Muscle Strains
Muscle strains around the knee involve overstretching or tearing of muscle fibers in muscles such as quadriceps, hamstrings, or gastrocnemius due to sudden or excessive load.

Symptoms
- Sudden sharp pain during activity
- Swelling or bruising
- Muscle weakness or stiffness
- Difficulty bearing weight or moving the knee
Causes & Risk Factors
- Sudden acceleration or deceleration
- Inadequate warm-up
- Muscle fatigue or imbalances
- Previous strain or poor flexibility
Diagnosis
- Clinical history and physical examination
- Grade classification (I to III) based on severity
- Ultrasound or MRI for deeper assessment
Effective Treatment Options
- RICE (Rest, Ice, Compression, Elevation)
- Progressive loading exercises
- Manual therapy and myofascial release
- Eccentric strengthening and stretching
Frequently Asked Questions
How long does a muscle strain take to heal?
Mild strains may heal in 1–2 weeks, while severe strains may take several weeks with rehabilitation.
Can I exercise with a muscle strain?
Light activity may be allowed after the acute phase, but strenuous movements should be avoided until recovery.