Morphologic features of the acetabulum and femur

Anteversion angle and implant positioning

Masaaki Maruyama, Judy R. Feinberg, William Capello, James A. D'Antonio

Research output: Contribution to journalArticle

161 Citations (Scopus)

Abstract

Morphologic features of the hips, in particular those features germane to determination of acetabular and femoral anteversion angles and femoral head offset, were studied in 50 male and 50 female human skeletons with bilateral normal joints. Four distinct configurations were identified relative to the anterior acetabular ridge. The majority (121, 60.5%) were curved; 51 (25.5%) were angular; 19 (9.5%) were irregular; and nine (4.5%) were straight. The acetabular anteversion angle measured 19.9° ± 6.6° (range, 7°-42°) and was significantly larger in females (21.3° ± 7.1°) versus males (18.5° ± 5.8°). The notch acetabular angle, which can be identified easily intraoperatively, was defined as the angle created at the intersection of a line from the sciatic notch along the posterior acetabular ridge and a line from the posterior to the anterior acetabular wall. This angle is almost perpendicular (89.0° ± 3.5°) and, therefore, may provide an accurate estimate of acetabular anteversion during cup placement. Awareness of the anatomic differences between genders for acetabular anteversion angle, anterolateral bowing of the femur, and neck shaft angle may help reduce the relatively higher incidence of dislocation in females and may lead to different implant designs for male and female patients.

Original languageEnglish (US)
Pages (from-to)52-65
Number of pages14
JournalClinical Orthopaedics and Related Research
Issue number393
StatePublished - Jan 1 2001
Externally publishedYes

Fingerprint

Acetabulum
Femur
Thigh
Femur Neck
Skeleton
Hip
Joints
Incidence

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

Cite this

Morphologic features of the acetabulum and femur : Anteversion angle and implant positioning. / Maruyama, Masaaki; Feinberg, Judy R.; Capello, William; D'Antonio, James A.

In: Clinical Orthopaedics and Related Research, No. 393, 01.01.2001, p. 52-65.

Research output: Contribution to journalArticle

@article{c9049df8110d43c88ddcf1f1088a03fa,
title = "Morphologic features of the acetabulum and femur: Anteversion angle and implant positioning",
abstract = "Morphologic features of the hips, in particular those features germane to determination of acetabular and femoral anteversion angles and femoral head offset, were studied in 50 male and 50 female human skeletons with bilateral normal joints. Four distinct configurations were identified relative to the anterior acetabular ridge. The majority (121, 60.5{\%}) were curved; 51 (25.5{\%}) were angular; 19 (9.5{\%}) were irregular; and nine (4.5{\%}) were straight. The acetabular anteversion angle measured 19.9° ± 6.6° (range, 7°-42°) and was significantly larger in females (21.3° ± 7.1°) versus males (18.5° ± 5.8°). The notch acetabular angle, which can be identified easily intraoperatively, was defined as the angle created at the intersection of a line from the sciatic notch along the posterior acetabular ridge and a line from the posterior to the anterior acetabular wall. This angle is almost perpendicular (89.0° ± 3.5°) and, therefore, may provide an accurate estimate of acetabular anteversion during cup placement. Awareness of the anatomic differences between genders for acetabular anteversion angle, anterolateral bowing of the femur, and neck shaft angle may help reduce the relatively higher incidence of dislocation in females and may lead to different implant designs for male and female patients.",
author = "Masaaki Maruyama and Feinberg, {Judy R.} and William Capello and D'Antonio, {James A.}",
year = "2001",
month = "1",
day = "1",
language = "English (US)",
pages = "52--65",
journal = "Clinical Orthopaedics and Related Research",
issn = "0009-921X",
publisher = "Springer New York",
number = "393",

}

TY - JOUR

T1 - Morphologic features of the acetabulum and femur

T2 - Anteversion angle and implant positioning

AU - Maruyama, Masaaki

AU - Feinberg, Judy R.

AU - Capello, William

AU - D'Antonio, James A.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Morphologic features of the hips, in particular those features germane to determination of acetabular and femoral anteversion angles and femoral head offset, were studied in 50 male and 50 female human skeletons with bilateral normal joints. Four distinct configurations were identified relative to the anterior acetabular ridge. The majority (121, 60.5%) were curved; 51 (25.5%) were angular; 19 (9.5%) were irregular; and nine (4.5%) were straight. The acetabular anteversion angle measured 19.9° ± 6.6° (range, 7°-42°) and was significantly larger in females (21.3° ± 7.1°) versus males (18.5° ± 5.8°). The notch acetabular angle, which can be identified easily intraoperatively, was defined as the angle created at the intersection of a line from the sciatic notch along the posterior acetabular ridge and a line from the posterior to the anterior acetabular wall. This angle is almost perpendicular (89.0° ± 3.5°) and, therefore, may provide an accurate estimate of acetabular anteversion during cup placement. Awareness of the anatomic differences between genders for acetabular anteversion angle, anterolateral bowing of the femur, and neck shaft angle may help reduce the relatively higher incidence of dislocation in females and may lead to different implant designs for male and female patients.

AB - Morphologic features of the hips, in particular those features germane to determination of acetabular and femoral anteversion angles and femoral head offset, were studied in 50 male and 50 female human skeletons with bilateral normal joints. Four distinct configurations were identified relative to the anterior acetabular ridge. The majority (121, 60.5%) were curved; 51 (25.5%) were angular; 19 (9.5%) were irregular; and nine (4.5%) were straight. The acetabular anteversion angle measured 19.9° ± 6.6° (range, 7°-42°) and was significantly larger in females (21.3° ± 7.1°) versus males (18.5° ± 5.8°). The notch acetabular angle, which can be identified easily intraoperatively, was defined as the angle created at the intersection of a line from the sciatic notch along the posterior acetabular ridge and a line from the posterior to the anterior acetabular wall. This angle is almost perpendicular (89.0° ± 3.5°) and, therefore, may provide an accurate estimate of acetabular anteversion during cup placement. Awareness of the anatomic differences between genders for acetabular anteversion angle, anterolateral bowing of the femur, and neck shaft angle may help reduce the relatively higher incidence of dislocation in females and may lead to different implant designs for male and female patients.

UR - http://www.scopus.com/inward/record.url?scp=85062115592&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85062115592&partnerID=8YFLogxK

M3 - Article

SP - 52

EP - 65

JO - Clinical Orthopaedics and Related Research

JF - Clinical Orthopaedics and Related Research

SN - 0009-921X

IS - 393

ER -