Andreas Serner1,2, Adam Weir1, Johannes L Tol1,3, Kristian Thorborg2, Frank Roemer4,5, Ali Guermazi4, Per Hölmich1,2. 1. Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar. 2. Sports Orthopaedic Research Center (SORC-C), Department of Orthopaedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Denmark. 3. Academic Center for Evidence Based Sports Medicine, Academic Medical Center Amsterdam, Amsterdam, The Netherlands. 4. Department of Radiology, Quantitative Imaging Center (QIC), Boston University School of Medicine, Boston, Massachusetts, USA. 5. Department of Radiology, University of Erlangen-Nuremberg, Erlangen, Germany.
Abstract
BACKGROUND: Little is known about the value of clinical examination in relation to diagnostic imaging for acute groin injuries in athletes. Primary aim: to investigate whether clinical examination tests predict a positive or negative MRI result (MRI±). Secondary aim: to assess accuracy of clinical tests to localise injury in MRI+ cases. METHODS: We consecutively included 81 male athletes with acute groin injuries. Standardised clinical examination (palpation, resistance and stretch tests) and MRI were performed within 7 days of injury. Diagnostic statistics including positive and negative predictive values (PPV/NPV) were calculated. RESULTS: 85 acute injuries were found on MRI in 64 (79%) athletes with 17 (21%) athletes having MRI- injuries. Palpation had the highest NPV (91-96%, (95% CI 69% to 99%)). 3 specific adductor examination tests (resisted outer range adduction, squeeze test with hip neutral and long lever, and passive adductor stretch) showed 80-81% (95% CI 63% to 91%) probability of an MRI+ adductor lesion when positive, all with high accuracy of a correct MRI location (PPV 93-97% (95% CI 76% to 100%)). Hip flexor tests showed poor ability to predict MRI+ lesions (PPV 34-63% (95% CI 20% to 84%)) and low accuracy (PPV 17-71% (95% CI 7% to 85%)). CONCLUSIONS: 21% of athletes had negative imaging and the absence of palpation pain was best at predicting an MRI- result. Specific adductor examination tests accurately predicted MRI+ adductor injuries. Hip flexor clinical tests were poor at predicating and localising MRI+ injuries in the hip flexors. Clinical examination appears sufficient to diagnose acute adductor injuries, whereas MRI could assist in accurately locating acute hip flexor injuries. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.
BACKGROUND: Little is known about the value of clinical examination in relation to diagnostic imaging for acute groin injuries in athletes. Primary aim: to investigate whether clinical examination tests predict a positive or negative MRI result (MRI±). Secondary aim: to assess accuracy of clinical tests to localise injury in MRI+ cases. METHODS: We consecutively included 81 male athletes with acute groin injuries. Standardised clinical examination (palpation, resistance and stretch tests) and MRI were performed within 7 days of injury. Diagnostic statistics including positive and negative predictive values (PPV/NPV) were calculated. RESULTS: 85 acute injuries were found on MRI in 64 (79%) athletes with 17 (21%) athletes having MRI- injuries. Palpation had the highest NPV (91-96%, (95% CI 69% to 99%)). 3 specific adductor examination tests (resisted outer range adduction, squeeze test with hip neutral and long lever, and passive adductor stretch) showed 80-81% (95% CI 63% to 91%) probability of an MRI+ adductor lesion when positive, all with high accuracy of a correct MRI location (PPV 93-97% (95% CI 76% to 100%)). Hip flexor tests showed poor ability to predict MRI+ lesions (PPV 34-63% (95% CI 20% to 84%)) and low accuracy (PPV 17-71% (95% CI 7% to 85%)). CONCLUSIONS: 21% of athletes had negative imaging and the absence of palpation pain was best at predicting an MRI- result. Specific adductor examination tests accurately predicted MRI+ adductor injuries. Hip flexor clinical tests were poor at predicating and localising MRI+ injuries in the hip flexors. Clinical examination appears sufficient to diagnose acute adductor injuries, whereas MRI could assist in accurately locating acute hip flexor injuries. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.
Entities:
Keywords:
Diagnosis; Examination; Groin; Radiology; Sport
Authors: Kasper Krommes; Thomas Bandholm; Markus D Jakobsen; Lars L Andersen; Andreas Serner; Per Hölmich; Kristian Thorborg Journal: Int J Sports Phys Ther Date: 2017-06
Authors: Andreas Serner; Adam Weir; Johannes L Tol; Kristian Thorborg; Sean Lanzinger; Roald Otten; Per Hölmich Journal: Orthop J Sports Med Date: 2020-01-29