Jan Neumann1, Alan L Zhang2, Benedikt J Schwaiger3,4, Michael A Samaan3, Richard Souza3,5, Sarah C Foreman3, Gabby B Joseph3, Trevor Grace2, Sharmila Majumdar3, Thomas M Link3. 1. Musculoskeletal Quantitative Imaging Research Group, Department of Radiology & Biomedical Imaging, University of California San Francisco, 185 Berry St, Suite 350, San Francisco, CA, 94107, USA. Jan.Neumann@ucsf.edu. 2. Department of Orthopedic Surgery, University of California, San Francisco, CA, USA. 3. Musculoskeletal Quantitative Imaging Research Group, Department of Radiology & Biomedical Imaging, University of California San Francisco, 185 Berry St, Suite 350, San Francisco, CA, 94107, USA. 4. Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany. 5. Department of Physical Therapy & Rehabilitation Science, University of California, San Francisco, CA, USA.
Abstract
PURPOSE: To validate SHOMRI gradings in preoperative hip magnetic resonance imaging (MRI) with intra-arthroscopic evaluation of intraarticular hip abnormalities. METHODS: Preoperative non-arthrographic 3.0-T MRIs of 40 hips in 39 patients (1 patient with bilateral hip surgery) with femoroacetabular impingement (FAI) syndrome (mean age, 34.7 years ± 9.0; n = 16 females), refractory to conservative measures, that underwent hip arthroscopy were retrospectively assessed by two radiologists for chondrolabral abnormalities and compared with intra-arthroscopic findings as the standard of reference. Arthroscopically accessible regions were compared with the corresponding SHOMRI subregions and assessed for the presence and grade of cartilaginous pathologies in the acetabulum and femoral head. The acetabular labrum was assessed for the presence or absence of labral tears. For the statistical analysis sensitivity and specificity as well as intraclass correlation (ICC) for interobserver agreement were calculated. RESULTS: Regarding chondral abnormalities, 58.8% of the surgical cases showed chondral defects. SHOMRI scoring showed a sensitivity of 95.7% and specificity of 84.8% in detecting cartilage lesions. Moreover, all cases with full-thickness defects (n = 9) were identified correctly, and in n = 6 cases (out of n = 36 with partial-thickness defects) the defective cartilage was identified but the actual depth overestimated. Labral tears were present in all cases and the MR readers identified 92.5% correctly. ICC showed a good interobserver agreement with 86.3% (95% CI 80.0, 90.6%) CONCLUSION: Using arthroscopic correlation, SHOMRI grading of the hip proves to be a reliable and precise method to assess chondrolabral hip joint abnormalities. KEY POINTS: • Assessment of hip abnormalities using MRI with surgical correlation. • Comparing surgery and MRI by creating a hybrid anatomic map that covers both modalities. • Non-arthrographic use of 3.0-T MRI provides detailed information on cartilage and labral abnormalities in hip joints.
PURPOSE: To validate SHOMRI gradings in preoperative hip magnetic resonance imaging (MRI) with intra-arthroscopic evaluation of intraarticular hip abnormalities. METHODS: Preoperative non-arthrographic 3.0-T MRIs of 40 hips in 39 patients (1 patient with bilateral hip surgery) with femoroacetabular impingement (FAI) syndrome (mean age, 34.7 years ± 9.0; n = 16 females), refractory to conservative measures, that underwent hip arthroscopy were retrospectively assessed by two radiologists for chondrolabral abnormalities and compared with intra-arthroscopic findings as the standard of reference. Arthroscopically accessible regions were compared with the corresponding SHOMRI subregions and assessed for the presence and grade of cartilaginous pathologies in the acetabulum and femoral head. The acetabular labrum was assessed for the presence or absence of labral tears. For the statistical analysis sensitivity and specificity as well as intraclass correlation (ICC) for interobserver agreement were calculated. RESULTS: Regarding chondral abnormalities, 58.8% of the surgical cases showed chondral defects. SHOMRI scoring showed a sensitivity of 95.7% and specificity of 84.8% in detecting cartilage lesions. Moreover, all cases with full-thickness defects (n = 9) were identified correctly, and in n = 6 cases (out of n = 36 with partial-thickness defects) the defective cartilage was identified but the actual depth overestimated. Labral tears were present in all cases and the MR readers identified 92.5% correctly. ICC showed a good interobserver agreement with 86.3% (95% CI 80.0, 90.6%) CONCLUSION: Using arthroscopic correlation, SHOMRI grading of the hip proves to be a reliable and precise method to assess chondrolabral hip joint abnormalities. KEY POINTS: • Assessment of hip abnormalities using MRI with surgical correlation. • Comparing surgery and MRI by creating a hybrid anatomic map that covers both modalities. • Non-arthrographic use of 3.0-T MRI provides detailed information on cartilage and labral abnormalities in hip joints.
Entities:
Keywords:
Arthroscopy; Chondrolabral injuries; Evaluation studies; Hip joint; Magnetic resonance imaging
Authors: Martin Lavigne; Javad Parvizi; Martin Beck; Klaus A Siebenrock; Reinhold Ganz; Michael Leunig Journal: Clin Orthop Relat Res Date: 2004-01 Impact factor: 4.176
Authors: C G Peterfy; A Guermazi; S Zaim; P F J Tirman; Y Miaux; D White; M Kothari; Y Lu; K Fye; S Zhao; H K Genant Journal: Osteoarthritis Cartilage Date: 2004-03 Impact factor: 6.576
Authors: Reinhold Ganz; Javad Parvizi; Martin Beck; Michael Leunig; Hubert Nötzli; Klaus A Siebenrock Journal: Clin Orthop Relat Res Date: 2003-12 Impact factor: 4.176
Authors: D T Felson; R C Lawrence; P A Dieppe; R Hirsch; C G Helmick; J M Jordan; R S Kington; N E Lane; M C Nevitt; Y Zhang; M Sowers; T McAlindon; T D Spector; A R Poole; S Z Yanovski; G Ateshian; L Sharma; J A Buckwalter; K D Brandt; J F Fries Journal: Ann Intern Med Date: 2000-10-17 Impact factor: 25.391
Authors: Tzu-Chieh Liao; Michael A Samaan; Tijana Popovic; Jan Neumann; Alan L Zhang; Thomas M Link; Sharmila Majumdar; Richard B Souza Journal: J Orthop Sports Phys Ther Date: 2019-10-14 Impact factor: 4.751
Authors: Sarah C Foreman; Alan L Zhang; Jan Neumann; Claudio E von Schacky; Richard B Souza; Sharmila Majumdar; Thomas M Link Journal: AJR Am J Roentgenol Date: 2019-11-06 Impact factor: 3.959
Authors: Guodong Zeng; Florian Schmaranzer; Celia Degonda; Nicolas Gerber; Kate Gerber; Moritz Tannast; Jürgen Burger; Klaus A Siebenrock; Guoyan Zheng; Till D Lerch Journal: Eur J Radiol Open Date: 2020-12-18
Authors: Agnieszka Lewińska; Piotr Palczewski; Krzysztof Piłat; Andrzej Cieszanowski; Witold Rongies Journal: J Clin Med Date: 2021-12-21 Impact factor: 4.241
Authors: J J Heerey; R Srinivasan; R Agricola; A Smith; J L Kemp; T Pizzari; M G King; P R Lawrenson; M J Scholes; R B Souza; T Link; S Majumdar; K M Crossley Journal: Osteoarthritis Cartilage Date: 2020-12-30 Impact factor: 6.576