Tennis elbow
Also called: lateral epicondylitis, lateral elbow tendinopathy. Clinical name: Lateral epicondylitis (lateral elbow tendinopathy).
Tennis elbow is pain on the outside of the elbow from overloaded wrist tendons — often from gripping tasks, not tennis. It usually settles with rest and strengthening, though recovery can take months to over a year.
What it actually is
Tennis elbow is pain on the outside of the elbow. It comes from overload of the tendons that straighten your wrist — the ones that anchor on the bony bump on the outer side of the elbow, where the forearm’s extensor muscles attach. The clinical name is lateral epicondylitis, though many clinicians now prefer lateral elbow tendinopathy, because it’s more of a wear-and-overload problem in the tendon than the pure inflammation the “-itis” ending suggests. The tendon most often involved is the one attached to a forearm muscle called the ECRB (AAOS).
Despite the name, most cases have nothing to do with tennis. It’s usually brought on by everyday gripping and lifting your arm wasn’t ready for — a stretch of DIY, a job on the tools, long hours at a keyboard and mouse, or any repeated task that grips and twists the wrist. Painters, plumbers and carpenters are among those particularly prone to it (AAOS).
The tell-tale story is pain on the outer elbow when you grip, lift or twist — shaking hands, lifting a kettle, turning a screwdriver — often with a weaker grip and sometimes a bit of tenderness or swelling over the bony point. It builds gradually rather than after a single moment, and it can be stubborn: it usually settles with rest, but sometimes lasts over a year (NHS). That’s why the fix is rarely one treatment — it’s calming the tendon down, then patiently rebuilding what it can tolerate.
How bad is it?
Tennis elbow isn't graded 1–2–3 the way a muscle tear is. It's a tendinopathy — an overload and gradual wear of the tendons on the outside of the elbow that straighten the wrist — rather than a clean-cut tear. It's usually described by how long it has been going on: early or irritable (recently sore, sharp with gripping), persistent (grumbling for a few months, weaker grip), and long-standing (there for many months and slow to shift). It's often self-limiting but slow, commonly quoted as settling over months to around 1–2 years — and, despite the name, most cases have nothing to do with tennis.
How long will it take?
Recovery moves in phases. This is the typical shape of it — yours may run faster or slower, and the numbers below are general ranges, not a forecast for your specific injury.
When to get it looked at
Most cases settle with time and sensible loading. Get it assessed by a professional if any of these apply — they can point to something that needs hands-on care:
- The elbow locks, catches or gives way, rather than just being painful
- Significant swelling, bruising or obvious deformity around the joint
- Pins and needles, numbness or weakness spreading into the hand or fingers (this points towards nerve involvement, not tennis elbow)
- Pain that started after a distinct injury — a fall, blow or sudden wrench — rather than coming on gradually
- No improvement at all after a couple of weeks of self-care, or it's steadily getting worse over months
- Redness, warmth or fever alongside the elbow pain
This is a list of warning signs, not a diagnosis. If you are worried, or the pain is severe, see a GP, physiotherapist or urgent care.
What to track while you recover
Tennis elbow is slow, and grip pain swings from day to day depending on what you did, so it's hard to tell whether you're genuinely improving. A simple daily record turns that guesswork into a trend you can see — and it's the pattern a physio will ask about first.
- Grip pain: how bad the outer elbow is when you grip or lift, 0–10 (the single most telling number for this injury)
- Which tasks set it off — a specific tool, lifting the kettle, a mouse, a handshake — and how much
- Whether a strap or brace helped, and for which activities
- Whether you did your forearm strengthening or stretches that day
- Anything that clearly flared it — a DIY job, a long day on the tools, a heavy carry
This is exactly what InjuryLog does.
Log each of these in seconds, watch the trend build day by day, and keep every scan and receipt tied to this one injury. Free to start.
What to tell your physio
The first physio appointment goes faster when you can answer their opening questions from a record instead of memory. Bring the pattern, not just today's pain.
