Journal of Korean Foot and Ankle Society (대한족부족관절학회지)

Korean Foot & Ankle Society (대한족부족관절학회)
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Characteristics of Severe Hallux Valgus Deformity with Moderate Intermetatarsal Angle

중등도 중족골간 각을 가지는 중증도 무지외반증의 특징

  • Park, Chul Hyun (Department of Orthopaedic Surgery, Yeungnam University College of Medicine) ;
  • Lee, Woo Chun (Department of Orthopaedic Surgery, Seoul Paik Hospital, Inje University College of Medicine) ;
  • Kim, Jung Rae (Department of Orthopaedic Surgery, MSR Hospital) ;
  • Lim, Seung Whan (Department of Orthopaedic Surgery, Yeungnam University College of Medicine)
  • 박철현 (영남대학교 의과대학 정형외과학교실) ;
  • 이우천 (인제대학교 의과대학 서울백병원 정형외과학교실) ;
  • 김정래 (MS재건병원 정형외과) ;
  • 임승완 (영남대학교 의과대학 정형외과학교실)
  • Received : 2014.07.15
  • Accepted : 2014.10.21
  • Published : 2014.12.15
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Abstract

Purpose: The purpose of this study is to evaluate the characteristics of hallux valgus with severe hallux valgus angle (HVA) and moderate intermetatarsal angle (IMA) after proximal chevron osteotomy. Materials and Methods: Between January 2008 and December 2010, 41 patients (48 feet) were treated with proximal chevron osteotomy and distal soft tissue procedure for symptomatic severe hallux valgus deformity ($HVA{\geq}40^{\circ}$). Patients were divided into two groups, group M (IMA< $18^{\circ}$) and group S ($IMA{\geq}18^{\circ}$). Mean age of patients was 55.7 years (34~70 years) in group M and 60.0 years (44~78 years) in group S. Mean duration of follow-up was 20.4 months (12~41 months) in group M and 18.5 months (12~35 months) in group S. Radiographic parameters, including HVA, IMA, sesamoid position, metatarsus adductus angle (MAA), and distal metatarsal articular angle (DMAA), were compared between groups. Clinical results were assessed using American Orthopaedic Foot and Ankle Society (AOFAS) score and visual analogue scale (VAS). Recurrence rate at the last follow-up was compared between group M and group S. Results: Preoperative HVA and grade of sesamoid position did not differ between the groups. However, immediate postoperative HVA and grade of sesamoid position were significantly larger in group M. Preoperative MAA and DMAA were significantly larger in group M. No significant difference in AOFAS score and VAS was observed between the groups at the last follow-up. Ten of the 27 feet (37.0%) in group M and two of the 21 feet (9.5%) in group S showed hallux valgus recurrence at the last follow-up. Group M showed a significantly higher recurrence rate than group S. Conclusion: Recurrence rate for severe hallux valgus with moderate IMA is higher than that of severe hallux valgus with severe IMA.

Keywords

References

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