my anatomy prof was always pedantic about the patellar tendon: you had to identify it as patellar ligament for full credit. since the patella is a bone, and the tibia is a bone...and it is drawn from for ACL repair...and the latin name is ligamentum patellae....
patellar tendon...patellar ligament...I'd love to know how the duplicate terminology started.
but, it does bring up the question about the nature of Jok's injury. all the press releases say "tear of patellar tendon." Well...is this a partial tear of the bone-to-bone tissue below the patella, or the connecting tendon to the quadricep above it?
if the latter, I've competed against and trained cyclists and speed skaters (before coming to the south) that had overuse injuries of the quadricep tendon that were repaired with debridement and suturing of the tendon, and all were able to come back to pre-injury levels. complete rupture though, yeah, you're screwed.
I'm not a medical professional btw -- I've seen this stuff from the coaching side from training endurance guys in cycling, running, and skating.