BACKGROUND: The aim of this study was to evaluate the clinical and radiological outcomes (in mid-term) after "shortening" scarf osteotomy of the fifth metatarsal for the treatment of bunionette deformity. METHODS: We retrospectively reviewed the functional score - American Orthopaedic Foot and Ankle Society (AOFAS) Lesser Toe Metatarsophalangeal-Interphalangeal Scale, radiographic results - 4th/5th intermetatarsal angle, varus angle of the 5th metatarsophalangeal joint and complications in a consecutive series of 34 feet (27 patients) with bunionette. Nine males and 18 females (mean age: 45 years) were included in the study. Three males and four females were operated bilaterally The patients were operated on between 2004 and 2015, and evaluated during 2017. RESULTS: The average AOFAS score improved from 59.4 to 93 at a mean follow-up of 7.2 years. The 4th/5th intermetatarsal angle and varus angle of the 5th metatarsophalangeal joint decreased from 13.9°/19.5° preoperatively to 6°/5.9° at final follow-up. No neurovascular damage was recorded. Complications arose in five feet (14.7%): delayed union (n=1), early infection (n=1), distal screw migration (n=1), asymptomatic non-union (n=1), transverse metatarsalgia (n=1). The osteotomy healed within less than three months except twoo (delayed union, non-union). Three feet needed additional surgery: screw removal (n=2), Weil osteotomy of 2nd-4th metatarsals (n=1). CONCLUSIONS: "Shortening" scarf osteotomy is an acceptable, but not complication-free, treatment option for the bunionette deformity and offers promising results in the mid-term.

Department of Orthopaedics Hospital Pelhrimov Slovanskeho bratrstvi 710 Pelhrimov 393 01 Czech Republic

Jessenius Faculty of Medicine in Martin Comenius University in Bratislava Martin Slovak Republic

University Department of Orthopaedic Surgery University Hospital Martin Kollarova 2 Martin 036 59 Slovak Republic

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$a Necas, Libor $u Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovak Republic; University Department of Orthopaedic Surgery, University Hospital Martin, Kollarova 2, Martin, 036 59, Slovak Republic.

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$a Bunionette deformity corrected with "shortening" scarf osteotomy of the fifth metatarsal: mid-term results of a 34-cases / $c L. Necas, M. Hrubina, M. Skotak, M. Melisik, P. Lisy, Z. Cibula,

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$a BACKGROUND: The aim of this study was to evaluate the clinical and radiological outcomes (in mid-term) after "shortening" scarf osteotomy of the fifth metatarsal for the treatment of bunionette deformity. METHODS: We retrospectively reviewed the functional score - American Orthopaedic Foot and Ankle Society (AOFAS) Lesser Toe Metatarsophalangeal-Interphalangeal Scale, radiographic results - 4th/5th intermetatarsal angle, varus angle of the 5th metatarsophalangeal joint and complications in a consecutive series of 34 feet (27 patients) with bunionette. Nine males and 18 females (mean age: 45 years) were included in the study. Three males and four females were operated bilaterally The patients were operated on between 2004 and 2015, and evaluated during 2017. RESULTS: The average AOFAS score improved from 59.4 to 93 at a mean follow-up of 7.2 years. The 4th/5th intermetatarsal angle and varus angle of the 5th metatarsophalangeal joint decreased from 13.9°/19.5° preoperatively to 6°/5.9° at final follow-up. No neurovascular damage was recorded. Complications arose in five feet (14.7%): delayed union (n=1), early infection (n=1), distal screw migration (n=1), asymptomatic non-union (n=1), transverse metatarsalgia (n=1). The osteotomy healed within less than three months except twoo (delayed union, non-union). Three feet needed additional surgery: screw removal (n=2), Weil osteotomy of 2nd-4th metatarsals (n=1). CONCLUSIONS: "Shortening" scarf osteotomy is an acceptable, but not complication-free, treatment option for the bunionette deformity and offers promising results in the mid-term.

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$a Hrubina, Maros $u Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovak Republic; University Department of Orthopaedic Surgery, University Hospital Martin, Kollarova 2, Martin, 036 59, Slovak Republic; Department of Orthopaedics, Hospital Pelhrimov, Slovanskeho bratrstvi 710, Pelhrimov, 393 01, Czech Republic. Electronic address: mhrubina@gmail.com.

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$a Skotak, Miroslav $u Department of Orthopaedics, Hospital Pelhrimov, Slovanskeho bratrstvi 710, Pelhrimov, 393 01, Czech Republic.

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$a Melisik, Marian $u Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovak Republic; University Department of Orthopaedic Surgery, University Hospital Martin, Kollarova 2, Martin, 036 59, Slovak Republic.

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$a Lisy, Peter $u Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovak Republic; University Department of Orthopaedic Surgery, University Hospital Martin, Kollarova 2, Martin, 036 59, Slovak Republic.

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$a Cibula, Zoltan $u Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovak Republic; University Department of Orthopaedic Surgery, University Hospital Martin, Kollarova 2, Martin, 036 59, Slovak Republic.

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