<prompt> Stress fracture occurs most commonly in:MetatarsalsMetacarpalsCalcaneumTalus  <response>: Ans. a MetatarsalsRef: Essential Orthopedics Maheshwari, 5th edn 167 Stress fractures often develop from overuse, such as from high-impact sports like distance running or basketball. Most stress fractures occur in the weight-bearing bones of the foot and lower leg. Studies show that athletes participating in tennis, track and field, gymnastics, dance, and basketball are at high risk for stress fractures. It most commonly occurs in metatarsals. It is seen due to imbalance between load and resistance on the bone. 2 Types of stress fracture: FATIGUE : Increased load, Normal resistance of bone INSUFFICIENCY : Normal load, Decreased resistance of bone Examples of stress fracture: Lower extremity: March - 2nd MT 3rd MT Upper extremity: Olecranon 