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Top Tips for Knee Pain

1.

Knee pain is a common symptom at all ages. Inflammatory pain is usually associated with swelling and stiffness. Mechanical pain classically worsens with activity and is marked at the end of the day.

2.

Remember that hip disease can present with knee pain, and should be suspected if the knee examination appears normal, in the context of limp, or if pain is ill-defined.

3.

Severe or refractory pain, especially with night pain or red flag symptoms, warrants urgent referral to orthopaedics. Radiographs should include the long bones above and below the knee to help exclude tumour or infection but further imaging may be required.

4.

Normal variants (knock knee and bow leg) do not usually cause knee pain; consider other causes.

5.

A single swollen painful knee is the most common presentation of Juvenile Idiopathic Arthritis (JIA) but there is a wide differential including trauma, infection, haemarthrosis or tumour.

6.

Enthesitis around the knee is a feature of inflammatory arthritis (enthesitis related arthritis) and tends to occur around the patella (‘3,6,9 o’clock’ positions).

7.

A sudden onset of knee pain with a ‘pop’ and rapidly developing effusion suggests internal injury such as anterior cruciate ligament rupture / meniscal tear and may associate with haemarthrosis.

8.

Anterior knee pain is a common cause of activity related pain, often associated with hamstring tightness and is more commonly observed in athletic and / or hypermobile teenagers. Chondromalacia patellae is common in adolescent girls who may have knock-knees or flat feet. Treatment focuses on muscle strengthening, stretches and may need to address foot posture and footwear.

9.

Osteochondritis dissecans is observed in adolescent boys, often with mechanical pain and may associate with locking or giving way. There is tenderness over the femoral condyle.

10.

Patella tendonitis, or ‘jumpers knee’, often occurs during a growth spurt and causes anterior knee pain, which is worse with activity. Osgood-Schlatter’s disease is more common in active adolescents (e.g. football, netball) with running and jumping. A period of rest or reduced activity will often resolve symptoms. Sinding-Larsen Johansson syndrome refers to pain and tenderness at the insertion of the patella tendon onto the inferior patella. Iliotibial band tendonitis is an overuse phenomenon seen in runners, cyclists and causes lateral knee pain, worse on going up stairs / downhill with tenderness over the lateral femoral epicondyle.


Please note: a pdf document of these Top Tips is also available here.

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