title: Worse self-reported outcomes but no limitations in performance-based measures in patients with long-standing hip and groin pain compared with healthy controls.
abstract: OBJECTIVE
  This study aimed to evaluate patient-reported outcomes as well as lower extremity and trunk muscle function in patients with long-standing hip and groin pain, in comparison with matched, healthy controls. It was hypothesized that patients with long-standing hip and groin pain would report more deficiency on the Copenhagen Hip and Groin Outcome Score (HAGOS) and have worse outcomes on performance-based measures than healthy controls.
  
  
  METHODS
  Nineteen patients with long-standing hip and groin pain and 19 healthy, activity level-, age-, gender-, and weight-matched controls were assessed with the HAGOS for self-reported outcomes, and a parallel squat (w/kg), single-leg triple jump (cm), single-leg rise (n), barbell roll-out (% of height), and plank test (s) for performance-based measures. Independent sample t test was performed to assess between-group differences. The paired t test was used to analyse between-limb differences in unilateral performance tasks.
  
  
  RESULTS
  The patients had worse scores than the controls in all HAGOS subscales (p ≤ 0.001), while no statistically significant differences were observed for any performance measure between groups or between symptomatic and non-symptomatic limbs.
  
  
  CONCLUSIONS
  Despite significant self-reported functional limitations on the HAGOS, there were no significant differences between groups in performance-based strength or power measures. The results of this study highlight the need to identify performance-based measures, sensitive to functional deficiencies in patients with long-standing hip and groin pain in order to complement the clinical picture obtained by patient-reported outcomes such as the HAGOS.
  
  
  METHODS
  III.
authors.affiliation: Department of Health Sciences, Lund University, Lund, Sweden. tobias.worner@med.lu.se.
authors.forename: Tobias
authors.initials: T
authors.lastname: Wörner
authors.affiliation: Department of Health Sciences, Lund University, Lund, Sweden.
authors.forename: Haraldur B
authors.initials: HB
authors.lastname: Sigurðsson
authors.affiliation: Department of Health Sciences, Lund University, Lund, Sweden.
authors.forename: Anders
authors.initials: A
authors.lastname: Pålsson
authors.affiliation: Department of Health Sciences, Lund University, Lund, Sweden.|Department of Clinical Sciences, Orthopaedics, Skåne University Hospital, Lund, Sweden.
authors.forename: Ioannis
authors.initials: I
authors.lastname: Kostogiannis
authors.affiliation: Department of Health Sciences, Lund University, Lund, Sweden.
authors.forename: Eva
authors.initials: E
authors.lastname: Ageberg
mesh_terms: D000328:Adult; D002908:Chronic Disease; D005260:Female; D006119:Groin / Q000293:injuries / Q000503:physiopathology*; D006615:Hip / Q000503:physiopathology*; D006621:Hip Joint / Q000503:physiopathology; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000293:injuries / Q000503:physiopathology*; D010146:Pain / Q000503:physiopathology; D057566:Self Report; D013647:Task Performance and Analysis; D055815:Young Adult
keywords: Athletic performance; Groin; Hip joint; Muscle strength; Musculoskeletal pain; Self-report