What is SLJ?

Sinding Larsen Johansson Syndrome (SLJ) is a juvenile osteochondrosis and traction epiphysitis affecting the extensor mechanism of the knee which disturbs the patella tendon attachment to the inferior pole of the patella.

More About Larsen Johansson Syndrome (SLJ)

The tenderness of the inferior pole of the patella is usually accompanied by roentgenographic evidence of splintering of that pole. Most patients with SLJ also show calcification at the inferior pole of the patella.

Sinding Larsen Johansson syndrome is an inflammation of the bone at the bottom of the patella (kneecap), where the tendon from the shin bone (tibia) attaches. It is an overuse knee injury rather than a traumatic injury. The syndrome usually appears in adolescence, during the growth spurt.