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26.06.2019 | Orthopaedic Surgery

Hip abductor tendon pathology visualized by 1.5 versus 3. 0 Tesla MRIs

Zeitschrift:
Archives of Orthopaedic and Trauma Surgery
Autoren:
Nicola Oehler, Julia Kristin Ruby, André Strahl, Rainer Maas, Wolfgang Ruether, Andreas Niemeier
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s00402-019-03228-1) contains supplementary material, which is available to authorized users.

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Abstract

Introduction

Hip abductor tendinopathies are becoming increasingly recognized as clinically relevant disorders. However, knowledge about prevalence of abductor tendinopathies and associated disorders of adjacent hip articular and periarticular structures is limited. In this context, the relative diagnostic value of 1.5-T vs. 3.0-T MRI magnets has not been studied yet.

Materials and methods

Pelvic MRI scans of 1000 hips from 500 consecutive unselected patients (341 in 3.0-T/159 in 1.5-T magnets, with standardized scanning protocols over the entire study period) were analysed for the detection of abductor tendinosis, calcifying tendinitis, partial or full-thickness tears of the M. gluteus medius (GMed) and/or -minimus (GMin) and trochanteric bursitis (TB). The occurrence of these lesions was correlated to the presence of muscle atrophy (MA) of GMed/GMin, hip joint effusion (JE) and osteoarthritis (OA).

Results

Peritrochanteric lesions were observed with a prevalence of 31.4% of all patients (22.3% of all hips). TB occurred almost exclusively in the presence of GMed/GMin tendinopathies. Compared to overall prevalence, patients with MA displayed lesions of GMed/GMin or TB in 70%, patients, with OA in 30% and with JE in 23%. These lesions occurred significantly more often ipsilateral to MA and OA than contralateral (MA: 76.8% vs. 23.2%, p < 0.001; OA: 64.4% vs. 35.6%, p = 0.03; JE: 62.7% vs. 37.3%, p = 0.08). Significantly more tendon lesions, in particular specific radiological diagnoses like partial/full-thickness tears, were detected by 3.0-T MRI than by 1.5 T (p = 0.019).

Conclusions

Peritrochanteric lesions are a prevalent pathology that should specifically be looked for, preferably by 3.0-T MRI, independent of concomitant hip joint pathology.

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Supplementary file1 (DOCX 35 kb)
402_2019_3228_MOESM1_ESM.docx
Literatur
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