Bone marrow ill-defined hyperintensities with tarsal coalition: MR imaging findings.

Introduction: To report the occurrence and pattern of ill-defined subchondral hyperintensities on Magnetic Resonance (MR) imaging in patients with talocalcaneal coalition (TCC).

Methods And Material: MR imaging of both feet was performed in 10 consecutive patients with 14 TCCs. There were eight males and two females with ages ranging from 9-52 years (mean 25 years).

Percutaneous nailing in the management of osteogenesis imperfecta.

Marked deformities of the skeleton may develop in the severe form of osteogenesis imperfecta. Internal fixation can be effective in the treatment and prevention of fractures and deformities. Eight years ago, axial correction of deformities of the femora and tibiae by manual osteoclasis was carried out in a 7 year old girl in whom osteogenesis imperfecta had produced severe bowing of the long bones of the legs.

The use of computed tomography to quantitate bone formation after distraction epiphysiolysis in the rabbit.

A study of limb lengthening by distraction epiphysiolysis in the rabbit tibia is presented. For this purpose a special external distraction device was developed, which allowed 10 mm lengthening of the leg. Bone formation in the distraction zone was quantified by means of computed tomography.

An intramedullary instrument to align bone fragments in closed Küntscher nailing.

Internal fixation of fractures of the shafts of long tubular bones by intramedullary nailing has become established worldwide. It is an efficient and successful procedure. Closed nailing has several advantages, but the technique is often difficult and sometimes impossible if reduction is unsuccessful.

Technique of torsion measurement of the lower extremity using computed tomography.

Axial CT is the most accurate and convenient technique for the measurement of lower limb torsion; its accuracy is equal to that of cadaveric skeletal measurement. Both extremities are examined simultaneously, and the comparison of the right and the left leg provides the most important value. The torsion angulation is obtained directly by superimposing the magnified image of each scan on the other.

A new technique for the reduction and stabilisation of severe spondylolisthesis. A report of nine cases.

A one stage operation by the posterior route has been carried out in a series of nine patients for the reduction and fusion of severe spondylolisthesis and spondyloptosis. For this purpose special instruments have been designed to exert a controlled force on the displaced vertebra in two perpendicular directions. Technical details of the procedure are reported.

Reduction and stabilisation of severe spondylolisthesis. A report of three cases.

A modification of a previously reported one-stage technique for reduction and stabilisation of severe spondylolisthesis using a posterior route is described. Reduction is obtained by inserting Harrington rods to lift L5 vertically out of the pelvis and two double-threaded screws to pull it backwards. After reduction the rods are taken away and stabilisation achieved by means of screws and a sacral bar.

Treatment of severe slipped capital femoral epiphysis by trapezoidal subcapital resection osteotomy-a review of nine cases.

Ten subcapital resection osteotomies were performed in nine patients with severe slipped capital femoral epiphysis. The risks of this operation are discussed and the operative technique is described in detail. In one patient postoperative chondrolysis of the hip joint developed, which resulted in a stiff but painless hip.

A new technique for the reduction and stabilisation of severe spondylolisthesis. A report of two cases.

The different methods described in the literature for the reduction of severe spondylolisthesis are reviewed. The case histories of two girls with neurological deficits in their legs due to Grade IV spondylolisthesis are described. Reduction and fusion by the posterior route in a one-stage operation were performed on these patients.

Instability of the proximal tibio-fibular joint.

The proximal tibio-fibular joint consists of a joint cavity surrounded by a joint capsule (diarthrosis) forming a rather rigid joint. In patients who complain of pain and instability in the knee, the cause may sometimes be found in laxity of the proximal tibio-fibular joint. In these cases the abnormal movements of the fibular head are palpable and visible and can be demonstrated on X-ray films.

Resection and reconstruction for bone tumours.

For the surgical treatment of tumours in long bones a technique in which the resected bone segment is autoclaved and replaced is described. The results in three patients who had undergone this operation 7 to 11 years previously, one for chondrosarcoma and two for giant cell tumour, are reported. In all three cases sound union has been achieved.