Design of Surgical Impaction Instruments Matters.

ABSTRACT:

Background

Femoral stem impaction in total hip arthroplasty is commonly performed by mallet blows on a metal impactor attached to the stem. Factors including the surgeon, the impactor, and the patient can influence the impaction. A wide range of impactors, varying in design and thus in mass and stiffness, are available. However, little is known about their influence on the force transmission and, consequently, about the proportion of the mallet force that ultimately reaches the implant. This study aimed to investigate the force transmission through the impactor for different impactor designs, while investigating different patient-specific femur-tissue systems in situ and in silico.

Methods

The mallet and impactor forces of 9 consecutive blows on seated femoral stems were mea

SUBMITTER: Schlieker PJ 

PROVIDER: S-EPMC12657595 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature