Meaning of shin splints

shin' splints"

Pronunciation: [key]
— (used with a pl. v.) Pathol. (used with a pl. v.)Pathol.
  1. a painful condition of the front lower leg, associated with tendinitis, stress fractures, or muscle strain, often occurring as a result of running or other strenuous athletic activity, esp. on a nonresilient surface.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.