Bruce N. Summers

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Chronic pain at the donor site was reported by 25% of 290 patients who had undergone anterior lumbar spine fusion for low back pain. Donor site pain has characteristic clinical features, may be severely disabling and is stubbornly resistant to treatment. The highest prevalence was in patients who had a tricortical full thickness graft taken through a(More)
Shelf operations performed on 24 patients (27 hips) for late presentation of congenital hip dysplasia were evaluated. The mean age at operation was 14 years 9 months and the mean follow-up 16 years 8 months. Two-thirds of the hips had good clinical results at follow-up. Patients operated on under the age of 20 years and with little or no radiological(More)
This paper develops a general equilibrium model of the clearing and settlement of private payment instruments. Spatial separation, heterogeneous preference shocks and limited communication provide a role for private credit as a means of payment. Although this method could be applied to various settlement arrangements, the use of central bank deposit(More)
In a crossover experiment the authors investigated the effects of repeated weekly, 2-day, haloperidol drug holidays on serum haloperidol concentrations, mental status, and neuroleptic-induced movement disorders in seven chronic schizophrenic patients. Haloperidol concentrations decreased about 64% during the initial 36 hours of drug holiday and subsequently(More)
Paediatric post-traumatic cortical defects, although rare, are predominately seen affecting the distal radius following a greenstick or torus fracture. We review the literature and present a further two cases supported by CT and MRI. Images from an acute greenstick fracture are also presented to help understand the pathogenesis. Defects are typically(More)
STUDY DESIGN A prospective clinical and radiologic investigation of two groups of patients presenting with either acute back pain only or acute leg pain only, yet similar restriction in straight leg raising (SLR). OBJECTIVES To highlight a group of patients presenting with acute low back pain only, yet a restricted SLR normally associated with leg pain(More)
A 14-year-old girl with painful scoliosis was found to have an osteoid osteoma involving the body of the left seventh rib. Excision of the tumor was facilitated by intraoperative bone scanning that precisely located its position. Following surgery, preoperative pain was completely relieved and the spinal curvature had partially regressed. The importance of(More)
Patients with mechanical lower back pain not uncommonly present to clinicians with anxiety following a diagnosis of "Scheuermann's disease" based on a report of a plain radiograph of the lumbar spine. In most instances, the radiographs show features of lumbar Scheuermann's, rather than the classical adolescent thoracic kyphosis described by Scheuermann in(More)
The urine samples from two groups of Veteran's Administration patients newly admitted to general psychiatry units were screened in 1985 and in 1987-88 for abused drugs. The results were compared with urine samples from controls with similar age distributions admitted to an alcohol and drug abuse unit or to medical-surgical units. About 40% of all newly(More)
STUDY DESIGN Diagnostic study. OBJECTIVE To assess the construct validity of the flip test as a sign of nerve root tension. SUMMARY OF BACKGROUND DATA The flip test is commonly performed in patients with sciatica to confirm or otherwise nerve root tension evidenced by a restricted supine straight leg raise (SLR). Passive extension of the knee with the(More)