Capsular closure versus non-capsular closure

Multicentre study on capsular closure versus non-capsular closure during hip arthroscopy in Danish patients with femoroacetabular impingement (FAI)

Primary investigator

Christian Dippmann1

Senior researcher

Bjarne Mygind-Klavsen4

Study members

Otto Kraemer,2, Bent Lund,3, Michael Krogsgaard,1, Per Hølmich,2, Martin Lind,4, Karen Briggs,5, Marc Philippon,5


  1. 1Section for Sports Traumatology M51, IOC Research Center Copenhagen, Bispebjerg-Frederiksberg Hospital, Copenhagen, Denmark
  2. Department of Orthopedic Surgery, Sports Orthopedic Research Center – Copenhagen (SORC-C) , Amager-Hvidovre, University of Copenhagen, Copenhagen, Denmark
  3. Department of Orthopedics, Horsens Regional Hospital, Horsens, Denmark
  4. Division of Sports Traumatology, Department of Orthopedics, Aarhus University Hospital THG, Aarhus, Denmark
  5. Center for outcome-based Orthopaedic Research (COOR), Steadman Philippon Research Institute, Vail, Colorado, USA

About the study/project

Hip arthroscopy has become a standard procedure in the treatment of hip joint pain not related to osteoarthritis or dysplasia in the young and active patient. There has been increasing focus on the contribution of the hip capsule to function and on stability following hip arthroscopy. It has been suggested that capsular closure after hip arthroscopy may prevent microinstability and macroinstability of the hip joint and reduce revision rate. However, it remains unknown whether capsular closure should be performed as a standard procedure when performing hip arthroscopies, especially in patients without additional risk factors for instability such as hypermobility or dysplasia of the hip. We hypothesised that capsular closure will lead to a superior outcome in hip arthroscopy for femoroacetabular impingement syndrome (FAIS) compared with non-capsular closure.

Purpose of the study/project

The aim of this multicentre randomised controlled trial is to evaluate the effect of capsular closure in relation to postoperative outcomes and revision rates for patients undergoing hip arthroscopy for FAIS. Identifier


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