Osgood Schaltter is a problem at the tibial tuberosity of the Shin bone.
It's sometimes associated with other co-factors like Pes Anserinus bursitis
, Overweight/Obese, Repetitive overuse of Shin on floor work etc.
If it's severe, it usually takes 3 months to heal
with proper Physiotherapy
and Rest along with Proteolytic enzymes supplements.
Feel free to contact me for further evaluation.
Hope it helps.