The fibular groove deep and its relationship with the superior peroneal retinaculum morphology in peroneal tendon stability: A cadaveric study

Zárate Leal M.F.; Belling Segovia D.A.; Triviño-Arias J.; Gómez M.C.; Díaz T.; Martin Oliva X. · Foot and Ankle Surgery (2026) · DOI: 10.1016/j.fas.2026.01.002

Resumen

Background Peroneal tendons dislocation is an infrequent and misdiagnosed pathology. The aim of this study was to establish the relevance of the anatomic characteristics of fibular groove and the superior peroneal retinaculum, and its relationship with peroneal tendon stability. Methods: The present study was conducted on 14 lower extremities of fresh defrosted cadavers. Anatomical parameters of the fibula, peroneal tendons, superior peroneal retinaculum and minimal deep required to achieve peroneal tendon stability in the peroneal groove were done. Results: A statistically significant difference in the minimum depth required to achieve peroneal sulcus stability was found between groups with superior peroneal retinaculum type I and V (p = 0.015). Conclusions: Our findings provide novel anatomical and morphometric evidence supporting the relevance of superior peroneal retinaculum morphology, particularly type I, in promoting peroneal tendon groove stability. Level of Evidence IV