Herniation pit of the femoral neck.

American Journal of Roentgenology (Impact Factor: 2.74). 07/1982; 138(6):1115-21. DOI: 10.2214/ajr.138.6.1115
Source: PubMed

ABSTRACT A round to oval radiolucency surrounded by a thin zone of sclerosis is often identified in the proximal superior quadrant of adult femoral necks. Although usually recognized as incidental and benign, these radiolucencies may be of clinical concern in patients with hip symptoms. The true nature and genesis of these radiolucencies have not been explained. This article relates these radiolucencies to common acquired degenerative changes developing on the surface of the femoral neck in adults (the reaction area) and shows that the radiolucency represents a subcortical pit or cavity formed by herniation of soft tissue contents through defects in the surface of the reaction area. The formation of this pit and its relation to the commonly seen femoral neck radiolucency has not been previously described. The name "herniation pit" is suggested for these lesions.

  • [Show abstract] [Hide abstract]
    ABSTRACT: Die gelenkerhaltende operative Behandlung des femoroazetabulären Impingements der Hüfte hängt von verschiedenen Faktoren ab. Neben der Erfahrung des Operateurs sind insbesondere der Impingementtyp, der Schweregrad der femoralen und azetabulären Deformität und der Zustand des Labrum acetabulare entscheidende Faktoren für die Auswahl eines arthroskopischen, minimalinvasiv offenen oder chirurgisch-luxierenden Vorgehens.
    Arthroskopie 01/2009; 22(4).
  • [Show abstract] [Hide abstract]
    ABSTRACT: Focal lesions in bone are very common and many of these lesions are not bone tumors. These bone tumor mimickers can include numerous normal anatomic variants and non-neoplastic processes. Many of these tumor mimickers can be left alone, while others can be due to a significant disease process. It is important for the radiologist and clinician to be aware of these bone tumor mimickers and understand the characteristic features which allow discrimination between them and true neoplasms in order to avoid unnecessary additional workup. Knowing which lesions to leave alone or which ones require workup can prevent misdiagnosis and reduce patient anxiety.
    Indian Journal of Radiology and Imaging 07/2014; 24(3):225-36.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Introduction. The goal of this study was to research the association of femoral bumps and herniation pits with the overlap-ratio of the cross-over sign. Methods. Pelvic X-rays and CT-scans of 2925 patients with good assessment of the anterior and the posterior acetabular wall and absence of neutral pelvic tilt were enrolled in the investigation. Finally pelvic X-rays were assessed for the presence of a positive cross-over sign, and CT-scans for a femoral bump or a herniation pit. Additionally, if a positive cross-over sign was discovered, the overlap-ratio was calculated. Results. A femoral bump was found in 53.3% (n = 1559), and a herniation pit in 27.2% (n = 796) of all hips. The overlap-ratio correlated positively with the presence of a femoral bump, while a negative correlation between the overlap-ratio and the presence of a herniation pit was found. The latter was significantly more often combined with a femoral bump than without. Conclusions. We detected an increased prevalence of femoral bump with increasing overlap-ratios of the cross-over sign indicating a relation to biomechanical stress. The observed decreased prevalence of herniation pits with increasing overlap-ratios could be explained by reduced mechanical stress due to nontightened iliofemoral ligament in the presence of retroversion of the acetabulum.
    Advances in Orthopedics. 01/2014; 2014:1-5.


Available from