An elbow injury is critical and demands fast health care focus when there is an evident deformity while in the bone, or when there is extreme pain and constrained motion. It’s caused by the inflammation from the sheath that surrounds the thumb’s tendons. Treatment normally incorporates relaxation, splinting, and physiotherapy. https://www.theorthopaedicandpainpractice.com/why-do-my-inner-elbows-hurt/