Usefulness of MR Arthrography of the Hip with and without leg Traction in Detection of Intra-articular Bodies.

Schmaranzer, Florian; Lerch, Till; Strasser, U; Vavron, P; Schmaranzer, E; Tannast, Moritz (2019). Usefulness of MR Arthrography of the Hip with and without leg Traction in Detection of Intra-articular Bodies. Academic radiology, 26(9), e252-e259. Elsevier 10.1016/j.acra.2018.10.008

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RATIONALE AND OBJECTIVE Although intra-articular bodies are a classic indication for MR arthrography and surgical removal, diagnostic studies are currently sparse. To assess the diagnostic performance of MR arthrography with and without leg traction in detection of intra-articular bodies in the hip joint. MATERIAL AND METHODS The institutional hip arthroscopy data base (2009-2016: 631 hips) was retrospectively reviewed. Inclusion criteria were hips with and without intra-articular bodies and direct MR arthrography performed with and without leg traction. Twenty-one hips with intra-articular bodies constituted the "disease-positive" group. Seventy-nine randomly selected hips without intra-articular bodies constituted the "disease-negative" group. Images were reviewed independently for presence of intra-articular bodies by two blinded readers. Overall diagnosis and location of intra-articular bodies was recorded (peripheral or central). Arthroscopy served as goldstandard for diagnosis and location of intra-articular bodies. Diagnostic performance and kappa statistics of traction MR arthrography with and without traction were calculated. RESULTS For both readers sensitivity/specificity of traction MR arthrography was 86%-95% respectively 90%-91% for overall diagnosis of intra-articular bodies and was 81%-86% respectively 90%-92%for MR arthrogrpahy without traction. For central intra-articular bodies sensitivity was higher for both readers with traction (79%-89%) than without traction (74% each). CONCLUSION MR arthrography with and without traction of the hip is highly accurate in identifying central and peripheral intra-articular bodies. Application of traction was further useful for visualization of centrally located intra-articular bodies.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Orthopaedic, Plastic and Hand Surgery (DOPH) > Clinic of Orthopaedic Surgery

UniBE Contributor:

Schmaranzer, Florian; Lerch, Till and Tannast, Moritz

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1076-6332

Publisher:

Elsevier

Language:

English

Submitter:

Kathrin Aeschlimann

Date Deposited:

27 Aug 2019 15:44

Last Modified:

25 Oct 2019 16:58

Publisher DOI:

10.1016/j.acra.2018.10.008

PubMed ID:

30467072

Uncontrolled Keywords:

Arthrography Hip Hip arthroscopy Loose bodies MRI Synovial osteochondromatosis Traction

BORIS DOI:

10.7892/boris.132060

URI:

https://boris.unibe.ch/id/eprint/132060

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