This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Amputations and Spos Injury, Subject name: Orthopaedics
Most common cause of noninseional tendonitis of tendoachilles is: 
Select and explain. 
A. Overuse, B. Improper shoe wear, C. Runners and jumpers, D. Steroid injections
C: Runners and jumpers
Answer: C: Runners and jumpers 
Explanation: ACHILLES TENDONITIS a. Inseional tendonitis Involves inseion site May be associated with retrocalcaneal bursitis, Haglund deformity or pump bump. Overuse is the cause. b. Noninseional tendenitis Involves water shed area of circulation (2-6 cm above the inseion) Seen in runners and jumpers It is also the commonest site of TA rupture.