- Spontaneous fractures of normal bone that result from summation of stresses
- Most common lower-extremity stress fracture
- Originally termed "march fracture" (seen in military recruits). Now seen in ballet, football, gymnastics and basketball
- Most common site = shaft (at diaphysis or neck)
- Increased incidence in pes cavus and pes planus foot
- Often negative in early phase. May see thickening of cortex and small periosteal reaction
- Later, a fracture line with sclerotic bone ends, periosteal reaction, widening of fracture gap will be shown.
- Late phase, the bone ends involved are entirely sclerotic
Schepsis AA, Busconi BD. Sports Medicine, 2006.
Baxter DE, Porter DA, Schon L. Baxter's the Foot and Ankle in Sport, 2008.