In doing a hypertrophy specific routine where all of the exercises remain the same three times per week (eight week cycle and descending rep ranges; 15, 10, 5 and -5) with increasing loads, will I increase my chances of developing wear patterns in my joints?
I'm going to assume that by "wear patterns," you're asking if a situation of "overuse" can be created. The answer is: possibly. Training with the goal of hypertrophy only, with the intensity of load you've described, usually implies the use of isolated uni-planer training methods (i.e., machine and traditional free weight exercises). This type of training when done with "chronic" regularity over prolonged periods of time can create muscular imbalances that lead to synergistic dominance and altered arthrokinematics (joint function), finally resulting in an "overuse" type situation and possible injury.
- The body's nervous system was designed to chose the best muscle "synergies" or combinations when it functions, not single muscles or isolation.
- When strength training, regardless if the goal is aesthetic or performance related, the principle of variation in a training regimen has been shown to greatly enhance the overall training effect and, more importantly, reduce the likelihood of injury.
- Integrate your training approach to include the full contraction spectrum in a multi-planar environment to prevent the overuse discussed above. Begin to include the additions of core stability, neuromuscular stability (balance), reactive neuromuscular training (power) as well as integrated flexibility elements into your weekly routines.
- Taking an integrated approach will teach/re-teach your body as a kinetic chain to function with as much neuromuscular efficiency as possible, which basically means you'll be teaching your brain to communicate optimally with your body. When this occurs, the body's stabilizer and prime mover muscles are given the best opportunity to work in harmony or synergy with each other. This synergy allows for greater loads to be "lifted" safely with minimal compensation throughout the "chain."
To learn the specifics on integrated training methods with scientific rationale, I recommend reading the "Essentials of Integrated Training" series (read Part 1 here) by Mike Clark.