Understanding Tennis Elbow Tennis elbow, or lateral epicondylitis, is a tendinopathy affecting the common extensor tendon where it attaches to the outer elbow. Despite its name, tennis causes only a small fraction of cases. Any repetitive gripping or wrist extension activity can cause the condition: typing, mouse use, tool use, and manual labor are common culprits. The condition involves degeneration of the tendon rather than acute inflammation, though inflammation may be present early. The extensor carpi radialis brevis is most commonly affected. Pain occurs with gripping, lifting, and wrist extension. Opening jars, turning doorknobs, and shaking hands often hurt. Research from the British Journal of Sports Medicine shows that eccentric exercise is highly effective for tennis elbow, with success rates of 70-90%. A Cochrane review found that exercise therapy produced better long-term outcomes than corticosteroid injection. Progressive loading is essential for tendon healing. (PubMed) Contributing Factors Repetitive wrist extension: Activities that repeatedly extend the wrist against resistance load the common extensor tendon. Gripping: Sustained or repeated gripping, especially with the forearm pronated, stresses the tendon attachment. Poor technique: In racquet sports, poor backhand technique transmits excessive force to the elbow. Training errors: Rapid increases in activity volume without adequate adaptation time. Start your 14-day free trial to access tennis elbow programs. Wrist and Forearm Exercises These exercises load and strengthen the affected tendons. Wrist Extension JME 200 Rotate your wrist both up and down while maintaining the same position of your forearm. Wrist Circles JME 211 Holding onto both hands in front of your body, create circles with your wrists. Forearm Stretch JME 196 Hold onto your hand to find a gentle stretch in your forearm and wrist. Don't force any range of motion - listen to your body. Wrist Flexion/Extension JME 200 Rotate your wrist both up and down while maintaining the same position of your forearm. Grip and Elbow Exercises These exercises address grip strength and elbow stability. Elbow Flexion JME 221 With your arm extended to your side, bend at your elbow to raise and lower your hand. Forearm Rotation JME 208 With your arms out in front of you, rotate your palms both up and down. Finger Movements JME 204 Open and close your hand. Wrist Pronation/Supination JME 209 With your arms to your side, rotate your palms both left and right. Eccentric Exercise Protocol Eccentric exercise (lowering against resistance) is particularly effective for tennis elbow. Hold a light weight with the affected arm supported, palm down. Use the other hand to lift the wrist into extension. Slowly lower under control over 3-5 seconds. Repeat 10-15 times, 3 sets, twice daily. Some discomfort during eccentric exercise is acceptable and even expected. Sharp pain or significant worsening indicates too much load. Adjust weight accordingly. Common Mistakes Complete rest: Avoiding all loading leads to further tendon weakening. Appropriate loading promotes healing. Stretching aggressively: Aggressive wrist flexion stretches can irritate the tendon attachment. Stretch gently. Cortisone dependence: Injections provide short-term relief but may impair long-term healing. Exercise produces better long-term outcomes. Returning too quickly: Premature return to provocative activities causes recurrence. Progress gradually. Activity Modification Ergonomics: Use a vertical mouse or trackball to reduce wrist extension during computer work. Keep wrists neutral when typing. Grip modification: Use larger grip handles to reduce grip force required. Padded grips help. Load management: Reduce frequency and duration of provocative activities. Take breaks during repetitive tasks. Bracing A counterforce brace worn just below the elbow can reduce strain on the tendon during activities. It does not replace exercise but can help manage symptoms during recovery. Use during provocative activities rather than constantly. Progress Timeline Tennis elbow often takes 6-12 months to fully resolve. Initial improvement typically occurs within 4-6 weeks of consistent exercise. The tendon heals slowly due to limited blood supply. Patience and consistent loading produce the best outcomes. Prevention After recovery, continue forearm strengthening 2-3 times weekly. Maintain good ergonomics. Warm up before demanding activities. Address technique issues in racquet sports. These measures reduce recurrence risk. Start your 14-day free trial and fix tennis elbow with simplmobility.