RT Journal Article SR Electronic T1 Ligament injuries and their treatment 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 59 OP 59 DO 10.1136/bjsm.20.2.59 VO 20 IS 2 A1 B. Helal YR 1986 UL http://bjsm.bmj.com/content/20/2/59.1.abstract AB