Most knee pain in athletes comes from overload – too much running, jumping or squatting too soon – rather than a single injury. Where it hurts is the best clue to the cause, and for most overuse conditions, a structured strengthening programme works better than rest or injections.
This guide from the knee team at Sports Orthopedics Institute, Bengaluru explains the common causes of knee pain in runners, cricketers, footballers, badminton players and gym-goers, how to tell them apart, and what treatment the evidence supports.
Key takeaways
- Location matters: front, outer side, inner side, below the kneecap or behind the knee each point to different problems.
- Front-of-knee pain (patellofemoral pain) is the most common sports knee complaint, accounting for 25–40% of knee problems seen in sports injury clinics.
- Exercise is the main treatment for most overuse knee pain – especially combined hip and knee strengthening.
- Steroid injections give short-term relief only for tendon problems and can leave you worse later.
- Sudden injuries with swelling, locking or giving way need prompt assessment.
See a doctor promptly if you have
- A pop followed by rapid swelling within hours
- A knee that locks, catches or gives way
- Inability to bear weight
- A hot, red, swollen knee or fever
- Pain at night or at rest that is getting worse
Knee Pain by Location
|
Where it hurts |
Likely causes |
Typical triggers |
|---|---|---|
|
Front, around or behind the kneecap |
Patellofemoral pain (runner's knee), cartilage wear under the kneecap |
Squats, stairs, sitting for long periods, running downhill |
|
Just below the kneecap |
Patellar tendinopathy (jumper's knee); in teenagers, Osgood-Schlatter or Sinding-Larsen-Johansson |
Jumping, landing, sprinting |
|
Just above the kneecap |
Quadriceps tendinopathy |
Jumping, kicking, deep squats |
|
Outer side |
Iliotibial band (ITB) syndrome; lateral meniscus tear |
Running, especially downhill; cycling |
|
Inner side |
MCL sprain, medial meniscus tear, pes anserine bursitis |
Twisting, side-on tackles, squatting |
|
Behind the knee |
Baker's cyst, hamstring tendon pain, meniscus tear |
Deep bending, sprinting |
|
Whole knee with swelling after an injury |
ACL tear, meniscus tear, kneecap dislocation, fracture |
Twisting, landing, direct blow |
Common Overuse Conditions
Patellofemoral pain (runner's knee)
A dull ache around or behind the kneecap, worse with squatting, stairs and sitting with the knees bent. It accounts for 25–40% of knee problems seen in sports injury clinics.
What works: the international consensus recommends exercise therapy, and specifically combined hip and knee strengthening in preference to knee exercises alone, for short-, medium- and long-term improvement. Foot orthoses and taping can help in the short term. Knee manipulation and electrotherapy are not recommended (Br J Sports Med, 2016; Br J Sports Med, 2018).
Patellar tendinopathy (jumper's knee)
Pain just below the kneecap, common in volleyball, basketball, cricket fast bowlers and badminton players. Pain is sharp with jumping and landing and often warms up during play.
What works: progressive tendon loading. In a randomised trial, heavy slow resistance training and eccentric decline squats gave lasting improvement, while steroid injections helped in the short term but symptoms worsened by six months (Scand J Med Sci Sports, 2009). Patients were most satisfied with heavy slow resistance.
Iliotibial band (ITB) syndrome
Sharp pain on the outer side of the knee, typically coming on at the same point in a run, especially downhill. Common in runners and cyclists.
What helps: temporarily reducing running distance and downhill running, hip-strengthening exercises, and gradually rebuilding mileage. Foam rolling may ease symptoms but doesn't stretch the band itself.
Quadriceps tendinopathy
Pain just above the kneecap, less common than patellar tendinopathy. Treated in the same way – progressive loading and modifying jumping and deep squats.
Knee Pain in Growing Athletes
Teenagers who play a lot of sport during growth spurts can develop pain where tendons attach to growing bone:
- Osgood-Schlatter disease: pain and a tender bump just below the kneecap, on the top of the shin bone
- Sinding-Larsen-Johansson syndrome: pain at the lower tip of the kneecap
Both settle as growth finishes. Treatment is load management – reducing jumping and sprinting to a level that keeps pain manageable – plus quadriceps and hip strengthening. Complete rest is rarely needed.
Acute Knee Injuries
A sudden injury with swelling, locking or giving way needs prompt assessment.
