Changes of acetabular angle at different positions after total hip arthroplasty

doi:10.3969/j.issn.2095-4344.2016.26.003

Abstract

Abstract:

BACKGROUND: During total hip arthroplasty, placement angle of acetabular prosthesis is significant for clinical curative effects.

OBJECTIVE: To investigate the abduction angle and anteversion angle of acetabular prosthesis at different positions during total hip arthroplasty and related influential factors.

METHODS: Thirty-five patients undergoing total hip arthroplasty were included in this study, containing 21 males and 14 females, at the age of 51-75 years old. The same patient at different positions underwent X-ray examination, including standing anteroposterior pelvis radiographic imaging, standing lateral radiographic imaging and supine anteroposterior pelvis radiographic imaging. Abduction angle and anteversion angle of acetabular prosthesis were measured.

RESULTS AND CONCLUSION: (1) Abduction angle and anteversion angle at standing position were bigger than that at supine position (48.47°, 45.89°; 12.44°, 6.17°; P < 0.05). (2) The change in anteversion angle was associated with pelvic incidence angle and pelvic tilt angle. The change in abduction angle was associated with pelvic obliquity. (3) The range of abduction angle (40±10)° and anteversion angle (15±10)° of acetabular prosthesis was identified as security zone. (4) Results suggested that there were changes in acetabular abduction angle and anteversion angle between supine anteroposterior pelvis radiographic imaging and standing anteroposterior pelvis radiographic imaging after total hip arthroplasty. Acetabular angle was associated with pelvic obliquity, pelvic incidence and pelvic tilt.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Prostheses and Implants, Arthroplasty, Replacement, Hip, Tissue Engineering

CLC Number:

R318

Tang Zhi, Gui Bin-jie, Ding Nan, Rong Gen-xiang, Gao Jie, Wang Si-sheng. Changes of acetabular angle at different positions after total hip arthroplasty[J]. Chinese Journal of Tissue Engineering Research, 2016, 20(26): 3817-3822.

Figures/Tables 3

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