KẾT QUẢ TẠO HÌNH DỊ TẬT HAI NGÓN TAY CÁI BẰNG KỸ THUẬT BILHAUT-CLOQUET

Abstract

Introduction: Polydactyly (duplicate thumb) is the most common condition of extra fingers in Caucasians and Asians, occurring in approximately 0.8 to 1.4 per 1,000 births. Polydactyly results from the failure of the axial axis of the metacarpal disc to form and/or differentiate. The goal of ideal reconstruction for polydactyly thumbs is to create a functional thumb with a stable phalange, minimal scarring, and minimal nail deformity. The Bilhaut-Cloquet procedure involves combining parts of both thumbs. Patients and Methods: This was a non-control clinical intervention study. Patients diagnosed with polydactyly thumbs and using Bilhaut-Cloquet technique to reconstruct (with bilateral nail size asymmetry) were studied from 2018 to 2025. Patients underwent surgery using the same technique performed by the same surgical team. Follow-up assessments were conducted using the modified Tada, Horii, and Tien scales. Results: From 2018 to 2025, 20 patients with polydactyly thumbs underwent Bilhaut-Cloquet surgery with an average age of 7 (ranging from 1 to 31 years). Male/female ratio: 9/11. According to the Wassel classification, patients in types IV and II accounted for the highest proportion (40% and 25%, respectively). The average follow-up time after surgery was 31 months. Postoperative evaluation yielded good results according to the Tada score in 85% of cases, the Tien score in 83.3% of cases, and the Horii score in 100% of cases. Conclusion: The Bilhaut-Cloquet method is technically more challenging than the conventional extra fingers method. However, the technique yields desirable results, especially in cases of polydactyly thumbs with asymmetrical fingernail sizes.