Knee Pain was found in 5-Minute Clinical Consult which helps you diagnose, treat, and follow up on over 900 medical conditions seen in everyday practice.
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Knee pain is a common complaint in the outpatient setting with a broad differential.
- Knee pain may be acute, chronic, or an acute exacerbation of a chronic condition.
- Trauma, overuse, and degenerative conditions are frequent causes.
- Obtaining a detailed history, including patient age, pain onset and location, mechanism of injury, and associated symptoms, can help narrow the differential diagnosis.
- A thorough but focused exam, including examination of the hips, is key to making a correct diagnosis and determining appropriate treatment.
- Knee pain accounts for 1.9 million primary care visits annually.
- The incidence of knee osteoarthritis is 240 cases/100,000 person-years (1).
- The knee is the most common site of lower extremity injury among runners (2):
- Patellofemoral syndrome is one of the most common diagnoses.
- Osteoarthritis (OA) is one of the leading causes of disability in the US.
- Poor flexibility, muscle imbalance or weakness
- Rapid increases in training frequency and intensity
- Improper footwear, training surfaces, technique
- Activities involving cutting, jumping, deceleration, kneeling
- Previous injuries
- Maintain normal body mass index; lose weight if obese.
- Use appropriate exercise training principles.
- Correct strength and flexibility imbalances.
- Proper activity-specific techniques, equipment (i.e., jumping and landing, knee pads)
- Trauma (ligament or meniscal injury, fracture, dislocation)
- Overuse (tendinopathy, patellofemoral syndrome, bursitis, apophysitis)
- Age related (arthritis, degenerative conditions, apophysitis [young])
- Rheumatologic (rheumatoid arthritis [RA], gout, pseudogout)
- Infectious (bacterial, postviral, Lyme disease)
- Referred pain (hip, back)
- Other (tumor, cyst)
Commonly Associated Conditions
- Fracture, contusion
- Effusion, hemarthrosis
- Patellar dislocation/subluxation
- Meniscal injury
- Ligamentous injury
- Osteochondral injury
- Septic joint
- Muscle strain