Displacement of the Hip Center of Rotation After Arthroplasty of Crowe III and IV Dysplasia : A Radiological and Biomechanical Study
| Autor: | Mansour Abolghasemian, Allan E. Gross, Saeid Samiezadeh, Habiba Bougherara, Mohammad Taghi Ghazavi, Davood Jafari |
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| Rok vydání: | 2023 |
| Předmět: |
musculoskeletal diseases
Rotation Arthroplasty Replacement Hip medicine.medical_treatment Joint reaction force Radiography Inferior displacement Femoral head dysplasia abductor muscle force medicine Humans Computer Simulation Orthopedics and Sports Medicine Hip Dislocation Congenital Instant centre of rotation business.industry Anatomy medicine.disease Arthroplasty Biomechanical Phenomena joint reaction force medicine.anatomical_structure Dysplasia Radiological weapon hip center of rotation business |
| Popis: | To study the direction and biomechanical consequences of hip center of rotation (HCOR) migration in Crowe type III and VI hips after total hip arthroplasty, post-operative radiographs and CT scans of several unilaterally affected hips were evaluated. Using a three-dimensional model of the human hip, the HCOR was moved in all directions, and joint reaction force (JRF) and abductor muscle force (AMF) were calculated for single-leg stance configuration. Comparing to the normal side, HCOR had displaced medially and inferiorly by an average of 23.4% and 20.8%, respectively, of the normal femoral head diameter. Significant decreases in JRF (13%) and AMF (46.13%) were observed in a presumptive case with that amount of displacement. Isolated inferior displacement had a small, increasing effect on these forces. In Crowe type III and IV hips, the HCOR migrates inferiorly and medially after THA, resulting in a decrease in JRF, AMF, and abductor muscle contraction force. |
| Databáze: | OpenAIRE |
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