Arch Hand Microsurg Search

CLOSE


Arch Hand Microsurg > Volume 23(4); 2018 > Article
Archives of Hand and Microsurgery 2018;23(4):239-247.
Published online December 1, 2018.
DOI: https://doi.org/10.12790/ahm.2018.23.4.239   
Reduction Loss after Extension Block Kirschner Wire Fixation for Treatment of Bony Mallet Finger
Byungsung Kim1, Jae-Hwi Nho2, Ki Jin Jung3, Keonhee Yun1, Eunseok Park1, Sungyong Park4
1Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, Bucheon, Korea.
2Department of Orthopedic Surgery, Soonchunhyang University Seoul Hospital, Seoul, Korea.
3Department of Orthopedic Surgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea.
4Department of Orthopedic Surgery, Seogwipo Medical Center, Seogwipo, Korea. haruki0@naver.com
Received: 24 July 2018   • Revised: 14 September 2018   • Accepted: 17 September 2018
Abstract
Purpose
We investigated occurrence of reduction loss after extension block (EB) Kirschner wire fixation or additional interfragmentary fixation (AIF) and clinical results including extension lag of the distal interphalangeal joint for treating bony mallet finger.

Methods
Forty-six patients were included with a mean follow-up of 28 months (range, 12–54 months). Twenty-seven patients were treated with EB K-wire fixation (Group A) while 19 patients were treated with AIF (Group B). We checked radiologic factors, such as amount of articular involvement, volar subluxation, mallet fragment angle, reduction loss, range of motion including extension lag, and functional outcomes using Crawford's criteria.

Results
Reduction loss occurred in eight patients (17%). Differences in mean extension lag, age, preoperative volar subluxation and mallet fragment angle between patients with reduction loss and those with reduction maintaining were significant. However, there were no significant differences in gender, hand dominance, amount of articular involvement, AIF, or further flexion between reduction loss and reduction maintaining. As for patterns of displacement, there was a significant relationship between gap or step-off and extension lag. Using Crawford's evaluation criteria, functional outcomes were excellent in 31, good in 10, fair in 3, and poor in 2 patients.

Conclusion
Reduction loss should be careful in older age, smaller mallet fragment angle and preoperative volar subluxation.
Key Words: Mallet finger, Extension block, Additional interfragmentary fixation, Reduction loss
 


About
Article and topics
Article category

Browse all articles >

Topics

Browse all articles >

Browse articles
Editorial policy
For contributors
Editorial Office
St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, 93 Ji-dong, Paldal-gu, Suwon 16247, Korea
Tel: +82-31-249-7186    Fax: +82-31-254-7186    E-mail: journal@handmicro.org                

Copyright © 2020 by Korean Society for Surgery of the Hand, Korean Society for Microsurgery, and Korean Society for Surgery of the Peripheral Nerve. All rights reserved.

Developed in M2community

Close layer
prev next