Relative motion splints versus metacarpophalangeal joint blocking splints in the management of trigger finger: Study protocol for a randomized comparative trial
ABSTRACT
Hand-based metacarpophalangeal joint (MCPJ) blocking splints are commonly used for trigger finger (TF), but finger-based relative motion (RM) splints are also used without evidence. This trial aims to compare the effectiveness, function, occupational performance, and wearability of MCPJ blocking and RM splints after 6 weeks of TF management.
METHODS AND ANALYSIS
The trial involves 36 individuals assigned to either RM or MCPJ blocking splint groups. Participants must be aged ≥21 years and diagnosed with TF involving ≥1 finger. Outcome measures include stage of stenosing tenosynovitis, number of triggering events, pain levels, splint comfort and satisfaction, arm and hand disabilities, and occupational performance. The affected finger(s) MCPJ splint position is determined using the RM pencil test. Analysis will compare primary and secondary outcomes using mixed-effects ANOVA.
RESULTS
Recruitment and data collection are ongoing.
DISCUSSION
RM splints control tendon excursion and reduce passive tendon tension while allowing unencumbered finger motion and hand function. This study implements a function-focused and patient-centered approach with partial blinding of assessors and participants.
CONCLUSION
This study aims to provide evidence for the implementation of RM splints to manage adults with TF.
TRIAL REGISTRATION: Clinical trial registration This trial is registered with ClinicalTrials.gov (NCT05763017).
