Biomechanical Evaluation of Tarsometatarsal Fusion Comparing Crossing Lag Screws and Lag Screw With Locking Plate.

ABSTRACT:

Background

Tarsometatarsal (TMT) arthrodesis is a common operative procedure for end-stage arthritis of the TMT joints. To date, there is no consensus on the best fixation technique for TMT arthrodesis and which joints should be included.

Methods

Thirty fresh-frozen feet were divided into one group (15 feet) in which TMT joints I-III were fused with a lag screw and locking plate and a second group (15 feet) in which TMT joints I-III were fused with 2 crossing lag screws. The arthrodesis was performed stepwise with evaluation of mobility between the metatarsal and cuneiform bones after every application or removal of a lag screw or locking plate.

Results

Isolated lag-screw arthrodesis of the TMT I-III joints led to significantly increased stability in every joint (P

SUBMITTER: Ettinger S 

PROVIDER: S-EPMC8772252 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature