Knee Surg Sports Traumatol Arthrosc (2016) 24:2009–2015 DOI 10.1007/s00167-014-3275-z
HIP
Quantification and correlation of hip capsular volume to demographic and radiographic predictors Jonathan M. Frank · Simon Lee · Frank M. McCormick · Mark Jordan · Bryce Austell · William Slikker · Michael J. Salata · Shane J. Nho
Received: 17 March 2014 / Accepted: 26 August 2014 / Published online: 14 September 2014 © European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2014
Abstract Purpose The purpose of this study was to develop a novel method to quantify hip capsular volume in patients undergoing hip arthroscopic surgery, utilizing magnetic resonance arthrogram (MRA) and to determine whether there are demographic or radiological factors that are associated with capsular volume. Methods A retrospective review was performed from 2006 to 2014 of consecutive patients who presented with hip pain and received a hip MRA and plain radiographs. All patients were suspected of soft tissue injury due to underlying femoroacetabular impingement (FAI). A novel technique using Osirix MD for the quantification of capsular and femoral head volumes was described. Results Ninety-seven patients met the study criteria and were included for analysis. The average total capsular volume (including the femoral head) measured 79.89 ± 20.35 cm3, average femoral head volume 46.68 ± 12.32 cm3, and average true capsular volume J. M. Frank · S. Lee · M. Jordan · B. Austell · W. Slikker · S. J. Nho (*) Division of Sports Medicine, Department of Orthopedic Surgery, Hip Preservation Center, Rush University Medical Center, Rush Medical College of Rush University, 1611 W. Harrison St, Suite 300, Chicago, IL 60612, USA e-mail:
[email protected] S. Lee e-mail:
[email protected]
measured 33.20 ± 12.58 cm3. Average total capsular:femoral head volume ratio was 1.74 ± 0.27. Significant differences were seen between genders for total capsular volume (P
