Soft tissue tension is four times lower in the unstable primary total hip arthroplasty: does this comparison make sense?

Zhou, Jian; Wang, Wanchun; Chen, RuiQi; Tao, Shibin; Zhang, Boyu; Yang, Zhanyu

doi:10.1007/s00264-018-3990-z

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…The kinetic factors that govern whether the implant will dislocate are beyond the scope of clinical study. In particular, the influence of soft tissue, which contributes to creating the resisting moment, has been an under-developed area of clinical investigation [ 13 , 14 ]. Thus, finite element method (FEM) models [ 15 , 16 ] were presented, providing the study of the abductor muscle contribution to total hip prosthesis stability.…”

Section: Introductionmentioning

confidence: 99%

Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty

et al. 2021

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Background Soft tissue tension is treated as a crucial factor influencing the post-THA dislocation. The femoral offset is regarded as one of the major parameters responsible for the stabilization of the prosthesis. It is unclear which soft tissue is mostly affected by the offset changes. Methods A finite element model of the hip was created. The model comprised muscles, bones, a stem, the acetabular component and a liner. The muscles were modelled as a Hill-type musculo-tendon nonlinear springs. Nonlinear analyses of the hip flexion and internal rotation were performed for the two values of the femoral stem offset. Results We observed that the quadratus femoris and gluteus medius produce the largest resisting moment opposing the external load excreted by the surgeon during the intraoperative hip dislocation test. Conclusions An increased femoral offset increases the stretching of the quadratus femoris muscle significantly and provides the growth of its initial passive force. This muscle serves as a stiff band, providing stabilisation of the hip prosthesis, measured during the simulated intraoperative test.

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Section: Introductionmentioning

confidence: 99%

Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty

et al. 2021

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A new seven-axis robotic-assisted total hip arthroplasty system improves component positioning: a prospective, randomized, multicenter study

Tian,

Gao,

Kong

et al. 2024

Sci Rep

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This study compared the radiologic and clinical outcomes of a new seven-axis robotic-assisted total hip arthroplasty (THA) and conventional THA. Hundred and four patients were randomly assigned to two groups—the robotic-assisted THA group (RAS group) and the conventional THA group (CON group). The preoperative and postoperative Harris Hip score (HHS), acetabular inclination, anteversion, femoral offset, and leg length discrepancy (LLD) were compared. During the follow-up, no patients had any complications that could be associated with the use of the robot. The proportion of acetabular cups in the safety zone was significantly higher in the RAS group than that in the CON group. The two groups had significantly different mean absolute difference of inclination and anteversion. There was no significant difference in the postoperative HHSs, changes in HHSs, femoral offset, and lower limb length between the two groups. The seven-axis robotic-assisted THA system is safe and effective, and leads to better acetabulum cup positioning compared to conventional THA. The improvements observed in the HHS, LLD, and femoral offset in the RAS group were similar to those in the CON group.Clinical trial registration time: 19/05/2022.Clinical trial registration number: ChiCTR2200060115.

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Soft tissue tension is four times lower in the unstable primary total hip arthroplasty: does this comparison make sense?

Cited by 2 publications

References 3 publications

Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty

Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty

A new seven-axis robotic-assisted total hip arthroplasty system improves component positioning: a prospective, randomized, multicenter study

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