title: Offensive Lineman's Thumb.
abstract: In brief: An unusual blocking technique caused dislocation of the metacarpophalangeal joints of the thumbs of both a college and a high school football offensive lineman. They were attempting to use their thumbs for additional leverage in obtaining a better mechanical advantage over their opponents. As the rule stands this may be a legal technique, but the authors advise a rule change or clarification to discourage its use.
authors.forename: R M
authors.initials: RM
authors.lastname: Fumich
authors.forename: R J
authors.initials: RJ
authors.lastname: Fink
authors.forename: G R
authors.initials: GR
authors.lastname: Hanna