Started doing sets like that after I tore my right (have torn both) tricep tendon. Had to heal it up for 3 months and used that method to rehab the elbow. Works amazing for curls. Loved it and use it for most muscle groups. Even cuts down the amount of time I lift.
I started using the smith machine for flat bench years ago, I use 225 and slow it down, makes it feel like 300. Amazing how those injuries are humbling. I see younger people slinging and swinging weight just to move more than they should be and makes me cringe.
Amen! Same too when watching them do unassisted pull ups. Little ole' middle age female me getting up there counting into the 20s hard time--proper form, and then the twenty year old boys jumping up and swinging their body back and forth and up and down using mostly momentum into the 20s count (playtime ;D).
In that case I just rolled my eyes knowing the benefits they were NOT getting. But it fed their ego and looked good to others in the amount and speed.
But as you said when the swinging and slinging of the weights happen with younger people, I feel blessed to have learned the hard lessons (injuries) as well as took seriously all the advice about proper form and controlled lifting when I was younger.
So great to read other dedicated resistant training Freepers' posts.
Best of luck and blessings for a successful surgery and speedy recovery.
And happy lifting!!