RT Journal Article SR Electronic T1 Avulsion fracture of the calcaneus JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1337 OP E1337 DO 10.1503/cmaj.180248 VO 190 IS 45 A1 Ross Berringer YR 2018 UL http://www.cmaj.ca/content/190/45/E1337.abstract