Radiographic Changes in Forefoot Geometry with Weightbearing: Hallux Valgus Angle, Intermetatarsal Angle, and Medial Sesamoid

체중 부하 후 전족부 배열의 방사선적 변화: 무지 외반각 및 중족골간 각과 내측 종자골의 위치

  • Rowe, Sung-Man (Department of Orthopedic Surgery, Chonnam National University Medical School) ;
  • Lee, Keun-Bae (Department of Orthopedic Surgery, Chonnam National University Medical School) ;
  • Choi, Jin (Department of Orthopedic Surgery, Chonnam National University Medical School) ;
  • Cheon, Seung-Young (Department of Orthopedic Surgery, Chonnam National University Medical School) ;
  • Hur, Chang-Ich (Department of Orthopedic Surgery, Chonnam National University Medical School)
  • 노성만 (전남대학교 의과대학 정형외과학교실) ;
  • 이근배 (전남대학교 의과대학 정형외과학교실) ;
  • 최진 (전남대학교 의과대학 정형외과학교실) ;
  • 천승영 (전남대학교 의과대학 정형외과학교실) ;
  • 허창익 (전남대학교 의과대학 정형외과학교실)
  • Published : 2005.06.01

Abstract

Purpose: To determine the radiographic changes in forefoot geometry with weight-bearing. Materials and Methods: The forefoot radiographs of 100 normal Korean adults, 50 male and 50 female volunteers, were evaluated both in nonweight-bearing and weight-bearing. The mean age was 27 years with range of 21-39 years. Those with normal feet were selected from volunteers having no history of foot problems or other musculoskeletal diseases. Results: The changes of measured angle between phalanges and metatarsals with weight-bearing were as follows; Hallux valgus angle was noted to increase in 20% of the feet, decrease in 59%, and remained unchange in 21%. Intermetatarsal angle $1{\sim}2$ was noted to increase in 76% of the feet, decrease in 3%, and remained unchange in 21%. Intermetatarsal angle $1{\sim}5$ was noted to increase in 95% and remained unchange in 5%. Shift in medial sesamoid on weight-bearing was also not consistent. Lateral shift was noted in 27%, no shift in 66%, medial shift in 7%. Conclusion: The generalized concept that the angles between bones and shift of medial sesamoid in the forefoot will change consistently with weightbearing was not found.

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