The extensor muscles of the forearm originate from the outer surface of the elbow joint, the overuse of this muscle often results in a condition called epicondylitis lateralis, or tennis elbow. The problem is a chronic lesion at the origin of the extensor tendon called tendinopathy, which is initially painful only during movement, but later even at rest, preventing squeezing and the wrist from bending backwards.
Tennis elbow can be treated with physiotherapy, physical therapy, Non-Steroidal Anti-Inflammatory Drugs such as Ibuprofen and various injections (collagen, steroids, hyaluron tendon), and in some cases dry needling can also be used. Surgical intervention is rarely required. The use of a brace can reduce pain and help with relaxation.