[Rapzid]

1. Meniscus tears can be incredibly random. The 2-3 I have experience with involved no extra load over body-weight. 275lb is a nothing burger in the scheme of things.

2. Are you seriously dismissing the incredible body of science that supports progressive overload?! Are you conflating strength gains with "performing better at some sport"?!

3. Starting Strength includes deadlift which works the entire back including upper. It also includes presses which work shoulders, triceps, traps, and a host of core muscles. Then there are bench presses which work the pecs, triceps, and shoulders as well.