What are the potential benefits of using shorter crank lengths for cyclists experiencing knee tracking issues, and how do different crank lengths impact the biomechanics of the pedal stroke, particularly in relation to patellar tracking and lateral knee movement?
Specifically, can shorter cranks help to reduce the stress and pressure on the knee joint by altering the angle of the pedal stroke and the position of the knee at the top and bottom of the stroke, and if so, what crank length is generally considered optimal for mitigating knee tracking issues?
Additionally, are there any potential drawbacks or compromises associated with using shorter cranks, such as reduced leverage or decreased efficiency, and how do these factors impact the overall performance and comfort of the cyclist?
How do different crank lengths affect the riders ability to maintain proper knee alignment and tracking, particularly for cyclists with pre-existing knee issues or injuries, and are there any specific crank length recommendations for cyclists with specific knee problems, such as patellofemoral pain syndrome or iliotibial band friction syndrome?