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Digit Widget vs. Fasciectomy Alone for Severe Dupuytren's Contracture: A Matched Cohort Study of Surgical and Functional Outcomes
Krishna Unadkat, MS
1, Evani Patel, BS
2, Jay Patel, BA
2, Annika N Hiredesai, BA
2; Shelley S. Noland, MD
3(1)Mayo Clinic Alix School of Medicine, Scottsdale, AZ, (2)Mayo Clinic Alix School of Medicine, Phoenix, AZ, (3)Mayo Clinic, Phoenix, AZ
Background: The Digit Widget is a mechanical distraction device used to manage severe or recurrent Dupuytren's contracture involving the proximal interphalangeal (PIP) joint. It applies controlled skeletal traction via pins in the middle phalanx, generating torque that gradually lengthens contracted palmar tissues. The device is typically used in a staged approach: first to reverse deformity over several weeks, followed by surgical fasciectomy if needed. This method may improve soft tissue compliance, reduce neurovascular risk, and allow more complete correction in complex cases. Although gaining adoption, few studies have directly compared outcomes with conventional fasciectomy alone.
Methods: A subset of patients treated for Dupuytren's contracture at one institution (2005-2023) was reviewed. Twenty-two received Digit Widget distraction followed by fasciectomy; 22 underwent fasciectomy alone. Groups were matched by age and sex. Outcomes included pre-operative angle (Pre-PIP), post-operative angle (Post-PIP), contracture change (?PIP = Pre-PIP - Post-PIP), and Patient-Reported Outcome Measurement Information System (PROMIS) scores. Finger-level analysis included only PIP joints with both pre- and post-operative angles, yielding 13 Digit Widget (DW) fingers and 13 control fingers. Analyses were performed using Python (v3.12) with SciPy and Pandas libraries. Continuous variables were compared using t-tests or Mann-Whitney U tests. Categorical variables were assessed using chi-square or Fisher's exact tests (p<0.05).
Results: Post-operative PIP flexion-contracture angle was significantly larger in the Digit Widget cohort (30.2 ± 25.8°) than in controls (11.2 ± 13.2°; p = 0.023). Pre-operative deformity was greater in the Digit Widget group (63.8 ± 19.2° vs 53.4 ± 27.5°) but not statistically significant (p = 0.27). Mean contracture improvement (?PIP) was similar between groups (33.7 ± 15.1° vs 42.2 ± 31.2°; p = 0.38). PROMIS Upper-Extremity and Pain-Interference scores, available for two to eight patients per group, showed no significant differences (both p > 0.60).
Conclusion: In this preliminary matched analysis, Digit Widget distraction followed by fasciectomy achieved similar contracture correction to fasciectomy alone but resulted in a significantly larger final residual PIP contracture angle. While functional outcome data were limited, PROMIS scores did not differ meaningfully. These findings highlight the need for larger-scale studies with standardized documentation, complete finger-level tracking, and consistent patient-reported outcome collection to better define the role of preoperative skeletal distraction in managing severe Dupuytren's contractures.
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