title: Arthroscopy-assisted correction of hallux valgus deformity.
abstract: OBJECTIVE
  Our purpose was to evaluate the clinical and radiologic results of arthroscopy-assisted hallux valgus deformity correction with percutaneous screw fixation.
  
  
  METHODS
  Ninety-four feet underwent arthroscopy-assisted hallux valgus deformity correction. Patients in whom the 1,2-intermetatarsal angle could be reduced manually and who had no significant abnormality of the distal metatarsal articular angle were included, and an endoscopic distal soft tissue procedure was performed. Those patients with first tarsometatarsal hypermobility, in whom the 1,2-intermetatarsal angle cannot be reduced manually, or those who had a significantly abnormal distal metatarsal articular angle were excluded. Patients were assessed using the American Orthopaedic Foot and Ankle Society (AOFAS) hallux-metatarsophalangeal-interphalangeal scale. The pre- and postoperative hallux valgus angle, intermetatarsal angle, distal metatarsal articular angle, and sesamoid position were measured.
  
  
  RESULTS
  The mean score on the AOFAS scale was 93 +/- 8 out of 100 points. The hallux valgus angle improved from 33 degrees +/- 7 degrees (range, 20 degrees to 58 degrees ) to 14 degrees +/- 5 degrees (range, 4 degrees to 30 degrees ). The intermetatarsal angle improved from 14 degrees +/- 3 degrees (range, 10 degrees to 26 degrees ) to 9 degrees +/- 2 degrees (range, 5 degrees to 18 degrees ). Complications of hallux varus, skin impingement, screw breakage, and first metatarsophalangeal stiffness were experienced. Two patients with symptomatic recurrence had revision operation performed.
  
  
  CONCLUSIONS
  Our study shows that arthroscopic correction of the hallux valgus deformity can achieve good clinical and radiologic results, provided that careful preoperative clinico-radiologic assessment is made to exclude patients contraindicated for the procedure.
  
  
  METHODS
  Level IV, therapeutic case series.
authors.affiliation: Department of Orthopaedics and Traumatology, North District Hospital, Sheung Shui, N.T., Hong Kong SAR, China. luithderek@yahoo.co.uk
authors.forename: Tun Hing
authors.initials: TH
authors.lastname: Lui
authors.forename: Kwok Bill
authors.initials: KB
authors.lastname: Chan
authors.forename: Hung Tsan
authors.initials: HT
authors.lastname: Chow
authors.forename: Chun Man
authors.initials: CM
authors.lastname: Ma
authors.forename: Ping Keung
authors.initials: PK
authors.lastname: Chan
authors.forename: Wai Kit
authors.initials: WK
authors.lastname: Ngai
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001174:Arthrodesis; D001182:Arthroscopy; D001863:Bone Screws; D005260:Female; D006215:Hallux Valgus / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008297:Male; D008684:Metatarsus / Q000601:surgery; D008875:Middle Aged; D010027:Osteotomy; D017060:Patient Satisfaction; D011859:Radiography; D012008:Recurrence; D012086:Reoperation; D012189:Retrospective Studies; D016896:Treatment Outcome