title: Shoulder activity level in patients with idiopathic adhesive capsulitis.
abstract: BACKGROUND
  Idiopathic adhesive capsulitis is a common condition resulting in painful multidirectional restriction of motion. Adhesive capsulitis may inhibit shoulder activity level, but this relationship has not been previously studied. This study tested the hypothesis that patients with idiopathic adhesive capsulitis have lower shoulder activity than sex- and age-matched controls.
  
  
  METHODS
  Seventy-two eligible patients (37 men and 35 women) with idiopathic adhesive capsulitis completed a validated shoulder activity scale that was compared with sex- and age-matched norms from a healthy population with no history of shoulder disorders. The association of shoulder activity level with patient age, sex, and American Shoulder and Elbow Surgeons and Simple Shoulder Test (SST) scores was evaluated.
  
  
  RESULTS
  Overall, 58% of patients actually had higher shoulder activity scores than sex- and age-matched controls. Among patients aged 51 to 70 years, 68% of patients (73% of men and 63% of women) demonstrated higher Shoulder Activity Scale scores compared with controls. The activity level was higher among all patients aged 51 to 70 years compared with controls (10.3 ± 1.48 vs. 8 ± 0.52, P = .0067). The difference was significant for men in this age group (12.2 ± 1.7 vs. 9 ± 0.75, P = .0042). There was a statistically significant positive correlation of the Shoulder Activity Scale score with the SST score (r = 0.31, P = .009).
  
  
  CONCLUSIONS
  Patients with idiopathic adhesive capsulitis do not have a lower shoulder activity level than sex- and age-matched controls, and older men may actually have a higher level of shoulder activity than controls. Shoulder activity level is correlated with the SST score in patients with idiopathic adhesive capsulitis.
authors.affiliation: Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA.
authors.forename: Joseph D
authors.initials: JD
authors.lastname: Lamplot
authors.affiliation: Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA.
authors.forename: Olivia
authors.initials: O
authors.lastname: Lillegraven
authors.affiliation: Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA. Electronic address: brophyr@wudosis.wustl.edu.
authors.forename: Robert H
authors.initials: RH
authors.lastname: Brophy
mesh_terms: D000328:Adult; D000368:Aged; D002062:Bursitis / Q000150:complications / Q000503:physiopathology*; D016022:Case-Control Studies; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016059:Range of Motion, Articular / Q000502:physiology*; D012785:Shoulder Joint / Q000503:physiopathology*; D013177:Sports
keywords: Shoulder; activity level; adhesive capsulitis; frozen shoulder; idiopathic adhesive capsulitis; shoulder activity scale