title: The anterior mini-open approach for femeroacetabular impingement: Gait and functional assessment at one year post-surgery.
abstract: OBJECTIVE
  This study aimed to evaluate the outcome of the anterior mini-open approach of the hip for femoroacetabular impingement (FAI) at one year post-surgery by use of questionnaires, functional capacity tests and biomechanical studies.
  
  
  METHODS
  This is a case series prospective study. A total of 14 patients diagnosed of FAI were included. Patients were classified according to Tönnis scale. Hip joint mobility, Faber distance, pain levels (assessed on a visual analogic scale [VAS]), 6-minute walking test (6MWT), Timed up & go test (TUGT), Stairs climbing test, Lequesne functional index, and gait analysis were assessed prior to and 12 months after surgery.
  
  
  RESULTS
  Pain significantly improved following surgery. An improvement of 80% or more was found in 6 patients (42.85% of cases). Improvements were also seen in time support of the affected limb and in the braking force of the contralateral limb, although these are not clinically significant. No statistically significant changes were seen in functional capacity tests. At 12 months after surgery, meralgia paraesthetica presented in 3 patients (21.4%), and a total hip arthroplasty was performed in 1 patient.
  
  
  CONCLUSIONS
  There was significant reduction in pain intensity 12 months following mini-open approach for FAI compared to preoperatively. Improvement in gait analysis and functional capacity was also seen, although not statistically significant.
authors.affiliation: Department of Orthopaedic and Trauma Surgery, Hospital de Mataró (Consorci Sanitari del Maresme), Carretera Cirera s/n, 08304 Mataró (Barcelona), Spain. Electronic address: fmalagelada@gmail.com.
authors.forename: Francesc
authors.initials: F
authors.lastname: Malagelada
authors.affiliation: Department of Rehabilitation medicine, Hospital de Mataró (Consorci Sanitari del Maresme), Carretera Cirera s/n, 08304 Mataró (Barcelona), Spain.
authors.forename: Virgilio Amin
authors.initials: VA
authors.lastname: Del Carmen
authors.affiliation: Surgical Trainee, London, UK.
authors.forename: Samuel J
authors.initials: SJ
authors.lastname: Barke
authors.affiliation: Department of Rehabilitation medicine, Hospital de Mataró (Consorci Sanitari del Maresme), Carretera Cirera s/n, 08304 Mataró (Barcelona), Spain.
authors.forename: Lluis
authors.initials: L
authors.lastname: Guirao Cano
authors.affiliation: Department of Rehabilitation medicine, Hospital de Mataró (Consorci Sanitari del Maresme), Carretera Cirera s/n, 08304 Mataró (Barcelona), Spain; Department of Experimental Science and Healthcare, Faculty of Health Sciences, Universitat Pompeu Fabra, Dr Aiguader building (campus del Mar), Doctor Aiguader, 88. 08003 Barcelona, Spain; Faculty of Health Sciences Blanquerna, Universitat Ramon Llull, Padilla 326-332, 08025 Barcelona, Spain.
authors.forename: Eulogio
authors.initials: E
authors.lastname: Pleguezuelos Cobo
mesh_terms: D000328:Adult; D005080:Exercise Test / Q000379:methods; D005260:Female; D057925:Femoracetabular Impingement / Q000503:physiopathology* / Q000601:surgery; D005500:Follow-Up Studies; D005684:Gait / Q000502:physiology*; D006621:Hip Joint / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D019637:Orthopedic Procedures / Q000379:methods*; D010147:Pain Measurement; D011184:Postoperative Period; D011446:Prospective Studies; D016059:Range of Motion, Articular; D013997:Time Factors; D016896:Treatment Outcome; D016138:Walking / Q000502:physiology
keywords: Femoroacetabular impingement; Gait; Hip; Minimally invasive surgery; Outcome assessment; Rehabilitation