Patellar tendinitis is an injury to the tendon connecting your kneecap (patella) to your shinbone, is a relatively common cause of pain in the inferior patellar region in athletes. It is common with frequent jumping and studies have shown it may be associated with stiff ankle movement and ankle sprains.
Pain is the first symptom of patellar tendinitis, usually between your kneecap and where the tendon attaches to your shinbone (tibia). Anterior knee pain over the patella tendon, Pain made worse with jumping, landing or running activity and sometimes with prolonged sitting, Onset of pain is usually gradual and commonly related to an increase in sport activity, Localised tenderness over the patella tendon, Often the tendon feels very stiff first thing in the morning.
Patellar tendinopathy is an overuse injury that typically has a gradual onset of pain. Athletes with mild to moderate symptoms frequently continue to train and compete. Determining the prevalence of overuse injuries such as patellar tendinopathy is difficult because overuse injuries are often not recorded when injuries are defined exclusively by time-loss from competitions and training.