Radial-sequence magnetic resonance imaging in evaluation of acetabular labrum

Kubo, Toshikazu; Horii, Motoyuki; Harada, Yoshitada; Noguchi, Yasuo; Yutani, Yasutaka; Ohashi, Hirotsugu; Hachiya, Yudo; Miyaoka, Hiroaki; Shoji, Nobuyuki; Hirasawa, Yasusuke

doi:10.1007/s007760050112

Cited by 74 publications

(59 citation statements)

References 18 publications

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“…However, only the radial slices can show the complete circumference of the bony structure of the proximal femur [10,16,26]. Using radial slices in 50 patients with MRA, Pfirrman et al reported the largest alpha angles in cam FAI and pincer FAI appear in the anterior-superior position and they recommend radial slices [19].…”

Section: Discussionmentioning

confidence: 99%

Do Normal Radiographs Exclude Asphericity of the Femoral Head-Neck Junction?

Dudda

Albers

Mamisch

et al. 2009

Clinical Orthopaedics &Amp; Related Research

173

154

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Section: Discussionmentioning

confidence: 99%

Do Normal Radiographs Exclude Asphericity of the Femoral Head-Neck Junction?

Dudda

Albers

Mamisch

et al. 2009

Clinical Orthopaedics &Amp; Related Research

173

154

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“…29 To obtain dGEMRIC indices (T1 GD values) using the indirect MRA, a dual-flip angle (FA) 3D gradient echo (GRE) sequence utilizing inline T1 measurement was performed: ( inversion recovery (IR) method for T1 mapping] has been previously validated for the hip in phantom and in vivo studies. 30,31 The complete MRI examination including Gd-DTPA 2À injection, 45 min of waiting prior to MRA ($30 min) and scans for T1 mapping ($10 min) took approximately 90 min.…”

Section: Mri Analysis With Dgemricmentioning

confidence: 99%

Delayed gadolinium‐enhanced magnetic resonance imaging of cartilage (dGEMRIC) in Femoacetabular impingement

Mamisch

Kain

Bittersohl

et al. 2011

Journal Orthopaedic Research

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Femoroacetabular impingement is a well-described pre-arthritic condition with two main types; cam and pincer. Studies using the open treatment for impingement have described patterns of articular cartilage wear specific to cam and pincer impingement. Assessing articular damage in the hip joint is an important component of treatment. Intravenous gadolidium allows radiologists to perform an indirect assessment of articular cartilage glycosaminoglycan (GAG) content by using a technique called dGEMRIC. Using this indirect assessment of articular cartilage, we compared the dGEMRIC indices in a group of six cam and seven pincer patients to a control group (n ¼ 12) of asymptomatic controls that had no plain MRI findings of osteoarthritis. The superior portion of the hip joint was divided into seven regions from 9 to 3 o'clock. These regions were then subdivided into peripheral and central regions. The cam and pincer groups both had statistically lower dGEMRIC values compared to the control group. The cam group demonstrated not only peripheral but also central involvement of the joint and this was concentrated in the anterior portion of the joint. The pincer group exhibited more global hip involvement with all areas of the hip averaging a dGEMRIC index 28% less than controls. With the use of dGEMRIC more specific patterns of cartilage wear can be elicited in patients with impingement, which may improve patient selection and help better understand the progression of osteoarthithis throughout the hip joint. ß

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“…46 Further - more, it is becoming clear that standard coronal, axial and sagittal MR views are less reliable than radially reconstructed planes perpendicular to the acetabular labrum in detecting early degenerative pathologies of the hip. 46,80 For the assessment of the femoral head-neck morphology, radial reconstructions along the femoral neck axis are described 54,81,82 that improve the understanding of the FAI pathomechanism and correlate well with the prediction of an FAI and intra-operative findings. 83 These imaging techniques are increasingly recognized as an important tool for morphologic assessment of FAI as well as improved techniques to detect early labral and chondral damage in the hip (Figure 9).…”

Section: Diagnosis Of Faimentioning

confidence: 99%

Magnetic resonance imaging of hip joint cartilage and labrum

Zilkens¹,

Miese²,

Jäger³

et al. 2011

Orthop Rev (Pavia)

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Hip joint instability and impingement are the most common biomechanical risk factors that put the hip joint at risk to develop premature osteoarthritis. Several surgical procedures like periacetabular osteotomy for hip dysplasia or hip arthroscopy or safe surgical hip dislocation for femoroacetabular impingement aim at restoring the hip anatomy. However, the success of joint preserving surgical procedures is limited by the amount of preexisting cartilage damage. Biochemically sensitive MRI techniques like delayed Gadolinium Enhanced MRI of Cartilage (dGEMRIC) might help to monitor the effect of surgical or nonsurgical procedures in the effort to halt or even reverse joint damage.

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Radial-sequence magnetic resonance imaging in evaluation of acetabular labrum

Cited by 74 publications

References 18 publications

Do Normal Radiographs Exclude Asphericity of the Femoral Head-Neck Junction?

Do Normal Radiographs Exclude Asphericity of the Femoral Head-Neck Junction?

Delayed gadolinium‐enhanced magnetic resonance imaging of cartilage (dGEMRIC) in Femoacetabular impingement

Magnetic resonance imaging of hip joint cartilage and labrum

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