocation is combined with a fractured olecranon.

Spondylolysis occurring after a spinal fusion is considered to result from operative damage to the pars interarticularis on both sides. Fourteen cases are reported, and compared with the 23 cases which have previously been published. The defects are usually recognised within five years of fusion, and usually occur immediately above the fusion mass. Other contributory causes may be: fatigue fracture from concentration of stress; damage and altered function of the posterior ligament complex; and degenerative disc disease immediately above or below the fusion. Fusion technique is critical, since virtually all cases occurred after posterior interlaminar fusions. This complication is easily overlooked in patients with recurrent back pain after an originally successful posterior spinal fusion.