Chondromalacia Patella: The Real Reason Your Knee Hurts Under the Kneecap

What Is Chondromalacia Patella?

Chondromalacia patella — sometimes called "runner's knee" — is a condition in which the cartilage on the underside of the kneecap (patella) softens and breaks down, leading to pain, grinding, and irritation at the front of the knee. It is extremely common in runners, cyclists, and young active adults, but can affect anyone whose kneecap is not tracking properly in the groove of the femur.

The word "chondromalacia" comes from the Greek words for cartilage (chondros) and softening (malacia). When the cartilage under the kneecap degrades, the normally smooth gliding surface becomes rough and irregular, creating friction and inflammation with every knee bend.

Why Does the Kneecap Maltrack?

Proper patellar tracking depends on the balance of forces pulling on the kneecap from all sides. When any of these forces are out of balance, the patella is pulled to one side of its groove, creating abnormal cartilage pressure. Common contributors include:

• Weak VMO (vastus medialis oblique) — the inner quad muscle that pulls the kneecap medially; when weak, the patella drifts laterally
• Tight IT band and lateral retinaculum — pulls the kneecap outward
• Hip weakness — particularly weak glutes and hip abductors, which allow the thigh to rotate inward during weight-bearing
• Foot pronation (flat feet) — causes internal tibial rotation that disrupts patellar mechanics
• Femoral anteversion — an anatomical variant where the femur is rotated forward, altering the Q-angle

Symptoms

• Aching pain at the front of the knee, especially behind or around the kneecap
• Pain that worsens going up or down stairs, squatting, or kneeling
• Pain after sitting for extended periods with the knee bent (the "movie theater sign")
• Grinding, crunching, or popping sensation when bending or straightening the knee
• Swelling around the kneecap after activity

How We Treat Chondromalacia Patella

Chondromalacia patella responds very well to physical therapy when treatment targets the specific mechanical faults driving abnormal patellar tracking.

Physical Therapy with Dr. Crockatt

A systematic assessment identifies whether the primary driver is quad imbalance, hip weakness, IT band tightness, or foot mechanics. Treatment is tailored to address the identified cause rather than just symptomatic pain relief. VMO strengthening exercises, hip strengthening, and neuromuscular retraining are the cornerstones of rehabilitation.

Soft Tissue Work and Graston

The iliotibial band, lateral retinaculum, and quadriceps tendon commonly develop adhesions that worsen patellar maltracking. Graston technique releases these effectively.

Taping and Orthotics

McConnell taping and proper foot orthotics can significantly reduce pain during rehabilitation by improving patellar mechanics and reducing abnormal loading.