Biomechanical Analysis of Suture Anchor vs Tenodesis Screw for FHL Transfer

Abstract

Adequate harvest length for FHL transfer could be achieved with a single posterior incision. There was no difference in strength of fixation between suture anchor and biotenodesis screw.

Outcomes After Primary Repair of Insertional Ruptures of the Achilles Tendon

“…All surgeons involved in this study have transitioned to suture anchor fixation over transosseous bone tunnels because of avoidance of a plantar foot incision, avoidance of violation of the plantar fascia, risk of injury to the neurovascular bundle, and improved pullout strength of suture anchors over transosseous bone tunnels. 3,6 With regard to clinical outcomes, the median FAAM Activities of Daily Living score was 100 (range, 42.9-106), and the median FAAM Sports score was 100 (range, 7.1-103.6). The median VR-12 Mental Component Score was 66.9 (range, 45.6-71.8), and the median VR-12 Physical Component Score was 53 (range, 30.8-57.5).…”

Strength of Interference Screw Fixation to Cuboid vs Pulvertaft Weave to Peroneus Brevis for Tibialis Posterior Tendon Transfer for Foot Drop

“…33 Since matched pairs were not used, the sample size was increased to 12 specimens per group, a larger number than other studies. 9,24,36 Two-way analysis of variance (ANOVA) was performed to compare displacement of the tendon transfer during cyclic loading for each technique at 10 different cycle intervals. An independent samples t test was used to compare mean load-to-failure forces.…”

“…10 Potential advantages of interference screw fixation (ISF) are the ability to harvest a shorter graft and the need for less dissection at both the harvest and transfer sites. 9 When patients have significant weakness of eversion, the TP tendon is transferred to the lateral side of the foot. 15,17 A commonly used technique is to secure the tendon transfer via a Pulvertaft weave (PW) technique, 31 suturing to either the peroneus brevis or peroneus tertius tendons.…”

Flexor digitorum longus tendon transfer to the navicular: tendon-to-tendon repair is stronger compared with interference screw fixation

“…Early tendon pullout would be a major complication in a patient, and has been reported in other biomechanical work testing ISF in the foot. Drakos et al simulated FHL transfer to the calcaneum, using a 5.5 mm diameter interference screw [7]. In that study, 3 out of 10 specimens failed within 100 cycles at loads of only 60 N [7].…”

“…Drakos et al simulated FHL transfer to the calcaneum, using a 5.5 mm diameter interference screw [7]. In that study, 3 out of 10 specimens failed within 100 cycles at loads of only 60 N [7].…”