We report the management of two children and 1 1 adults with paraplegia secondary to vertebral hydatidosis. Destruction of pedicles, posterior vertebral elements and discs as well as the vertebral bodies was common and all six patients with thoracic disease had involvement of adjacent ribs. The 13 patients had a total of 42 major surgical procedures; two patients died from postoperative complications and four from complications of the disease and paraplegia. All eight patients initially freated by laminectomy or anterior decompression alone relapsed within two years and seven required further surgery. Circumferential decompression and grafting gave the best results, six of nine patients being in remission an average of three years and six months later. The prognosis for such patients is poor; remission is the aim, rather than cure. Anthelminthic drugs may improve the prognosis, but radical surgery is likely to remain the keystone of treatment in the foreseeable future. The incidence of human infestation with Echinococcus granulosus is increasing, and the parasite is appearing in areas of the world previously free of it (Williams, Lopez, Adaros and Trejos 1971 ; Matossian, Rickard and Smyth 1977). We report the treatment and results of 13 patients with paraplegia due to vertebral hydatidosis.
This paper presents a short study of 17 cases of tuberculosis of the greater trochanter seen during a period of 19 years at the National Orthopaedic Institute in Tunis. The onset of the infection is slow with patients presenting at a mean of 7 years after initial symptoms. The diagnosis is confirmed by biopsy and culture of the organism. Management is based on treatment with antituberculous drugs, although surgical excision of the lesion is sometimes required. Successful resolution of the symptoms is usually achieved unless the hip joint becomes involved. Our patients showed good results at a mean follow up of 5 1/2 years.
Knee arthrodesis after tumor resection is a complex technique. Septic complications and mechanical failure are frequent regardless of the technique employed. They are related to the extent of bone sacrifice but also to that of soft tissues. The use of vascularised fibula alone and stabilisation by external fixation were the main shortcomings in this series. TYPE OF STUDY RETROSPECTIVE: Level IV.
Osteoid osteoma of the acetabulum can be expected to cause nonspecific symptoms of hip inflammation. In a sixteen year old girl, investigation by routine radiographs and a bone scan suggested a focus of inflammation with a nidus and sclerosis of the acetabulum and overgrowth of the head and neck of the femur. Removal of the lesion by an anterior approach with dislocation of the hip gave excellent results when seen after three years with a normal gait and normal hip motion.
We reviewed retrospectively the results of 28 hips (25 patients) after revision of the femoral component with use of a cemented stem, because of aseptic loosening. The mean duration of follow-up was 4.43 years (range 2-12 years). Over the course of the study period, repeat revision was done in 4 hips after an average of 4.45 years. Three hips had a repeat revision of the femoral component because of aseptic loosening and one for a deep infection. The rate of loosening of the femoral component was 32.4% (9 hips) at an average of 5.22 years. The 5-year survival rate was 76.9% with mechanical failure as end point; and 90% with rerevision of femoral component because of aseptic loosening as end point. The cement mantle was the principal factor, which was signiWcantly associated with a better survival rate of femur Wxation (P < 0.05). No correlation was noted between quality of bone loss at the time of revision, bone graft or the use of long stems, and the survival rate of femoral component. By improving the cementing technique and in selected patients, the use of cemented femoral stem could be a good alternative for aseptic loosening THA.
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