what causes tennis elbow
Tennis elbow is mainly caused by overuse and tiny tears in the tendon on the outside of your elbow, usually from repetitive wrist and forearm movements rather than from a single big injury. It often shows up in people who do repeated gripping, twisting, or wrist extension at work, in sport, or in daily tasks like mouse use or DIY.
What tennis elbow actually is
- Tennis elbow (lateral epicondylitis) involves damage where the forearm extensor tendons attach to the bony bump on the outside of the elbow.
- Repeated strain causes microscopic tendon fiber breakdown, leading to pain and tenderness around that outer elbow area.
Main causes and triggers
1. Repetitive wrist and arm use
- Repeated gripping, wrist extension, and twisting (like turning a screwdriver, using a mouse, or lifting with the palm down) overload the tendon.
- These movements create small tears in the tendon over time, especially when done for long periods without rest.
2. Sports and exercise
- Racket sports (tennis, squash, badminton) are classic triggers, especially with poor backhand technique or unsuitable equipment.
- Other sports that involve strong, repeated forearm and wrist extension (like rowing) can also contribute.
3. Work and daily activities
- Jobs such as plumbing, carpentry, painting, butchering, meat cutting, and some types of manual labor are common sources of repetitive strain.
- Frequent keyboard and mouse use or fine manual tasks like sewing can also contribute, especially without good ergonomics.
Why some people are more at risk
- Age 30–60 is the most commonly affected group, likely because of cumulative tendon stress and reduced tissue resilience.
- People whose work or hobbies require repeated wrist/arm motions several hours a day have a higher risk, particularly if technique, posture, or equipment are not optimal.
Other, less common causes
- Occasionally, a direct injury or a broader condition affecting connective tissue can play a role, but this is less frequent.
- In some cases no single clear trigger is found; the tendon may simply degenerate over time under everyday loads.
Quick takeaway: tennis elbow is usually not about one dramatic event, but about repeated, often small, stresses on the outer elbow tendon from sports, work, or everyday activities that overwork the forearm muscles.
Information gathered from public forums or data available on the internet and portrayed here.