Mechanical Evaluation of Posterior Wall Acetabular Facture Fixation: Patient-Specific Implants Versus Conventional Implants.

ABSTRACT: The aim of the study was to design a standardized mechanical test setup and a corresponding finite element analysis to assess the stability and strength of both patient-specific and conventional implants for posterior wall acetabular fractures. Ten synthetic hemi-pelves with posterior wall fractures were biomechanically tested with two types of implants: a patient-specific implant (PSI) and a seven-hole plate conventional implant. 3D-printed guides ensured reproducibility. The models were tested using an Instron machine. The protocol involved 10,000 cyclic load cycles with static tests at 3200 N before and after to simulate early postoperative weightbearing conditions. Construct stiffness, stiffness over cyclic loading and fracture gapping were measured and compared. A finite element analy

SUBMITTER: Oldhoff MGE 

PROVIDER: S-EPMC12701721 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature