Traction Apophysitis

Excessive pull by a large tendon causes damage to the unfused apophysis to which it is attached

Osgood-Schaltter's disease

  • Traction apophysities at tibial tubercle - insertion of patellar tendon into tibial tuberosity
  • Occurs in adolescent active boys

Clinical presentation

  • Knee pain, swelling
  • Leaves prominent bony lump

Other sites

  • Can also happen at patella and Achilles