Affects the inner side of the elbow and can extend to the surrounding forearm muscles and towards the wrist. It is called medial epicondylitis and the cause is usually an overuse or injury to the flexor muscles of the forearm or muscles used for gripping. It can be associated with tennis elbow (lateral epicondylitis) pain on the outer side of the elbow. When activity that could have initiated the onset of a tendonitis condition is minor the condition of the muscles may have been in a weaken state due to underuse and were just exerted too much and then became damaged by moderate use.
Shockwave therapy is recommended more than injection because of the danger in long-term steroid use. Acupuncture, physiotherapy exercises, osteopathy and chiropractic have also been shown to improve the condition.
Radial shock Wave therapy for lateral epicondylitis. A prospective randomised controlled single-blind study. Eura Medicorphys 2005; 41:17-25 Spacca G, Necozione S, Cacchio A.
Repetitive shock wave therapy for lateral elbow tendinopathy (tennis elbow): a systematic and qualitative analysis Jan D. Rompe, and Nicola Maffulli