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The Journal of Bone & Joint Surgery British Volume
Vol. 86-B, Issue 2 | Pages 225 - 231
1 Mar 2004
Fujii K Katoh S Sairyo K Ikata T Yasui N

Lumbar spondylolysis can heal with conservative treatment, but few attempts have been made to identify factors which may affect union of the defects in the pars. We have evaluated, retrospectively, the effects of prognostic variables on bony union of pars defects in 134 young patients less than 18 years of age with 239 defects of the pars who had been treated conservatively. All patients were evaluated by CT scans when first seen and more than six months later at follow-up.

The results showed that the spinal level and the stage of the defects were the predominant factors. The site of the defects in the pars, the presence or development of spondylolisthesis, the condition of the contralateral pars, the degree of lumbar lordosis and the degree of lumbar inclination all significantly affected union.


The Journal of Bone & Joint Surgery British Volume
Vol. 86-B, Issue 1 | Pages 113 - 115
1 Jan 2004
Masui F Yokoyama R Soshi S Beppu Y Asanuma K Fujii K

Amalignant peripheral nerve-sheath tumour developed in the right S1 nerve root in a man aged 30 causing back pain and sciatica. CT and MRI revealed a destructive tumour of the sacrum invading the retroperitoneal space. The tumour was not resectable with an adequate margin. Chemotherapy, consisting of high-dose ifosfamide followed by a combination of vincristine, doxorubicin and cyclophosphamide, was given with success. Malignant peripheral nerve-sheath tumours are thought to respond weakly to chemotherapy, but the response in our patient was complete.


The Journal of Bone & Joint Surgery British Volume
Vol. 85-B, Issue 8 | Pages 1146 - 1150
1 Nov 2003
Fujii K Henmi T Kanematsu Y Mishiro T Sakai T

Between 1995 and 1999, 12 patients aged 65 years or more (mean 70.2) with lumbar disc herniation, underwent partial laminectomy and nucleotomy. The results were compared with those of 25 younger patients aged between 20 and 40 years (mean 30.1), who underwent the same surgical procedure. The Japanese Orthopedic Association (JOA) score was used to assess the clinical outcome. The minimum follow-up was 12 months. The pre- and post-operative total JOA scores and the rate of improvement of the JOA score were not significantly different between the elderly (11.1, 24.3 points, and 74.1%), and the younger group (11.6, 26.4 points and 84.5%).

The results of this study indicate that the outcome of lumbar discectomy in elderly patients is as good as in younger patients.