The role of the anterior talofibular ligament area as a morphological parameter of the chronic ankle sprain - Mun, Jong-Uk; Cho, Hyung Rae; Sung, Yoo Jun; Kang, Keum Nae; Lee, Jungmin; Joo, Young; Kim, Young Uk (Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association, 2020)