Abstract
Introduction Forearm-based splints have been traditionally used for extensor pollicis longus (EPL) tendon repairs for zones T II–T V (T is used to represent thumb extensor tendon zones). Limited literature exists on hand-based splinting in the rehabilitation of zone T II EPL tendon repairs. This retrospective review of five case studies highlights the anatomical justification and the outcome of rehabilitation of zone T II EPL surgical repairs using a static hand-based thumb extension splint. Methods In this study, five patients were retrospectively reviewed. All patients attended hand therapy for initial treatment within three days postoperatively. The postoperative interphalangeal joint mobilization regimen utilized in this study was early active motion (EAM). Outcomes measured in the study were reliable and valid, including goniometry measurement at week 4, week 6 and week 8 postoperatively for range of motion, total active motion (TAM), Dargan's criteria assessing extensor lag and White's assessment of interphalangeal joint range of motion. Results The results demonstrated that a hand-based splint did not create undue stress on the EPL tendon repair, as there was no incidence of rupture. Hyperextension of EPL was within 8° compared with the non-injured thumb. ‘Excellent’ and ‘good’ categories were achieved when applying TAM criteria, White's assessment and Dargan's criteria. Conclusion A hand-based splint with an EAM regimen is a viable treatment option for zone T II EPL surgical repairs instead of a long forearm-based splint. Further research is warranted with a larger sample and using a control group.
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