Supraacetabular Fossa (Pseudodefect of Acetabular Cartilage): Frequency at MR Arthrography and Comparison of Findings at MR Arthrography and Arthroscopy

Dietrich, Tobias Johannes; Suter, Aline; Pfirrmann, Christian W. A.; Dora, Claudio; Fucentese, Sandro F.; Zanetti, M.

doi:10.1148/radiol.12111397

Cited by 57 publications

(33 citation statements)

References 24 publications

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“…Pseudodefects-which should not be confused with osteochondral lesions that might be amenable to surgical intervention-have been described in several joints, including the hip (pseudodefect of the acetabular cartilage [2]) and the elbow (pseudodefect of the capitellum [3] and pseudodefect of the trochlear groove [4]). In the ankle, pseudodefects of the talar dome also have been described [5,6].…”

mentioning

confidence: 99%

The Notch of Harty (Pseudodefect of the Tibial Plafond): Frequency and Characteristic Findings at MRI of the Ankle

Boutin

Chang

Bateni

et al. 2015

American Journal of Roentgenology

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confidence: 99%

The Notch of Harty (Pseudodefect of the Tibial Plafond): Frequency and Characteristic Findings at MRI of the Ankle

Boutin

Chang

Bateni

et al. 2015

American Journal of Roentgenology

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“…A supraacetabular fossa in the acetabular roof (12 o'clock) is an anatomic variant present in about 10% of individuals (125). The fossa can be a defect in the subchondral bone and cartilage, filled with joint fluid (type 1), or only in the subchondral bone, filled with cartilage (type 2) (125).…”

Section: Normal Variantsmentioning

confidence: 99%

“…The fossa can be a defect in the subchondral bone and cartilage, filled with joint fluid (type 1), or only in the subchondral bone, filled with cartilage (type 2) (125). A supraacetabular fossa is distinct from the acetabular fossa and probably represents an age-related developmental morphologic variation, with type 1 supraacetabular fossa undergoing remodeling over time, appearing as a type 2 supraacetabular fossa of the femoral head, cartilage delamination is a frequent finding (44%-52%), most often located directly adjacent to labral tears (Fig 9) (13,121).…”

Section: Normal Variantsmentioning

confidence: 99%

Hip Imaging in Athletes: Sports Imaging Series

et al. 2016

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Hip or groin pain in athletes is common and clinical presentation is often nonspecific. Imaging is a very important diagnostic step in the work-up of athletes with hip pain. This review article provides an overview on hip biomechanics and discusses strategies for hip imaging modalities such as radiography, ultrasonography, computed tomography, and magnetic resonance (MR) imaging (MR arthrography and traction MR arthrography). The authors explain current concepts of femoroacetabular impingement and the problem of high prevalence of cam-and pincer-type morphology in asymptomatic persons. With the main focus on MR imaging, the authors present abnormalities of the hip joint and the surrounding soft tissues that can occur in athletes: intraarticular and extraarticular hip impingement syndromes, labral and cartilage disease, microinstability of the hip, myotendinous injuries, and athletic pubalgia. Hip or groin pain in athletes is common and clinical presentation is often nonspecific. Imaging is a very important diagnostic step in the work-up of athletes with hip pain. This review article provides an overview on hip biomechanics and discusses strategies for hip imaging modalities such as radiography, ultrasonography, computed tomography, and magnetic resonance (MR) imaging (MR arthrography and traction MR arthrography). The authors explain current concepts of femoroacetabular impingement and the problem of high prevalence of cam-and pincer-type morphology in asymptomatic persons. With the main focus on MR imaging, the authors present abnormalities of the hip joint and the surrounding soft tissues that can occur in athletes: intraarticular and extraarticular hip impingement syndromes, labral and cartilage disease, microinstability of the hip, myotendinous injuries, and athletic pubalgia. After reading the article and taking the test, the reader will be able to:n Describe biomechanical implications of torsional malalignment and other atypical forms of hip impingement n Describe the most common MR imaging findings in femoroacetabular impingement and identify anatomic variants n Describe imaging characteristics of a Morel-Lavallée lesion and identify the anatomic compartment where this lesion typically occurs n Identify common stress fractures around the hip joint in athletes and discuss potential complications n Describe features of myotendinous injuries around the hip n Describe the anatomic relationship of the sacrotuberous ligament and the origin of the hamstring tendons n Describe the anatomic structures involved in an athletic pubalgia Accreditation and Designation Statement The RSNA is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians. The RSNA designates this journal-based SA-CME activity for a maximum of 1.0 AMA PRA Category 1 Credit ™ . Physicians should claim only the credit commensurate with the extent of their participation in the activity. Disclosure StatementThe ACCME requires that the RSNA, as an accredited prov...

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“…This is the site of the ligamentum teres insertion. The acetabular roof variants such as the stellate crease, superior acetabular notch, and supraacetabular fossa, have been described as mimickers of acetabular cartilage defects [24]. Stellate crease is a stellate-appearing zone lacking of hyaline cartilage and located above the acetabular notch.…”

Section: What Areas Does Ocl Involve?mentioning

confidence: 99%

Osteochondral Lesions of Major Joints

Durur-Subasi¹,

Karakaya²,

Yıldırım³

2015

Eurasian J Med

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Supraacetabular Fossa (Pseudodefect of Acetabular Cartilage): Frequency at MR Arthrography and Comparison of Findings at MR Arthrography and Arthroscopy

Abstract: The high frequency of SAF on MR arthrograms (10.5%), the absence of subchondral reaction, and the absence of cartilage defects at arthroscopy indicate that the SAF of the acetabulum likely represents a variant.

Cited by 57 publications

References 24 publications

The Notch of Harty (Pseudodefect of the Tibial Plafond): Frequency and Characteristic Findings at MRI of the Ankle

The Notch of Harty (Pseudodefect of the Tibial Plafond): Frequency and Characteristic Findings at MRI of the Ankle

Hip Imaging in Athletes: Sports Imaging Series

Osteochondral Lesions of Major Joints

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