noun
stress fracture
Medical term for a small crack in a bone caused by repetitive force or overuse, rather than a single traumatic injury.
ランナーは疲労骨折のため、しばらく練習を休んだ。
The runner took a break from training for a while due to a stress fracture.
骨折 is a general term for bone fracture, while 疲労骨折 specifically refers to a stress fracture caused by repetitive strain.
Compound of 疲労 (fatigue) and 骨折 (bone fracture), directly describing a fracture resulting from accumulated fatigue or overuse.