The tibial tubercle is the insertion site of the patellar tendon, an apophysis just distal to the proximal tibial epiphysis during growth. Eccentric contraction of the quadriceps, as seen during the landing from a jump, can avulse the tibial tubercle.
The clinical presentation of tibial tubercle fractures includes pain, ecchymosis, and deformity over the fracture site. Patients will often be unable to perform a straight leg raise. Fractures that extend into the knee joint will be associated with a hemarthrosis. The differential diagnosis includes proximal tibial shaft fractures, tibial spine fractures, and patellar sleeve fractures. Red flags are any signs or symptoms of lower extremity compartment syndrome.
Full Article - https://www.orthopaedia.com/pediatric-fractures-of-the-lower-extremities/#Tibial-Tubercle
