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SA Orthopaedic Journal
versión On-line ISSN 2309-8309
versión impresa ISSN 1681-150X
Resumen
KOCH, O et al. Grip strength following total wrist arthrodesis using the same hand as reference: a prospective study. SA orthop. j. [online]. 2019, vol.18, n.4, pp.41-45. ISSN 2309-8309. http://dx.doi.org/10.17159/2309-8309/2019/v18n4a5.
INTRODUCTION: Many patients suffer from a decrease in grip strength due to various conditions of the wrist, including osteoarthritis. A stable painless wrist is essential for normal function of the hand. Many patients are offered a total wrist fusion to alleviate their pain. and increase their grip. There is a dearth of literature investigating the effect of total wrist arthrodesis on grip strength utilising the same side as a reference. METHODS: A prospective study was done to determine change in grip strength and patient-reported outcome measurements post-operatively as compared to same-side pre-operative values in subjects undergoing total wrist arthrodesis with a minimum follow-up of one year. Grip strength was measured pre-operatively and at least one year post-operatively using the Jamar® (Patterson Medical) dynamometer in the standardised method as part of set protocol. Functional outcomes were assessed by the patients completing Disabilities of Arm, Shoulder and Hand (DASH) scores, pre-operatively and at one-year follow-up. The differences in measures were assessed using a paired samples T-test, as well as percentage changes between measurements. RESULTS: Twenty-two patients were evaluated, with a mean age of 49.6 years (range 19-85). The mean follow-up was 27 months (12-52 months). The grip strength in the affected hand improved on average by 12.6 kg (p<0.001; CI 95% [7.7, 17.3]). The grip in the affected hand was 84.5% compared to the pre-operative value of the unaffected side (32.8 kg vs 38.8 kg; p<0.001). The DASH score improved by 27.8 points (p=0.1). CONCLUSION: Total wrist fusion remains a reliable procedure to restore a power grip at the expense of wrist movement. It is a suitable option for a high-demand patient with an isolated wrist problem Level of evidence: Level 3.
Palabras clave : wrist; fusion; grip strength; arthritis.