Impacted \Im*pact"ed\, a. Driven together or close.
Impacted fracture (Surg.), a fracture in which the fragments are driven into each other so as to be immovable.
Source: Webster's Revised Unabridged Dictionary (1913)
Impact \Im*pact"\, v. t. [imp. & p. p. Impacted; p. pr. & vb. n. Impacting.] [L. impactus, p. p. of impingere to push, strike against. See Impinge.] To drive close; to press firmly together: to wedge into a place. --Woodward.