What is chondromalacia patella?

Chondromalacia patella describes irritation and softening of the cartilage under the kneecap (patella). It often causes anterior knee pain, especially with stairs, squats, hills, running, or prolonged sitting.

The kneecap should glide smoothly in the femoral groove. However, when tracking shifts or pressure rises, the joint can become sensitive. When knee pain occurs without clear cartilage changes, clinicians often describe it as patellofemoral pain syndrome (PFPS). You may also see it described as runner’s knee.

Many people improve with education, targeted exercise, and sensible load changes. Current best-practice care prioritises exercise therapy and advice first, then uses add-ons (like taping or orthoses) when they suit your presentation.

Common symptoms

• Pain behind or around the kneecap, often worse on stairs or slopes
• Pain with squats, lunges, jumping, or running
• A “grinding” or “crunching” feeling during knee bending
• Stiffness after sitting with the knee bent (cinema sign)
• Occasional swelling or a feeling of giving way

What increases risk?

Chondromalacia patella and PFPS show up in sports with repeated knee bending and load, such as running, football, cycling, rowing, tennis, netball, ballet, skiing, and gym training. Symptoms can also flare with everyday tasks like stairs and kneeling.

Contributing factors your physiotherapist may check

Chondromalacia patella rarely comes from one factor. Instead, it often relates to how load moves through the hip, knee, and foot. Your physiotherapist may assess:

• patella maltracking or changes in kneecap alignment
• hip strength and control (especially hip abductors and external rotators)
• quadriceps capacity and tolerance to load
• training errors (sudden spikes in running, hills, stairs, or squats)
• foot posture and pronation control, where relevant
• tightness or overload around the lateral thigh (eg ITB syndrome)

Diagnosis and when imaging helps

A physiotherapist can usually diagnose this problem through a clinical assessment, including symptom history, movement testing, and load tolerance checks. Imaging like MRI may help when symptoms persist, swelling is significant, locking occurs, or another injury is suspected.

People Also Ask: Can chondromalacia patella heal without surgery?

Often, yes. Many cases settle with a structured rehab plan that builds hip and knee capacity, improves movement control, and gradually restores tolerated loading. Surgery is usually reserved for specific situations and only after conservative care has been trialled.

Treatment that physiotherapists commonly use

Most plans start by reducing aggravating loads, then building strength and confidence so the kneecap joint tolerates sport and daily tasks again. Exercise therapy and education sit at the centre of care.

Phase-based rehab approach

Phase 1: Calm symptoms and protect the joint

Settle pain by modifying training, reducing stairs or hills temporarily, and using ice if it helps. Some people also benefit from supportive taping or a brace for short-term comfort while they rebuild capacity.

Phase 2: Restore comfortable knee movement

Improve range and control with graded mobility drills and low-irritability strengthening.

Phase 3: Build hip and knee strength

Strength work commonly targets hip abductors and external rotators plus quadriceps, then progresses to step-downs, split squats, and controlled single-leg loading. Hip-focused or combined hip-and-knee programs may improve pain and function.

Phase 4: Improve movement patterns

Refine squat, stair, running, and landing mechanics so the knee tracks well under load. Your physiotherapist may also use video feedback.

Phase 5: Return to sport and higher loads

Progress to plyometrics, agility, and sport-specific drills only when pain stays stable during and after training. Consistency matters more than fast jumps in intensity.

If you want a starting point, see our knee exercises guide and the runner’s knee overview. For taping options, read kinesiology tape and kinesiology tape vs rigid tape.

External authority (non-commercial): MedlinePlus provides a plain-English overview of knee pain causes and self-care. Knee pain (MedlinePlus).

What to do next

If your kneecap pain lasts more than 2–3 weeks, keeps returning, or stops you from training, book an assessment. A physiotherapist can identify your triggers, tailor your loading plan, and guide progressions so you can keep moving with confidence.

Recommended supports

Some people find short-term support helpful during activity while they build strength and tolerance. Your physiotherapist may discuss options such as taping, foot orthoses, or a patellofemoral brace based on your assessment.

Related articles

1. Fat Pad Syndrome: Another common cause of front-of-knee pain.
2. Patella Enthesopathy: Pain around patellar tendon attachment points in sport.
3. Knee Bursitis: Swelling-related knee pain and irritation.
4. Patellar Tendinopathy: Jumper’s knee and tendon loading rehab.
5. Patellofemoral Pain Syndrome (PFPS): A broader guide to kneecap pain.

References (recent)

1. Neal BS, Lack SD, Bartholomew C, Morrissey D. Best practice guide for patellofemoral pain based on synthesis of a systematic review, the patient voice and expert clinical reasoning. Br J Sports Med. 2024.
2. Wallis JA, Roddy L, Bottrell J, Parslow S, Taylor NF. A systematic review of clinical practice guidelines for physical therapist management of patellofemoral pain. Phys Ther. 2021;101(3):pzab021.
3. Manojlović D, Kozinc Ž, Šarabon N. Trunk, hip and knee exercise programs for pain relief, functional performance and muscle strength in patellofemoral pain: systematic review and meta-analysis. J Pain Res. 2021;14:1431-1449.
4. Morri M, et al. Conservative treatment of patellofemoral pain: effectiveness of strength exercises compared to other treatments. A systematic review with meta-analysis. 2025.