J Korean Foot Ankle Soc JKFAS Journal of Korean Foot and Ankle Society 1738-3757 2288-8551 Korean Foot and Ankle Society 10.14193/jkfas.2019.23.3.116 Original Article Surgical Treatment of Calcaneal Fractures of Sanders Type II and III by A Minimally Invasive Technique with 6.5 mm Cancellous Screw Oh Yong Seung * Lee Kyung Ho Kim Jung Ho https://orcid.org/0000-0002-4388-7196 Lee Myoung Jin Department of Orthopedic Surgery, Dong-A University College of Medicine, Busan, Korea. Department of Orthopedic Surgery, Good Samsun Hospital, Busan, Korea. Corresponding Author: Myoung Jin Lee. Department of Orthopedic Surgery, Dong-A University College of Medicine, 32 Daesingongwon-ro, Seo-gu, Busan 49201, Korea. Tel: 82-51-240-2757, Fax: 82-51-254-6757, tynitus@dau.ac.kr 09 2019 17 09 2019 23 3 116 120 26 08 2019 02 09 2019 03 09 2019 Copyright © 2019 Korean Foot and Ankle Society 2019 Korean Foot and Ankle Society This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Purpose

This study evaluated the clinical and radiological results of 6.5 mm full threaded cancellous bone screw fixation of calcaneal fractures.

 Materials and Methods

Thirty seven patients diagnosed with Sanders type II or III calcaneal fractures, who underwent open reduction and internal fixation with a 6.5 mm full threaded cancellous bone screw between August 2014 and August 2017, were analyzed. Both the preoperative and postoperative Böhler angle and Gissane angle were measured radiographically. American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot scale on the final follow-up were also assessed.

 Results

The mean age of the patients was 52.7 years and the mean follow-up period was 29.5 months. In the Sanders classification, type II and III were 16 and 24 cases, respectively. The Böhler and Gissane angles improved from 21.2° and 122.6° preoperatively to 21.6° and 120.3°, respectively, in the postoperative radiographs. All cases achieved bony union, and the AOFAS ankle-hindfoot scale was 90.7 and 91.3 in Sanders type II and III, respectively, at the final follow-up.

 Conclusion

The treatment of calcaneal fractures using a 6.5 mm full threaded cancellous bone screw can reduce the complications with minimally invasive surgery and achieve firm fixation.

 Calcaneus 6.5 mm cancellous screw Full threaded screw

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Values are presented as mean±standard deviation. There was no statistical significant differences between groups with respect to the examined variables, p>0.05.

*Comparison between preoperative and postoperative Böhler and Gissane angles. †Comparison bestween postoperative and final follow-up Böhler and Gissane angles.

 Comparison among Preoperative, Postoperative and Final Follow-up Calcaneal Width and Height

Values are presented as mean±standard deviation.

*Comparison between preoperative and postoperative Calcaneal width and height. †Comparison bestween postoperative and final follow-up Calcaneal width and height.