Dynamic analysis of a healthy amputated femur and a femur with a total hip prosthesis using finite element modeling

Narimane B., Mohammed El Sallah Z., Abdelmadjid M., Abderahmane S., Ismail B., Abdelghani B., ...Daha Fazla

Mechanics of Advanced Materials and Structures, cilt.33, sa.1, 2026 (SCI-Expanded, Scopus)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 1
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1080/15376494.2026.2688366
  • Dergi Adı: Mechanics of Advanced Materials and Structures
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC, DIALNET, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
  • Anahtar Kelimeler: contact pressure, Finite element method (FEM), shear stress, total hip prosthesis, von Mises stress
  • Recep Tayyip Erdoğan Üniversitesi Adresli: Evet

Özet

Lower-limb amputation and prosthetic rehabilitation present major biomechanical challenges that directly affect patient comfort and long-term outcomes. This study aims to compare the biomechanical behavior of two residual limb–prosthesis configurations during normal walking: a model with an intramedullary stem implant and a model without a stem. Finite element simulations were conducted using ABAQUS to assess stress distribution in bone, soft tissues (muscle and stump), as well as contact pressures in the socket–liner interface. The results show that the stemmed configuration enhances load transfer and provides greater mechanical stability, but it also induces high concentrations of Von Mises stresses in the bone and elevated shear and contact stresses in surrounding tissues. In contrast, the stem-free configuration exhibits a more homogeneous stress distribution, closer to physiological loading, albeit with reduced structural stability. These findings suggest that while stemmed implants may improve stability, they carry a higher risk of bone resorption, tissue damage, and discomfort. The study underscores the importance of optimizing stem design and promoting patient-specific approaches to achieve a balance between mechanical performance, safety, and long-term prosthesis durability.