Postoperative hip center position is associated with gait symmetry in range of axial rotation in dysplasia patients after THA

• DOI: 10.3389/fsurg.2023.1135327
• Publication Date: 2023-05-10T18:59:37Z
• Authors: Yi Hu; Diyang Zou; Mengda Jiang; Qingyu Qian; Huiwu Li; Tsung-Yuan Tsai; Jingwei Zhang
• Keywords: Hip Dysplasia; External rotation; Position (finance)

Background This study aimed to explore whether pre- or postoperative hip structures surgical changes significantly influence range of motion (ROM) symmetry in patients with dysplasia during gait after total arthroplasty (THA) and provide possible suggestions. Methods Fourteen unilateral underwent computed tomography before surgery create three-dimensional models. Pre- acetabular femoral orientations, rotation centers (HRC), lengths were measured. Bilateral ROM level walking THA was quantified using dual fluoroscopy. The flexion-extension, adduction-abduction, axial calculated the index (SI). relationship between SI above anatomical parameters demographic characteristics tested Pearson's correlation linear regression. Results average values for −0.29, −0.30, −0.10, respectively. Significant correlations detected mainly HRC position. A distally placed associated increased adduction-abduction ( R = −0.47, p 0.045), while a medially decreased 0.63, 0.007). regression analysis indicated that horizontal positions determined rotational 2 0.40, 0.015). Normal achieved 17 mm 16 laterally. Conclusions Postoperative position correlated frontal transverse planes THA. Surgical reconstruction laterally may contribute symmetry.