Answer: Tendonitis
Explanation:
"Tendinitis is inflammation or irritation of a tendon" - Mayo Clinic
Tendonitis can occur around any of the tendons in your body; it is most common around the most frequently moved joints such as shoulders, elbows, wrists, knees, and heels. In minor cases tendonitis can be healed with rest and avoidance of the cause of injury however, severe cases might require surgery.
https://www.mayoclinic.org/diseases-conditions/tendinitis/symptoms-causes/syc-20378243