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OUTCOME OF PRIMARY TOTAL HIP AND KNEE ARTHROPLASTY IN PATIENTS AGED 90 AND OVER



Abstract

The proportion of very elderly people within the general population is steadily increasing.

These people, who often have coexisting medical problems and a limited life expectancy, may pose a dilemma for Orthopaedic Surgeons when referred for elective Orthopaedic procedures. The purpose of this study is to review the outcome of primary hip and knee arthroplasty in patients aged 90, and over, who are registered with the Trent Regional Arthroplasty Database.

Between 1990 and 2000, prospective data was collected on patients aged 90, and over, undergoing primary total hip and knee arthroplasty. Data collection was carried out on behalf of the Trent Regional Arthroplasty Audit Group. The present living status of these patients was confirmed using patient administrations systems of the hospitals involved.

Missing data was obtained from the Office for National Statistics. Those patients alive at one year were sent a simple satisfaction questionnaire regarding their operation.

144 patients underwent 149 hip or knee arthroplasty procedures over this eleven year period. The group comprised 122 (85%) females and 27 (15%) males. There were 93 (62%) total hip replacements and 56 (38%) total knee replacements. Ostcoarthritis was the predominant reason for surgery. There was only one intra-operative complication, comprising a fractured femur during a total hip replacement. 78 patients have died since their surgery. The crude mortality rate at one year was 11. 5%. The median survival was 34 months. 51% of the patients returned satisfaction questionnaires one year after the operation. From this group the satisfaction rates for hip and knee arthroplasty were 93. 6% and 92. 6% retrospectively.

With suitable pre-operative assessment, primary total hip and knee arthroplasty can be a successful operation with a high satisfaction rate. This is an age group with a high mortality regardless of surgery, and age alone should not be a determining factor in deciding whether a patient will benefit from primary hip or knee arthroplasty.

The abstracts were prepared by Mr Simon Donell. Correspondence should be addressed to him at the Department of Orthopaedics, Norfolk & Norwich Hospital, Level 4, Centre Block, Colney Lane, Norwich NR4 7UY, United Kingdom