Knee Osteochondritis Dissecans Treated by the AO Hook Fixation System: A Four Year Follow-Up of an Alternative Technique
Ioannis P Pengas*, 1, 3, Angelos Assiotis 2, Michail Kokkinakis 4, Wasim S Khan 1, Paul Meyers 3, James Arbuthnot 5, Michael J Mcnicholas 6
Identifiers and Pagination:Year: 2014
Issue: Suppl 1
First Page: 209
Last Page: 214
Publisher ID: TOORTHJ-8-209
Article History:Received Date: 23/2/2014
Revision Received Date: 9/3/2014
Acceptance Date: 11/3/2014
Electronic publication date: 27 /6/2014
Collection year: 2014
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.5/) which permits unrestrictive use, distribution, and reproduction in any medium, provided the original work is properly cited.
Surgical fixation is recommended for stable osteochondritis dissecans (OCD) lesions that have failed nonoperative management and for all unstable lesions. In this study we set out to describe and evaluate an alternative method of surgical fixation for such lesions. Five knees with unstable OCD lesions in four male adolescent patients with open physes were treated with the AO Hook Fixation System. The outcome was evaluated both clinically and with three separate outcome systems (IKDC 2000, KOOS, Lysholm) at one and a mean four year follow-up. We demonstrated excellent clinical results in all patients. At four years, all scoring systems demonstrated statistically significant improvement when compared to the preoperative status. Our study suggests that the AO Hook Fixation System is an alternative method of surgical intervention with comparable medium term results with other existing modes of fixation and the added biomechanical advantage of the absence of distracting forces during hardware removal.