Additive hindfoot arthrodesis for rheumatoid hindfoot disease: a clinical study of patient outcomes and satisfaction.

Advanced rheumatoid hindfoot disease causes significant pain and disability. Hindfoot arthrodesis is a useful procedure but is often overlooked as a treatment option. The objective of this study was to report the improvements in patients' health, pain, functional ability and satisfaction following this procedure. Thirty-seven patients with rheumatoid arthritis (RA) were recruited from the outpatient clinic and underwent 42 hindfoot arthrodesis procedures by a single surgeon. Outcome measures were SF12 score, Manchester-Oxford Foot Questionnaire index score, visual analogue pain score and satisfaction scores, as well as radiographic assessment. Assessment was undertaken at the pre-admission clinic and at 6 and 12 months post-operatively. Statistically significant improvements were seen at 6 and 12 months in all measured outcomes. The union rate was 97.6%. The satisfaction rate was 92.5%. The complication rate was 7.1%. The functional benefit and outcome scores are comparable to those reported following hip and knee replacement in patients with RA. The findings of this study provide evidence that hindfoot arthrodesis should be considered a worthwhile surgical treatment in the rheumatoid patient with advanced hindfoot disease. Healthcare professionals involved in the management of these patients should be aware of the potential benefits of this procedure and refer early to a foot and ankle surgeon specialist when conservative treatment modalities have failed.