- How long it's been going on, and whether it's improving, static or getting worse
- Exactly which movements reproduce the pain (gripping, lifting, twisting the wrist, straightening the arm)
- Whether any pins and needles, numbness or weakness reaches into the hand
- Any change in work, DIY, sport or repetitive tasks that lined up with it starting
- What you've already tried — rest, a brace, exercises — and whether it helped
Walk in with the whole picture.
InjuryLog turns your daily logs into a clean Physio Visit Pack, a one-page summary your physio can actually read, so the first appointment starts with facts, not guesswork.
The questions people actually ask
How long does tennis elbow last?
There's no fixed number, but it's usually months rather than weeks, and it can sometimes last over a year (NHS). Most people recover with simple treatment such as rest, load management and progressive forearm strengthening, and around 80–95% do well without surgery (AAOS). It tends to drag on longer the longer it's left unmanaged, which is why starting sensible loading and strengthening early matters.
Will tennis elbow go away on its own?
It often does eventually — it's usually self-limiting — but 'on its own' tends to mean slowly, with more flare-ups along the way. The evidence points to a mix of easing off what aggravates it and then progressively strengthening the forearm tendons as what gets most people better, rather than leaving it purely to time. If it's not budging after a couple of weeks of self-care, it's worth seeing a GP or physio.
Why is my tennis elbow not healing?
Tendons are slow to recover, so months without dramatic change can still be normal. The most common reason it stalls is that the tendon keeps being overloaded by the same gripping or lifting tasks, or that rest alone was tried without the strengthening that actually rebuilds the tissue's tolerance. If it's been many months with no progress, a clinician can check the plan and rule out other causes.
Can you get tennis elbow from lifting weights or typing?
Yes. Despite the name, most tennis elbow has nothing to do with tennis — it comes from repeated gripping and wrist activity. The NHS lists computer work like typing and using a mouse, and manual tasks, among the common triggers, and heavy or repetitive lifting can load the same tendons. It's the repeated demand on the wrist extensors, not one specific activity, that sets it off.
Should I wear a tennis elbow brace, and when?
A strap or brace can help by taking some of the pull off the tendon, particularly during the gripping and lifting tasks that aggravate it. It's a support to reduce the load during activity, not a cure on its own, and it works best alongside load management and strengthening. There's no strong reason to wear one all day or overnight if it isn't helping, and a physio can advise on whether it's worth using for your situation.
Why is my tennis elbow worse at night?
Night or rest pain can happen with tennis elbow, and it's often more noticeable once the distractions of the day are gone and the arm has been in one position for a while. How you rest the arm and the pillow or mattress can play a part. If the pain is severe at night, comes with numbness or tingling into the hand, or is clearly getting worse, that's worth mentioning to a GP or physio rather than pushing through.
Why is my tennis elbow getting worse?
The most common reason is continued overload — going back to the same gripping, lifting or repetitive tasks before the tendon has settled. Doing too much too soon with strengthening can also flare it. Steady worsening over weeks, especially with any spreading numbness, tingling or weakness into the hand, is a reason to get it checked rather than keep loading it.
Does tennis elbow cause swelling?
Some tenderness and mild swelling around the outside of the elbow can occur, and the NHS lists it among the possible symptoms. Significant swelling, bruising or a joint that locks or gives way isn't typical of tennis elbow, though, and points towards something else that a clinician should look at. If in doubt about marked swelling after an injury, get it assessed.
How do you know if you need surgery for tennis elbow?
Surgery is uncommon — the large majority recover without it. It's generally only considered when symptoms haven't improved after around 6 to 12 months of consistent non-surgical treatment, including exercises and load management (NHS, AAOS). That decision is made with a clinician who can weigh up how much it's limiting you and what's already been tried, not something to judge from pain level alone.
Sources
- Tennis elbow — NHS
- Tennis Elbow (Lateral Epicondylitis) — AAOS OrthoInfo