Patent ID: 8042439

Claim:
A method of installing a fiberglass cast on and cutting the cast for removal from an individual, comprising the steps of: (a) providing a track ( 10 ) with (i) a top, (ii) a bottom, (iii) a length (L), (iv) an elongate primary guide opening ( 11 ) extending said length of said track, said opening having a width (W) and a selected shape and dimension, (v) an elongate secondary guide opening ( 18 ) extending from said primary opening upwardly to said top, and having a width less than said primary opening; (b) providing a rotatable bit ( 20 ) including (i) a rotatable shaft ( 22 ) with an outer surface shaped and dimensioned to cut through a fiberglass cast, a width less than said width of said secondary guide opening, a distal end ( 27 ), and shaped and dimensioned to move along said secondary opening, (ii) a tracking foot ( 21 ) attached to said distal end of said shaft, having an outer surface ( 25 ), having a width greater than said width of said shaft ( 22 ) and less than said width of said primary opening, free of cutting surfaces, and shaped and dimensioned to generally conform to said shape and dimension of the cross sectional area of said primary guide opening to minimize lateral movement of said foot in said primary guide opening and to permit said foot to move freely along said primary opening; (c) placing said track ( 10 ) on an individual; (d) applying at a first selected time a cast on said individual, said cast covering substantially all of said track ( 10 ); (e) at a second selected time subsequent to said first time, (i) rotating said bit, (ii) moving said foot along said primary opening and said shaft along said secondary opening such that said shaft cuts through said cast.