IATROGENIC HALLUX VARUS: CAUSES OF DEFORMITY AND POSSIBILITIES OF PERCUTANEOUS SURGICAL CORRECTION (RETROSPECTIVE ANALYSIS OF CASE REPORTS)

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Abstract

Introduction. Hallux varus is a relatively rare foot deformity. Commonly, hallux varus is a complication after the hallux valgus surgery and typically is the result of the first metatarsal medial eminence over resection, first and second metatarsal excessive convergence, over release of the lateral soft tissues, overtightening of the medial soft tissues and soft tissue imbalance of the first metatarsophalangeal joint.

The purpose of this study was to clarify the causes and timing of the iatrogenic hallux varus formation and to evaluate the possibility and efficiency of percutaneous techniques in its surgical treatment.

Material and methods. Thirty-one feet (31 females suffering from iatrogenic hallux varus) were examined clinically and radiologically, including 14 patients who underwent surgery. The average age of the whole group was 57 years (range, 39 to 74), the subgroup of operated patients — 60 years (range from 53 to 68). The time after primary interventions before the examination varied from 2 to 44 years. The mean follow-up after surgery was 6 months (range from 1.5 to 54).

Results. No infection or wound-healing issues were observed. Overall, the patients were completely satisfied with the outcomes of 12 surgeries and satisfied with reservation in 2 cases.

Conclusions. The visual manifestations of hallux varus are determined not only by the hallux varus angle, but also by the value of the first intermetatarsal angle. In addition to well-known factors, hallux varus formation is determined by first metatarsal bone elongation and first metatarsophalangeal joint instability. In rare cases, only one of the factors leads to the hallux varus; as a rule, we see a combination of factors with their mutual reinforcement. Despite the demonstration of usage possibility and the efficiency of percutaneous techniques in hallux varus correcting, a small number of observations in the study does not yet allow giving recommendations on the use of specific percutaneous techniques depending on the various clinical manifestations of hallux varus.

About the authors

S. Yu. Berezhnoy

Medical center of the Main administration for services to the diplomatic corps (GlavUpDK) at the Ministry of Foreign Affairs of Russian Federation

Author for correspondence.
Email: Doktor@Berezhnoi.ru

Sergey Yu. Berezhnoy — Dr. Sci. (Med.) Оrthopedic Surgeon.

2-y Botkinskiy proezd, 5, Moscow, 125284

Russian Federation

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