MRI signal changes are commonly found with myelopathy. The clinical significance of these signal changes in myelopathic patients remains debated. The purpose of this study was to perform a meta-analysis of the data to determine the effect of MRI signal change on pre-operative and post-operative Japanese Orthopaedic Association (JOA) scores and on recovery rate following surgery. A comprehensive review of the literature was performed to identify all published studies that provided data on the presence of MRI signal change as well as JOA scores in patients with cervical spondylotic myelopathy. Data was tabulated and JOA scores were normalised to the 17-point scale. T-tests were performed to determine if there were significant differences between pre-operative and post-operative JOA scores in patients with or without MRI signal change. The recovery rate was calculated for all patients undergoing surgery. T-tests were performed to determine if significant differences occurred in recovery rate in patients with or without MRI signal change.Introduction
Methods
In 1976 the senior author presented to the Associations the results of patellectomy with satisfactory results in less than 50% of cases. In 1989 with the increasing success of TKR we started a prospective study of the Lubinus prosthesis for patellofemoral arthritis. After 4 years results were not satisfactory. The main causes of failure were mal-tracking and instability leading to polythene button wear, and arthritic disease progression. A new prosthesis was designed in 1996 to correct these problems. We have prospectively recorded the results of a consecutive cohort of 537 Avon arthroplasties. The outcomes have been assessed with survivorship, pain, Oxford and WOMAC scores. We have identified 24 patients from our own series and from tertiary referrals who have persistent pain, due to technical error rather than arthritic disease progression.Introduction
Methods
