De Leeuw PAJ, Vega J, Karlsson J, Dalmau-Pastor M. The posterior fibulotalocalcaneal ligament complex: a forgotten ligament. Knee Surg Sports Traumatol Arthrosc. 2021 May;29(5):1627-1634. doi: 10.1007/s00167-020-06431-5. Epub 2021 Jan 24. PMID: 33486559; PMCID: PMC8038989.