- ACL tear: a pop when twisting or landing, rapid swelling, and the knee feels unstable – see our guide to ACL tears
- MCL sprain: pain on the inner side after a twist or side-on blow
- Meniscus tear: pain on the joint line, catching or locking, swelling the next day
- Kneecap dislocation: the kneecap slips out to the side, often in teenagers
- Fracture: after a significant fall or direct blow
Diagnosis
Most knee pain in athletes is diagnosed from your history and an examination. Your doctor will ask how the pain started, where it is and what triggers it, and check alignment, swelling, movement, ligament stability and muscle strength.
- X-rays are needed after a significant injury (the Ottawa knee rules help decide who needs one) or for suspected arthritis or bone problems – not routinely for overuse pain
- Ultrasound shows tendon problems such as patellar tendinopathy
- MRI is used for suspected ligament, meniscus or cartilage injuries, or when pain isn't improving with treatment
- Movement assessment – for example a single-leg squat or running analysis – helps identify contributing factors such as weak hips
Treatment Approach
For overuse knee pain, the aim is to reduce the load enough to settle symptoms while building the knee's capacity back up – not to stop moving altogether.
|
Step |
What it involves |
|---|---|
|
1. Adjust your load |
Reduce the activities that flare your pain (for example hills, deep squats, jumping) while staying active with lower-impact exercise such as cycling or swimming |
|
2. Strengthen |
Hip and thigh strengthening for patellofemoral pain; progressive heavy slow loading for tendon problems |
|
3. Short-term pain relief |
Ice, painkillers, taping or a brace to help you exercise comfortably |
|
4. Correct contributing factors |
Running technique, training plan, footwear, foot orthoses where helpful |
|
5. Return to sport gradually |
Build up running, jumping and sport-specific drills over weeks |
Injections and surgery
- Steroid injections are generally avoided for tendon problems: they help briefly, but results can be worse by six months
- Surgery is needed for some acute injuries, such as an ACL tear in a pivoting athlete or a displaced meniscus tear, and rarely for overuse conditions that fail months of good rehabilitation
Prevention
- Increase training gradually – avoid sudden jumps in distance, intensity or jumping volume, especially at the start of a season
- Strengthen hips, thighs and calves two or three times a week, year-round
- Warm up with dynamic movements before training and matches
- Learn good landing and cutting technique – knees in line with toes, soft landings
- Use injury-prevention programmes such as FIFA 11+ for football and similar team sports
- Wear sport-appropriate footwear and replace worn shoes
- Maintain a healthy body weight
- Act early – knee pain addressed in the first few weeks settles much faster
How Sports Orthopedics Institute Can Help
Our sports knee team in HSR Layout, Bengaluru offers detailed assessment, ultrasound and MRI, structured rehabilitation with our physiotherapists, and keyhole surgery when it's needed – helping athletes of all levels return to sport safely.
Book at sportsorthopedics.in or call +91 6364538660 / +91 9008520831.
Frequently Asked Questions
What is the most common cause of knee pain in athletes?
Patellofemoral pain – an ache around or behind the kneecap – is the most common, accounting for 25–40% of knee problems seen in sports injury clinics.
Should I rest my knee completely?
Usually not. Reduce the activities that flare it, but keep moving with low-impact exercise and start a strengthening programme. Complete rest weakens the muscles that support the knee.
Can I keep running with knee pain?
Often, at a reduced level, if pain stays mild during and after running and doesn't get worse the next day. Avoid downhill running and sudden increases in distance.
Are steroid injections a good option?
For tendon pain, they give short-term relief, but a randomised trial found symptoms worsened by six months, while strength training gave lasting results.
Do I need an MRI?
Not for most overuse knee pain. An MRI is useful after an injury with swelling, locking or instability, or when pain isn't improving with treatment.
When should a teenager with knee pain see a doctor?
If pain stops them playing, there's a tender bump below the kneecap, or there's swelling, locking or night pain.
How long does it take to recover?
Most overuse knee pain improves within 6–12 weeks of consistent strengthening and load management, though tendon problems can take 3–6 months.
References
- Crossley KM, et al. 2016 Patellofemoral pain consensus statement from the 4th International Patellofemoral Pain Research Retreat, Part 2: recommended physical interventions. Br J Sports Med, 2016;50:844–852.
- Collins NJ, et al. 2018 Consensus statement on exercise therapy and physical interventions to treat patellofemoral pain. Br J Sports Med, 2018;52:1170–1178.
- Kongsgaard M, et al. Corticosteroid injections, eccentric decline squat training and heavy slow resistance training in patellar tendinopathy. Scand J Med Sci Sports, 2009;19(6):790–802.
Disclaimer: This article is for general information and does not replace advice from a qualified healthcare professional.