Jumper’s Knee in Basketball: Causes, Treatment & Prevention
If you play basketball long enough, there’s a good chance you’ll experience pain around the patellar tendon at some point.
Jumper’s knee, more accurately called patellar tendinopathy, is pain and dysfunction of the patellar tendon, usually near where it attaches to the bottom of the kneecap.
And it’s extremely common in basketball. A 2023 systematic review involving more than 28,000 people found patellar tendinopathy in approximately 20.8% of basketball players.
Jumper’s knee usually develops when the load placed on the tendon repeatedly exceeds the tendon’s ability to recover and adapt.
Is Jumper’s Knee the Same as Patellar Tendonitis?
People commonly call it patellar tendonitis, but chronic jumper’s knee usually isn't primarily an inflammatory problem.
Patellar tendinopathy is the better term. Repeated excessive loading can produce changes within the tendon that decrease its ability to tolerate jumping, landing and other explosive movements.
Typical symptoms include:
Pain just below the kneecap
Pain with jumping or landing
Pain during squats or stairs
Stiffness when beginning activity
Pain that improves after warming up but returns later
Not all pain in the front of the knee is jumper’s knee, though. PFPS, Osgood-Schlatter disease, quadriceps tendinopathy and other conditions require different approaches.
Further Knee Pain Reading: Basketball Knee Pain: Common Causes & How to Prevent It
Why Do Basketball Players Develop Jumper’s Knee?
1. Too Much Jumping for the Tendon’s Current Capacity
Jumping isn't bad for your tendons. In fact, loading is how tendons become stronger.
The problem is too much load too quickly or too much load compared to what your tendon can take.
A sudden increase in practices, games, plyometrics, vertical-jump training or AAU tournament volume can exceed what the tendon is currently prepared to handle.
Research supports greater overall activity volume as an associated risk factor for patellar tendinopathy.
2. Poor Landing and Deceleration
Your quadriceps and patellar tendon work hard eccentrically—meaning while lengthening—to control the knee when you land or rapidly stop.
Poor force absorption can repeatedly overload the tendon.
The #1 Injury-Causing Movement in Basketball: Landing Mechanics for Basketball Injury Prevention
3. Lack of Strength
If your quads, calves, hamstrings and hips don't have enough capacity for the forces basketball produces, those forces still have to go somewhere.
Strength isn't just about jumping higher. Strength gives your body more capacity to tolerate basketball.
4. Problems Above or Below the Knee
The knee doesn't work alone.
A systematic review found conflicting evidence linking patellar tendinopathy with factors including reduced ankle dorsiflexion and reduced hip-extension strength, among others. So maybe these shouldn't be treated as proven causes, but in my experience; the function of the feet, ankle, hips, and pelvis matter a lot when it comes to patellar tendinopathy risk.
For example:
Stiff ankles can alter how you land.
Poor hip strength can change how forces are controlled.
Poor foot stability can affect the entire lower-extremity chain.
Treat the athlete, not just the painful tendon.
Read this for more details on “Why Basketball Players Get Injured”
Need Help Building a More Durable Basketball Body?
Our 2-Week Basketball Body Durability Program is designed to begin improving the mobility, strength and movement foundation basketball players need to better handle the demands of the game.
Short-Term Strategies for Jumper’s Knee Pain
The first goal is usually to calm the tendon down without completely deconditioning it.
Adjust Your Workload
You may temporarily need to reduce:
Max-effort jumping
High-volume plyometrics
Extra basketball sessions
Activities that significantly flare symptoms
Complete rest usually isn't the long-term solution. The tendon ultimately needs load to regain capacity.
Use Isometrics When Helpful
Exercises such as a Spanish squat hold, wall sits, or knee-extension isometric may provide short-term pain relief for some athletes.
Research supports isometrics as a reasonable option for short-term symptom management, although results vary between athletes.
The Long-Term Fix: Build Tendon Capacity
Pain relief isn't the same thing as fixing the problem.
Long-term rehabilitation should progressively expose the patellar tendon to greater loads.
That may progress from:
Isometrics → slow resistance training → heavier strength work → jumping and energy-storage exercises → full basketball demands
Progressive tendon-loading programs have produced meaningful improvements in pain and function. In one randomized trial, progressive tendon loading produced greater improvement after 24 weeks than eccentric exercise alone.
The bigger goal is simple: Don't just decrease the load. Increase the tendon’s ability to handle the load.
How to Help Prevent Jumper’s Knee
You can't guarantee that jumper’s knee will never happen, but you can reduce risk by:
Gradually increasing jumping volume
Building quad, hip, hamstring and calf strength
Training landing and deceleration
Maintaining useful ankle and hip mobility
Avoiding sudden workload spikes
Recovering between high-load basketball sessions
Addressing early tendon pain before it becomes chronic
Final Thoughts
Jumper’s knee isn't simply a knee that needs rest.
It's often a capacity problem.
If basketball is repeatedly asking more from the patellar tendon than the tendon can handle, simply resting until the pain disappears doesn't prepare it for basketball again.
The long-term solution is to manage the workload, address contributing factors, and progressively build a tendon that can handle the game.
To continue improving your health and durability as a basketball player, here are 3 easy places to start:
Our Complete Basketball Injury Prevention Playbook for Parents and Players
Our free guide “5 Habits Every Basketball Player Needs to Stay on the Court” that includes videos and articles