title: Effect of dynamic humeral centring (DHC) treatment on painful active elevation of the arm in subacromial impingement syndrome. Secondary analysis of data from an RCT.
abstract: BACKGROUND
  The physiotherapy dynamic humeral centring (DHC) aims to prevent subacromial impingement of rotator cuff tendons during elevation of the arm. The objective of the study was to determine whether DHC acts via an effect on subacromial impingement mechanism by assessing its effect on painful elevation of the arm in subacromial impingement syndrome.
  
  
  METHODS
  This is a secondary analysis of results of a randomised controlled trial of the effectiveness of DHC. Sixty-nine patients with subacromial impingement syndrome were prospectively included. Patients and the assessor were blinded to the study hypothesis and treatment, respectively. Patients underwent DHC or non-specific mobilisation as a control for 6 weeks in 15 supervised individual outpatient sessions with home exercises. Outcomes were pain-free range of motion and presence of painful arc of the shoulder, both in active flexion and abduction of the arm at 3 months.
  
  
  RESULTS
  At 3 months, pain-free range of motion, both flexion and abduction, was greater in the DHC group than in the mobilisation group. The number of patients with painful arc during flexion was decreased in the DHC group.
  
  
  CONCLUSIONS
  DHC improves painful active elevation of the arm. We suggest that DHC may act via a specific effect on subacromial impingement mechanism.
authors.affiliation: Service de Rhumatologie, Groupe Hospitalier Saint Louis-Lariboisière-Fernand Widal, AP-HP, Université Paris 7, Paris, France.
authors.forename: Johann
authors.initials: J
authors.lastname: Beaudreuil
authors.affiliation: Service de Rhumatologie, Groupe Hospitalier Saint Louis-Lariboisière-Fernand Widal, AP-HP, Université Paris 7, Paris, France.
authors.forename: Sandra
authors.initials: S
authors.lastname: Lasbleiz
authors.affiliation: Unité de Recherche Clinique, Groupe Hospitalier Saint-Louis-Lariboisière-Fernand Widal, AP-HP, Université Paris 7, Paris, France.
authors.forename: Mounir
authors.initials: M
authors.lastname: Aout
authors.affiliation: Unité de Recherche Clinique, Groupe Hospitalier Saint-Louis-Lariboisière-Fernand Widal, AP-HP, Université Paris 7, Paris, France.
authors.forename: Eric
authors.initials: E
authors.lastname: Vicaut
authors.affiliation: Service de Médecine Physique et de Réadaptation, Groupe Hospitalier Saint Louis-Lariboisière-Fernand Widal, AP-HP, Université Paris 7, Paris, France.
authors.forename: Alain
authors.initials: A
authors.lastname: Yelnik
authors.affiliation: Service de Rhumatologie, Groupe Hospitalier Saint Louis-Lariboisière-Fernand Widal, AP-HP, Université Paris 7, Paris, France.
authors.forename: Thomas
authors.initials: T
authors.lastname: Bardin
authors.affiliation: Service de Rhumatologie, Groupe Hospitalier Saint Louis-Lariboisière-Fernand Widal, AP-HP, Université Paris 7, Paris, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Orcel
mesh_terms: D005260:Female; D006801:Humans; D006811:Humerus; D008297:Male; D008875:Middle Aged; D009068:Movement / Q000502:physiology; D026741:Physical Therapy Modalities; D016059:Range of Motion, Articular / Q000502:physiology; D019534:Shoulder Impingement Syndrome / Q000628:therapy*; D020069:Shoulder Pain / Q000517:prevention & control*; D016896:Treatment Outcome