Clinical and radiological outcomes of midfoot derotational osteotomy for midfoot-forefoot varus deformity.
BACKGROUND
Moderate to severe midfoot-forefoot varus deformities are commonly found in several conditions. However, few techniques are available to correct these deformities. So, we evaluated the clinical and radiological outcomes of patients who underwent midfoot derotational osteotomy to achieve plantigrade foot.


METHODS
From 2006 to 2014, 6 patients (7 feet) underwent midfoot derotational osteotomy. A visual analog scale (VAS) pain and the American Orthopedic Foot & Ankle Society (AOFAS) functional score were evaluated. Radiographic parameters, including tibiocalcaneal angle (TCA) and navicular height (NH), were assessed.


RESULTS
The mean patient age at surgery was 48.0 years (37-58). From before the operation to the final follow-up, the mean VAS score decreased from 6.5 (2-9) to 1.3 (0-4) and the mean AOFAS score improved from 42.7 (34-58) to 77 (68-87). All patients were satisfied with outcomes. The mean TCA significantly improved from 33.8° (9.9-66.7) to 12.7 (5.1-27.6) (p = 0.018)and the mean NH decreased from 46.7 mm (32.8-67) to42.6 (30.1-60.8) (p = 0.018).


CONCLUSIONS
Severe midfoot-forefoot varus deformities can be efficiently corrected by midfoot derotational osteotomy resulting in favorable clinical and radiological outcomes and high patient satisfaction.


METHODS
IV, case series.
Department of Orthopedic Surgery, Konkuk University School of Medicine, 4-12 Hwayang-dong, Gwangjin-gu, Seoul, 143-729, Republic of Korea. Electronic address: jungfoot@hanmail.net.
Hong-Geun
HG
Jung
Department of Orthopaedic Surgery, Myongji Hospital, 697-24 Hwajung-dong, Deokyang-gu, Goyang-si, Gyeonggi-do, 412-270, Republic of Korea. Electronic address: ronaki@naver.com.
Dong-Oh
DO
Lee
Department of Orthopedic Surgery, Military Manpower Administration, Daejeon, Republic of Korea. Electronic address: skyroost@naver.com.
Sang-Hun
SH
Lee
Department of Orthopedic Surgery, Konkuk University School of Medicine, 4-12 Hwayang-dong, Gwangjin-gu, Seoul, 143-729, Republic of Korea. Electronic address: eoms1234@naver.com.
Joon-Sang
JS
Eom
D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D005531:Foot Deformities, Acquired / Q000175:diagnosis / Q000601:surgery*; D005545:Forefoot, Human / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods*; D017060:Patient Satisfaction; D011859:Radiography; D012189:Retrospective Studies; D013639:Tarsal Bones / Q000000981:diagnostic imaging / Q000601:surgery*; D016896:Treatment Outcome