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Biomedical subjects

S Olerud

Publications and source records attributed to S Olerud.

At least 55 records · Page 3Linked to original sources
PubMed1984

Motion of the pubic symphysis in pelvic instability.

Pelvic instability is a term widely used to describe a clinical entity characterized by pain localized to the pubic symphysis and/or sacroiliac joints. The pain often radiates down the leg. Hypermobility of the pelvic joints has been suggested as the cause of pain. Apart from several clinical stress tests, attempts at establishing objective evidence of such mobility have mainly consisted in radiologic measurement of motion of the pubic symphysis by a method which allowed only vertical movement to be recorded (5). In the present study symphyseal mobility was measured by an electromechanical method by which direct interosseous movement could be recorded in three directions and two different planes. Measurements were performed in a series of 15 patients with a tentative diagnosis of pelvic instability and the results compared to the results of radiologic measurement and to the normal values obtained in an earlier study of healthy volunteers (31). The results of this study would seem to refute the theory of symphyseal hypermobility being pathognomonic of so-called pelvic instability. It has moreover shown that radiologic measurement may be used for rough screening purposes, but is not sufficiently reliable for more exact measurements.

Adult↗
PubMed1984

Ender nailing of pertrochanteric fractures. Results at follow-up evaluation after one year.

One hundred twenty-seven patients with pertrochanteric femoral fractures were transfixed with the Ender nail. The mean age of the patients was 78.9 years. Thirty-five percent of the fractures were of the stable type, and 65% were of the unstable type. All patients had clinical and radiologic follow-up examinations every three months for one year. Successful closed reduction was achieved in 97.6% of the patients. Perioperative supracondylar femoral fractures occurred in two patients. The overall stay in hospital was 19 days. Technical failures occurred early in five patients, and late manifestations of major technical failures occurred in four patients. The average time to fracture union was 18 weeks. The primary mortality rate was 7%. From one to 12 months, the mortality rate increased to 15%. Of the 108 patients surviving the first year, 86% regained their prefracture activity-of-daily-living status. Ninety-six percent of the surviving patients returned to their prefracture residence, a very satisfactory outcome of a condition often observed as a terminal illness.

Activities of Daily Living↗
PubMed1984

Hip arthroplasty with an extended femoral stem for salvage procedures.

The problem of treatment of a combination of failed hip arthroplasty secondary to resorption, osteoporosis, osteolysis, or fracture is unsolved. Twenty-seven such complicated hips, including four with previous infection, were treated by a femoral prosthesis driven into an intramedullary nail. The goal of stability, allowing immediate mobilization, was attained in virtually all patients. The oldest was 84 years of age and the mean age was 69.3 years. In the early postoperative period, one patient died of pulmonary embolism and one of myocardial infarction. Two infections were treated 25 and 11 months after implantation; these patients were free from pain and showed no signs of loosening of the implant. The mean time in the hospital for the infected patients was 60 days and for the noninfected patients was 23 days. Among 14 patients who were observed for at least ten months after surgery, freedom from pain was achieved in eight, significant alleviation of pain in five, and slight improvement in one. Five patients also became completely free from dependence on walking aids; seven used one or two canes. Two patients were dependent on crutches. Discrepancy in the length of the lower limbs was noted in seven patients. Six patients showed 1 cm shortening and one patient 2 cm. In six patients the Trendelenburg sign was negative, and in only three patients was it clearly positive. The mean Harris Hip Score in 14 patients observed for more than ten months after surgery was 82. Intramedullary nailing combined with a femoral component in total hip arthroplasties, where defects or fractures of the femur have occurred, give good fixation of the implant components and a satisfactory functional result.

Adult↗
PubMed1983

External fixation of severe open tibial fractures with the Hoffmann frame.

Extensive experience with stable external fixation of open tibial fractures has confirmed the observation that this method promotes healing of skin and soft tissue damage, reduces the risk of infection, and facilitates the treatment of patients with multiple injuries. In cases of very severe open fractures the method seems to be the treatment of choice and can reduce the frequency of amputation. Recently, complete long-term follow-up results showed that healing times can be reduced if the period of rigid external fixation is reduced. Functional end results after stable external fixation compare favorably with results of internal fixation with AO plates.

Accidents, Traffic↗
PubMed1982

Treatment of patients with unstable fractures of the thoracic and lumbar spine: a follow-up study of surgical and conservative treatment.

A follow-up study was made to compare the effect of surgical reduction and stabilization of unstable vertebral fractures with the results of conservative treatment. Twenty patients treated by conservative methods and 18 patients subjected to surgical stabilization were analyzed with respect to period of immobilization, healing time, degree of residual deformity, neurological restitution and incidence of complications. The wide variety of initial impairment did not permit any definite conclusions with regard to neurological restitution. In all other respects, however, surgical stabilization produced better results as reflected by shorter periods of immobilization, hospitalization and rehabilitation, less residual deformity, and a lower incidence of complications. It may be concluded therefore that surgical treatment of unstable vertebral fractures may be of benefit to both patients and society.

Accidents, Traffic↗
PubMed1982

Wagner resurfacing hip arthroplasty: preliminary results.

Resurfacing arthroplasty according to Wagner was used in 40 hips (31 patients) with coxarthrosis or arthritis. The severe, disabling preoperative pain was eliminated in all patients. There was a considerable increase in range of movement, and the functional results were very good. Of the 24 patients previously in employment but disabled by their hip condition, 22 have returned to their former occupations. Complications occurred in only four cases.

Adult↗
PubMed1981

Spinal pseudarthrosis with paraplegia in ankylosing spondylitis. A case report.

Destructive lesions of vertebral bodies in ankylosing spondylitis (AS) have for a long time been regarded as inflammatory changes, sometimes of tuberculous etiology. However, observations during recent years have established that these destructions in fact are non-unions after fractures. A case of spinal pseudarthrosis with paraplegia in a patient with advanced AS is presented. After combined anterior and posterior decompression as well as fusion using plate fixation, the neurological symptoms regressed completely and early mobilization of the patient was possible.

Bone Cysts↗
PubMed1979

Internal fixation of fractures of the neck of the femur using von Bahr screws and allowing immediated weight bearing: a prospective clinical study.

This article presents the results of von Bahr screw fixation in 103 patients, allowing immediate weight bearing. After a follow-up period of 1 year, a failure rate of 18% was recorded. Analysis of the series shows that the failures are due to inadequate reduction of the displacement during operation, especially when the head is in varus, and to bad positions of the screw. The high failure rate was not related to the initial displacement of the fracture.

Adolescent↗