It does sound as if it's a tendon. I used to have one that "caught" as I reached a certain degree of bend. Gradually, as my knee healed and the swelling went down, the tendon stopped catching and I'm not aware of it at all now.
I'll do my best!Maybe @Josephine can provide an explanation?
Sitting heel slides,5-6 repetitions, 3-4 times a day- heel slides are an easy thing to do badly and these are badly! You should read this Heel slides and how to do them properly but more than that, leave them for a few weeks.
Long arc quad, 5-6 repetitions, 3-4 times a day- also known as straight leg raises. I'll give you a tip, once you can do them you don't need to do them any more!
Quad sets, 5-6 repetitions,3-4 times a day- I think once a day is plenty for this
Prolonged flexion stretch,4-5 repetitions, 3-4 times a day- here again, too many. I suggest 2-3 once a day
No PT at this time yet. That may change after Weds - well don't let them give you too much to start with and on no account allow anyone to push on your knee to get more flexion - very bad!
! Thursday I over did things way more than usual and even with taking it easy Friday, sleep eluded me the last two nights. Didn’t feel like doing much of anything today, but my 3 yr old granddaughter kept me from spending the entire day in the recliner feeling sorry for myself. She even talked me into going for a short walk which actually felt good. 


Be daring, hire someone to mow your lawn for a while! You’ll be contributing to someone who needs the money. It won’t be forever. And if they don’t do it perfectly, it’s just grass. It’ll recover.Need to get the yard mowed (again!). Wonder if that might be pushing my luck?

. I’ll find out tonight, but for now, I’m resting out back on the deck, feet up with a cold iced tea
! Ice will come in a bit when I go inside to watch some golf ️ !! At least I got it done with no pain, minor stiffness, but overall feels good.
is just the thing. Perhaps you will snooze while watcing golf.
I hope you can take a day off your feet tomorrow or at least until your guests come.
Anyway, my sleep pattern wasn’t great to begin with so who knows. Did your OS take post op X-rays at 6wks or so? I had my initial post op X-ray in the recovery room but I’m scheduled for another round at 6 wks post op. 