Morphologic Features of the Acetabulum and Femur

Maruyama, Masaaki; Feinberg, Judy R.; Capello, William N.; DʼAntonio, James A.

doi:10.1097/00003086-200112000-00006

Cited by 213 publications

(42 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This value is consistent with previous measurements reported in the literature ranging from 15° to 20° [3, 11, 21, 22, 26–28, 32, 35, 36] (Table 3). We used the same software package to develop a standardized method to measure the distance from the ischial spine from the sagittal plane, termed the ISI.…”

Section: Discussionsupporting

confidence: 93%

Multilevel Measurement of Acetabular Version Using 3-D CT-generated Models: Implications for Hip Preservation Surgery

Perreira

Hunter

Laird

et al. 2011

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

BackgroundNumerous structural deformities of the acetabulum are associated with hip osteoarthritis (OA). Acetabular retroversion has been implicated in the development of femoroacetabular impingement. However, it is unknown if retroversion occurs from isolated excessive bone in the superior acetabulum or a torsional phenomenon of the entire pelvic segment.Questions/purposesA method was developed to measure acetabular version (AV) using 3-D models thus eliminating positional factors. This method was used to determine if acetabular retroversion is an isolated entity or an effect involving the entire pelvic segment containing the acetabulum.MethodFifty pelvic CT scans were selected from a large database. Measurements were performed for abduction, ischial spine position, and AV at multiple levels. The relationships between anteversion at multiple levels and between midacetabular anteversion and ischial spine position were analyzed.ResultsThe mean upper and midlevel acetabular anteversion values were 14.4° ± 10.5° and 21.3° ± 5.8°, respectively. The mean abduction was 39.7° ± 4.3°. The prevalence of acetabular retroversion was 7%. Females had greater anteversion than males at all levels. Correlations were found between Levels 1 and 4 version (r = 0.74) and the ischial spine index and Level 4 version (r = 0.67).ConclusionsThese data suggest retroversion involves the acetabulum at all levels and includes the entire pelvic segment containing the acetabulum and the ischial spine.Clinical RelevanceThese data are relevant for surgeons in providing targets for normal positioning of the acetabulum during periacetabular osteotomies and acetabular recontouring procedures.

show abstract

Section: Discussionsupporting

confidence: 93%

Multilevel Measurement of Acetabular Version Using 3-D CT-generated Models: Implications for Hip Preservation Surgery

Perreira

Hunter

Laird

et al. 2011

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

show abstract

“…Our measurements of the rim profile unites and confirms previous reports on irregularities of the outer shape of the acetabulum or of a smaller than hemispheric acetabular size [40,56,[65][66][67][68]. One study denoted four configurations along the anterior rim as curved, angular, irregular, or straight [40].…”

Section: Discussionsupporting

confidence: 89%

“…One study denoted four configurations along the anterior rim as curved, angular, irregular, or straight [40]. In agreement with a recent study [68], we measured the irregular configurations, but found the anterior rim depression was never straight.…”

Section: Discussionsupporting

confidence: 89%

“…The outer contour of the acetabulum is variable and some have less than hemispheric acetabular shapes [40,56,[65][66][67][68]. A recent study denoted four configurations along the anterior wall as curved, angular, irregular, or straight [40]. The posterior acetabular wall has been proposed to be hypoplastic, accounting for acetabular retroversion [23].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Acetabular Morphology: Implications for Joint-preserving Surgery

Köhnlein¹,

Ganz

Impellizzeri³

et al. 2009

Clinical Orthopaedics &Amp; Related Research

135

146

View full text Add to dashboard Cite

Appropriate anatomic concepts for surgery to treat femoroacetabular impingement require a precise appreciation of the native acetabular anatomy. We therefore determined (1) the spatial acetabular rim profile, (2) the topography of the articular lunate surface, and (3) the 3-D relationships of the acetabular opening plane comparing 66 bony acetabula from 33 pelves in female and male pelves. The acetabular rim profile had a constant and regular wave-like outline without gender differences. Three prominences anterosuperiorly, anteroinferiorly and posteroinferiorly extended just above hemispheric level. Two depressions were below hemispheric level, of 9°at the anterior wall and of 21°along the posterosuperior wall. In 94% of all acetabula, the deepest extent of the articular surface was within 30°of the anterosuperior acetabular sector. In 99% of men and in 91% of women, the depth of the articular surface was at least 55°along almost half of the upper acetabular cup. The articular surface was smaller in women than in men. The acetabular opening plane was orientated in 21°± 5°for version, 48°± 4°for inclination and 19°± 6°for acetabular tilt with no gender differences. We defined tilt as forward rotation of the entire acetabular cup around its central axis; because of interindividual variability of acetabular tilt, descriptions of acetabular lesions during surgery, CT scanning and MRI should be defined and recorded in relation to the acetabular notch. Acetabular tilt and pelvic tilt should be separately identified. We believe this information important for surgeons performing rim trimming in FAI surgery or performing acetabular osteotomies.

show abstract

“…Limited by the measurement technique, previous geometric morphometric studies were based on the 2D assessment method, which was unable to provide a precise description of the three-dimensional (3D) acetabular cartilage surface [1,[7][8][9][10]. With the lack of quantitative analysis, the acetabular cartilage surface was simply assumed to be hemispherical in shape, and this assumption was widely used to create an acetabular sphere model in a computer simulation analysis of hip joint biomechanics and kinetics [11][12][13].…”

Section: Introductionmentioning

confidence: 99%