Screw Angulation and Insertion Sequence Increase Interfragmentary Compression When Using Plates for Midfoot Arthrodesis: Foam-Surrogate and Cadaveric Validation.

ABSTRACT:

Background

Achieving interfragmentary compression and stability is critical for successful bone healing in fracture fixation and arthrodesis procedures. Modern orthopaedic plating systems incorporating variable-angle screw designs offer greater versatility; however, the impact of screw trajectory on interfragmentary compression and contact area has not been adequately explored. We questioned if the resultant forces applied by screw orientation would follow the basic principles of vector geometry.

Methods

Interfragmentary compression and contact area were quantified in foam bone surrogate osteotomy models using plates allowing maximum screw angulation of either 15 or 30 degrees, with screws inserted at various angles. Cadaveric second-tarsometatarsal (TMT) arthrodesis constru

SUBMITTER: Johnson J 

PROVIDER: S-EPMC12576148 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature