Patient-Specific Restoration of Biomechanics in Total Hip Arthroplasty

Weber, Markus; Grifka, Joachim; Renkawitz, Tobias

doi:10.1055/a-0725-8527

Cited by 2 publications

(1 citation statement)

References 44 publications

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“…The 3D CT measueres of FAA can be a useful method for accurate diagnosis and follow-up of femoral anteversion (34,35). Besides alignment guides, rulers, and other tools, intraoperative fluoroscopy and computer-guided navigation allow the surgeon to intraoperatively analyze leg length and offset changes in relation to the FAA (36)(37)(38)(39)(40). Lim et al confirmed that the femoral anteversion decreases after TKA probably due to the fact that references for FAA measurement the posterior parts of the femoral condyles are altered (29).…”

Section: Discussionmentioning

confidence: 99%

Clinical importance and sex differences of the femoral anteversion angle

Kapur

Dračić

Gračić

2019

JHSCI

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Introduction: The Femoral angle of anteversion (FAA) is responsible for the medial and anterior direction of the femoral neck and therefore the femoral head towards the acetabulum. The aim of this study was to determine the difference in FAA between male and female samples, the correlation between the FAA and biomechanically relevant parameters and to provide a review of relevant clinical features related to FAA. Methods: We included 100 human dry femora and analyzed FAA, Angle of Inclination (AI), Femoral Head Diameter (FHD), Femoral Biomechanical Length (FBL) and Linear Condylar Parameters (Epicondylar Breadth Width (EBW), Lateral Condyle Depth and Medial Condyle Depth). The measurements were made using a goniometer, sliding calipers and pieces of colored string. Results: Mean FAA values were 9.84±7.97° and 8.72±8.23° for the male and female samples, respectively (p<0.05). FAA and AI in both male and female correlated negatively (-0.076), while there was a positive correlation between FAA and FHD (0.069), FAA and FBL (0.072), FAA and EBW (0.029), while the correlation was negative between FAA and LCD (-0.072), FAA and MCD (-0.063). Conclusion: The difference in FAA between male and female femora was found to be significant. This finding may help better understanding such as hip impingement, total hip arthroplasty failure, and design of femoral endoprosthesis parts.

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Section: Discussionmentioning

confidence: 99%

Clinical importance and sex differences of the femoral anteversion angle

Kapur

Dračić

Gračić

2019

JHSCI

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Offset restoration in total hip arthroplasty: Important: A current review

Oommen

2024

World J Orthop

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Normal vertical and horizontal offset is essential for hip biomechanics, muscle functioning and gait pattern. Total hip arthroplasty (THA) should aim to restore normal offset with implantation of femoral and acetabular components. This would be possible with proper preoperative planning, templating and ensuring implant options are available for offset restoration. Templating is essential for understanding the vertical and horizontal offset change, especially in hip arthritis presenting late with significant limb length discrepancy at THA. Planning should include appropriate soft tissue releases and the use of ideal implants to achieve restoration of horizontal and vertical offset. Under correction of horizontal offset at THA for fracture neck of femur could result in abductor fatigue, limp and increased wear. Restoration of horizontal offset is imperative at THA for a fractured neck of the femur to achieve optimal abductor function. Horizontal offset is necessary for optimal abductor muscle tension and function. Revision THA for acetabular bone loss would require hip center restoration with the acetabular and femoral offset correction to achieve limb length correction and abductor length. The inability to achieve vertical and horizontal offset correction could lead to dislocation or signs of abductor fatigue. Careful vertical and horizontal femur offset restoration is required for normal hip biomechanics, decreased wear and increased longevity.

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Patient-Specific Restoration of Biomechanics in Total Hip Arthroplasty

Cited by 2 publications

References 44 publications

Clinical importance and sex differences of the femoral anteversion angle

Clinical importance and sex differences of the femoral anteversion angle

Offset restoration in total hip arthroplasty: Important: A current review

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