Toe Spread(TS) = 1-5 toe spread ITS(intermediate toe spread) = 2-4 toe spread PL (Print Length) Toe Spread Factor (TSF) = (Operated TS - Non-Operated TS)/Non-Operated TS Intermediate toe spread factor (ITSF) = (Operatied ITS - Non-Operated ITS)/Non-Operated ITS Print Length Factor (PLF) = (OPL-NPN)/NPL Sciatic Function Index(SFI) = (-38.3xPLF) + (109.5xTSF) + (13.3 ITSF) -8.8 Static Sciatic Ind..
