Abstract
Objective
Intraarticular gadolinium-enhanced magnetic resonance arthrography (MRA) is commonly applied to characterize morphological disorders of the hip. However, the reproducibility of retrieving anatomic landmarks on MRA scans and their correlation with intraarticular pathologies is unknown. A precise mapping system for the exact localization of hip pathomorphologies with radial MRA sequences is lacking. Therefore, the purpose of the study was the establishment and validation of a reproducible mapping system for radial sequences of hip MRA.
Materials and methods
Sixty-nine consecutive intraarticular gadolinium-enhanced hip MRAs were evaluated. Radial sequencing consisted of 14 cuts orientated along the axis of the femoral neck. Three orthopedic surgeons read the radial sequences independently. Each MRI was read twice with a minimum interval of 7 days from the first reading. The intra- and inter-observer reliability of the mapping procedure was determined.
Results
A clockwise system for hip MRA was established. The teardrop figure served to determine the 6 o’clock position of the acetabulum; the center of the greater trochanter served to determine the 12 o’clock position of the femoral head-neck junction. The intra- and inter-observer ICCs to retrieve the correct 6/12 o’clock positions were 0.906–0.996 and 0.978–0.988, respectively.
Conclusions
The established mapping system for radial sequences of hip joint MRA is reproducible and easy to perform.
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References
Czerny C, Hofmann S, Neuhold A, Tschauner C, Engel A, Recht MP, et al. Lesions of the acetabular labrum: accuracy of MR imaging and MR arthrography in detection and staging. Radiology. 1996;200:225–30.
Czerny C, Hofmann S, Urban M, Tschauner C, Neuhold A, Pretterklieber M, et al. MR arthrography of the adult acetabular capsular-labral complex: correlation with surgery and anatomy. AJR Am J Roentgenol. 1999;173:345–9.
Dudda M, Mamisch TC, Krueger A, Werlen S, Siebenrock KA, Beck M. Hip arthroscopy after surgical hip dislocation: is predictive imaging possible? Arthrosc J Arthrosc Relat Surg Off Publ Arthrosc Assoc N Am Int Arthrosc Assoc. 2011;27:486–92.
Schmid MR, Notzli HP, Zanetti M, Wyss TF, Hodler J. Cartilage lesions in the hip: diagnostic effectiveness of MR arthrography. Radiology. 2003;226:382–6.
Landis JR, Koch GG. The measurement of observer agreement for categorical data. Biometrics. 1977;33:159–74.
Berton C, Bocquet D, Krantz N, Cotten A, Migaud H, Girard J. Shelf arthroplasties long-term outcome: influence of labral tears. A prospective study at a minimal 16 years’ follow up. Orthop Traumatol Surg Res. 2010;96:753–9.
Byrd JW, Jones KS. Prospective analysis of hip arthroscopy with 2-year follow-up. Arthrosc J Arthrosc Relat Surg Off Publ Arthrosc Assoc N Am Int Arthrosc Assoc. 2000;16:578–87.
Ganz R, Parvizi J, Beck M, Leunig M, Notzli H, Siebenrock KA. Femoroacetabular impingement: a cause for osteoarthritis of the hip. Clin Orthop Relat Res. 2003;417:112–20.
Gdalevitch M, Smith K, Tanzer M. Delamination cysts: a predictor of acetabular cartilage delamination in hips with a labral tear. Clin Orthop Relat Res. 2009;467:985–91.
Kim WY, Hutchinson CE, Andrew JG, Allen PD. The relationship between acetabular retroversion and osteoarthritis of the hip. J Bone Joint Surg Br Vol. 2006;88:727–9.
Lequesne M, Bellaiche L. Anterior femoroacetabular impingement: an update. Joint Bone Spine Rev Rhum. 2012;79:249–55.
O’Leary JA, Berend K, Vail TP. The relationship between diagnosis and outcome in arthroscopy of the hip. Arthrosc J Arthrosc Relat Surg Off Publ Arthrosc Assoc N Am Int Arthrosc Assoc. 2001;17:181–8.
Dudda M, Albers C, Mamisch TC, Werlen S, Beck M. Do normal radiographs exclude asphericity of the femoral head-neck junction? Clin Orthop Relat Res. 2009;467:651–9.
Plotz GM, Brossmann J, von Knoch M, Muhle C, Heller M, Hassenpflug J. Magnetic resonance arthrography of the acetabular labrum: value of radial reconstructions. Arch Orthop Trauma Surg. 2001;121:450–7.
Rakhra KS, Sheikh AM, Allen D, Beaule PE. Comparison of MRI alpha angle measurement planes in femoroacetabular impingement. Clin Orthop Relat Res. 2009;467:660–5.
Yoon LS, Palmer WE, Kassarjian A. Evaluation of radial-sequence imaging in detecting acetabular labral tears at hip MR arthrography. Skeletal Radiol. 2007;36:1029–33.
Blankenbaker DG, De Smet AA, Keene JS, Fine JP. Classification and localization of acetabular labral tears. Skeletal Radiol. 2007;36:391–7.
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Klenke, F.M., Hoffmann, D.B., Cross, B.J. et al. Validation of a standardized mapping system of the hip joint for radial MRA sequencing. Skeletal Radiol 44, 339–343 (2015). https://doi.org/10.1007/s00256-014-2026-z
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DOI: https://doi.org/10.1007/s00256-014-2026-z