Study Design Systematic review Purpose To determine the optimal combination of motion protocol and orthotic treatment for the rehabilitation of proximal extensor tendon injuries (zones IV–VIII). Methods A systematic review of English-language randomized clinical trials and cohort studies investigating extensor tendon rehabilitation from 1960–2016 was conducted in MEDLINE, Embase, Cochrane, CINAHL, PEDro, and OTseeker. Outcomes of total active motion, grip strength, return to work, patient attrition and patient reported outcomes were compared. Results Eleven studies of predominantly average quality (1 low, 8 average, 2 high) were included in the final review. Results were difficult to compare due to differences in reporting. Early total active motion and final grip strength was greater with dynamic extension orthoses (191–214°; 35–38 kg/89% contralateral side) and relative motion orthoses (205–236°; 85–95% contralateral side) compared to static orthoses (79–202°; 23–34 kg/59% contralateral side). Four studies excluded patients who did not follow-up and loss to follow-up was 12–33% in the other studies. Patient reported outcomes were not comparable, as they were only included in three studies, and each used a different assessment tool. Conclusion Average quality evidence supports the use of EAM as the superior motion protocol but optimal orthosis to deliver EAM could not be determined. Prospective research should focus on patient reported outcomes and the design of orthoses that facilitate use of the EAM.
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