RT Journal Article SR Electronic T1 Surgical versus conservative treatment for acute ankle sprains JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 77 OP 78 DO 10.1136/bjsports-2011-090722 VO 46 IS 1 A1 Steven J Kamper A1 Sanneke JM Grootjans YR 2012 UL http://bjsm.bmj.com/content/46/1/77.abstract AB