Where it hurts
Front of knee pain
Pain in front of the knee, around the kneecap or above and below it, often comes from muscle imbalance, overuse, or directly from the kneecap joint itself.
The short answer
- Front knee pain is common and usually comes from muscle weakness or tightness altering how the kneecap tracks.
- Patellar tendinitis (tendon inflammation below the kneecap) is common in runners and jumpers.
- Quadriceps tendinitis (above the kneecap) comes from overuse or muscle weakness.
- Strengthening the quadriceps and hip muscles is the main treatment and usually works well.
- Most front knee pain settles within 4–8 weeks with rest, activity changes, and exercises.
What causes front-of-knee pain
The front of the knee can hurt from several sources: the kneecap joint itself, tendons above and below the kneecap, bursa (fluid sacs) in front of the knee, or from muscle imbalance pulling the kneecap out of its normal track.
Front knee pain is usually caused by overuse, muscle weakness, or muscle tightness rather than serious structural damage. Most cases respond well to rest, activity changes, and exercises.
Above the kneecap
Pain above the kneecap usually comes from the quadriceps tendon (which attaches the thigh muscle to the kneecap). Tendinitis or strain here is common from jumping, running, or kicking.
Rest, ice, and gentle strengthening of the quadriceps and hip muscles help. Most cases settle within 4–8 weeks.
Below the kneecap
Pain below the kneecap usually comes from the patellar tendon (which connects the kneecap to the shin bone). Patellar tendinitis is very common in runners and jumpers.
Rest from high-impact activities, ice, and targeted strengthening help. Avoid hill running and high-impact training while healing (usually 4–8 weeks).
Around the kneecap
Pain around the kneecap can come from the kneecap joint itself (patellofemoral pain) or from muscle imbalance pulling the kneecap off track.
Strengthening the quadriceps and hip muscles helps the kneecap track properly. Pain usually improves over 4–8 weeks with consistent exercises.
When walking
Front knee pain when walking often comes from muscle weakness or imbalance. Pain may be worse going downstairs (eccentric load) or walking downhill.
Walking itself can help mild pain. Rest and ice help moderate to severe pain. Most walking-triggered pain settles within 1–2 weeks with rest.
When running
Front knee pain when running is very common, especially if you have weak hip muscles or run on hard surfaces.
Rest from running while pain settles (usually 4–8 weeks). Strengthen your quadriceps and hip muscles. Return to running gradually—start with short, flat routes on soft surfaces.
When squatting
Front knee pain when squatting comes from the kneecap being forced into the knee joint during the movement—a load the muscles are not ready for.
Avoid deep squats while acute. Do partial squats or wall squats instead (shallow depth). As strength improves over weeks, gradually increase depth.
Patellofemoral pain
Patellofemoral pain (also called runner’s knee) is pain around or behind the kneecap from the kneecap joint being stressed. It usually comes from muscle weakness or tightness altering how the kneecap sits in its groove.
Strengthening the quadriceps (especially the VMO—teardrop muscle above the inner kneecap) and hip abductors is the main fix. Most people improve significantly within 4–6 weeks.
Patellar tendon problems
The patellar tendon (below the kneecap) connects the kneecap to the shin bone. Tendinitis here is very common in runners, jumpers, and basketball players.
Rest, ice, eccentric strengthening (a specific type that strengthens the tendon as it lengthens), and gradual return to activity help. Most cases settle within 4–8 weeks.
Quadriceps tendon problems
The quadriceps tendon (above the kneecap) connects the thigh muscle to the kneecap. Tendinitis here comes from overuse or muscle weakness.
Rest, ice, and targeted strengthening help. Eccentric exercises (lowering slowly against resistance) are particularly effective for tendon healing. Recovery usually takes 4–8 weeks.
Bursitis
The bursa in front of the kneecap (prepatellar bursa) can become inflamed from repeated kneeling or a direct blow. It causes swelling and tenderness in front of the knee.
Rest, ice, compression with a brace, and avoiding kneeling help. Most bursitis settles within 2–4 weeks with protection.
Arthritis
Arthritis behind the kneecap (patellofemoral arthritis) develops when the cartilage surfaces wear away. It causes pain, especially going downstairs or squatting.
Gentle movement, stretching, and strengthening help manage pain. Weight management also reduces load on the joint.
Treatment
Rest, ice, and activity modification are the foundation. Strengthening the quadriceps and hip muscles is the key fix—most front knee pain responds well to targeted exercises over 4–8 weeks.
Avoid high-impact activities while healing; return gradually as pain settles and strength improves.
When to seek help
See your GP if pain is severe, lasts more than 2 weeks, or if you cannot bear weight. Contact same-day if the knee is hot, red, very swollen, or if you feel unwell.
Your GP can assess you and refer for physiotherapy if pain is not improving.
When to get medical help urgently
Most front knee pain is not serious, but seek same-day help for these signs.
- Severe pain with sudden swelling
- The knee is hot, red, very swollen, and you feel unwell
- You cannot put weight on the leg or the knee buckles
- You heard a pop or felt a tearing sensation
- Pain is preventing you from walking or moving
Contact your GP, injury unit, or call 112/999 if any apply.
Common questions
Is front knee pain serious?
Most front knee pain is not serious—usually overuse, muscle weakness, or imbalance. It responds well to rest and strengthening exercises. Serious injuries causing severe pain or swelling need urgent assessment.
Why is going downstairs painful?
Downstairs puts a big eccentric load (lengthening) on the quadriceps as it lowers you. Weak quads struggle with this load. Strengthen your quads and you will find stairs much easier within weeks.
Will I need surgery for patellar tendinitis?
No, most respond to rest, ice, and strengthening. Surgery is very rarely needed and only after months of failed physiotherapy.
How do I strengthen my quadriceps?
Straight leg raises (lying down, straighten one leg and lift), sitting knee extensions (sitting, straighten leg), and wall squats (lean against a wall, squat partially) are excellent starting points. Do 10–15 reps, 3–5 times weekly. Progression is key.
Can I run with front knee pain?
If pain is mild, short runs on soft, flat surfaces may be okay. If pain is moderate to severe, rest from running for 4–8 weeks while you strengthen. Return gradually when pain is gone and strength has improved.
Sources
Strengthen your knees and ease front pain
Expert guidance on patellar pain and return to normal activity.
