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Archives of Orthopaedic and Trauma Surgery
Published in: Archives of Orthopaedic and Trauma Surgery 11/2014

01-11-2014 | Trauma Surgery

Locked tension band wiring using ring pins for patellar fractures: a method of minimising implant migration

Authors: Min Bom Kim, Young Ho Lee, Woo Cheol Shin, Goo Hyun Baek

Published in: Archives of Orthopaedic and Trauma Surgery | Issue 11/2014

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Abstract

Background

A modified K-wire attached with ring (ring pin) was used to treat a displaced patellar fracture, and the ring pin was locked with tension band wiring. The purpose of this study was to evaluate the surgical outcome of this method with respect to its procedural safety.

Methods

The authors retrospectively reviewed 36 patients treated for a displaced patellar fracture and assessed bone union, fixation failure, postoperative pain, range of motion, and incidence of hardware removal. Clinical outcome was evaluated using the Böstman scoring system. The mean follow-up period was 27 (range 13–47) months.

Results

Bony union was achieved in all patients. No fixation failure and pin migration were detected. Hardware was removed in three cases (8.3 %). Reasons for removal were pain in one case and vague discomfort in two cases. The average Böstman scores at 12 months postoperatively were 29.6, with 34 (94.4 %) patients graded as excellent. The average active flexion of the knee joint was 130.4° (range 125°–150°), with an average flexion contracture of 3° (range 0°–10°).

Conclusions

This implant could facilitate satisfactory fixation, restore the integrity of the extensor mechanism, and reduce the possibility of implant migration and implant-related discomfort.
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Metadata
Title
Locked tension band wiring using ring pins for patellar fractures: a method of minimising implant migration
Authors
Min Bom Kim
Young Ho Lee
Woo Cheol Shin
Goo Hyun Baek
Publication date
01-11-2014
Publisher
Springer Berlin Heidelberg
Published in
Archives of Orthopaedic and Trauma Surgery / Issue 11/2014
Print ISSN: 0936-8051
Electronic ISSN: 1434-3916
DOI
https://doi.org/10.1007/s00402-014-2071-z

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