Hand SurgeryA New Method to Control Tendon Tension in the Transfer of Extensor Indicis Proprius to Extensor Pollicis Longus RuptureLee, Jae Hoon MD; Cho, Young Joo MD; Chung, Duke Whan MD Author Information From the Department of Orthopedic Surgery, School of Medicine, Kyung Hee University Hospital at Gangdong, Kyung Hee University, Seoul, Korea. Received April 12, 2015, and accepted for publication, after revision June 1, 2015. Conflicts of interest and sources of funding: none declared. Reprints: Jae Hoon Lee, MD, Department of Orthopedic Surgery, School of Medicine, Kyung Hee University Hospital at Gangdong, Kyung Hee University, Seoul, Korea, 892 Dongnam-ro, Gangdong-gu, Seoul 134-727, Korea. E-mail: [email protected]. Annals of Plastic Surgery: December 2015 - Volume 75 - Issue 6 - p 607-609 doi: 10.1097/SAP.0000000000000593 Buy Metrics Abstract This study evaluated the outcomes of extensor indicis proprius (EIP) transfer based on varying degrees of thumb extension after EIP transfer and elongation of the EIP. A total of 24 cases with extensor pollicis longus (EPL) ruptures who underwent EIP to EPL transfer were analyzed prospectively. The EIP transfer was performed with neutral wrist positioning. In group I (12 cases), EIP and EPL were sutured on the thumb in neutral state at interphalangeal joint, and the mean EIP elongation of this group measured 0.2 cm (range, −0.5 to 0.5 cm). In group II (12 cases), EIP and EPL were sutured on the thumb in full extension state at interphalangeal joint, and the mean EIP elongation measured 0.7 cm (range, 0.5–1.5 cm). The mean follow-up period was 13.5 months. The 2 groups were compared based on thumb motion, grip strength, pinch power, and the Disabilities of the Arm, Shoulder, and Hand questionnaire score. Extension of the thumb at the interphalangeal joint was −5.2° in group I and 7.2° in group II, demonstrating statistically significant differences. No significant differences were found between the 2 groups in other parameters. In EIP transfer, thumb in extension after transfer and EIP elongation is recommended for restoring thumb extension at the interphalangeal joint. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.