Table 1 Mean (SD) values of the offsets (in mm).

From: Definition and reliability of 3D acetabular and global offset measurements from bi-plane X-rays

ACS

Medio-Lat Axis ACS

Origin ACS

Ant-post

Mean (SD)

Medio-Lat

Mean (SD)

Vertical

Mean (SD)

Global

Mean (SD)

A1

ML1

SSC

53.2 (13.5)

89.6 (7.1)

85.5 (14.2)

131.9 (10.3)

A2

ML1

PSYM

47.5 (8.2)

88.8 (5.8)

29.6 (8.2)

131.2 (9.3)

A2

ML2

PSYM

44.4 (12.8)

89.6 (6.1)

30 (9.6)

131.9 (9.5)

A1

ML2

SSC

55 (15.1)

89.6 (6.1)

83.3 (18.5)

131.9 (9.5)

  1. TCS: Technical Coordinate System; ACS: Anatomical Coordinate System; T1,2,3: technical coordinate systems; A1,2,3: Anatomical coordinate systems; ML1,2: definitions of the medio-lateral axis; SSC: sacral slope centre; PSYM: pubic symphysis; ACET: acetabulum.