Considering the widely accepted notion that crank length plays a significant role in determining a riders comfort and efficiency, its surprising that there isnt more discussion around the benefits of shorter crank lengths, particularly 165mm, for injury prevention and joint relief. As more research emerges on the importance of optimizing crank length to individual rider characteristics, such as leg length and riding style, it seems clear that the traditional one-size-fits-all approach to crank length may be due for a re-examination.
Given the apparent advantages of shorter crank lengths, including reduced stress on the knees and hips, as well as improved pedaling mechanics, why do many bike manufacturers and fitters continue to recommend longer crank lengths, often 172.5mm or 175mm, for riders with average to below-average leg lengths? Is it possible that the industrys focus on preserving a narrow Q-factor and maintaining a specific pedal stroke has led to a neglect of the potential benefits of shorter crank lengths?
Furthermore, what role do you think crank length plays in the prevention of common cycling injuries, such as patellar tendonitis and iliotibial band syndrome? Do you believe that a more nuanced approach to crank length selection, taking into account individual rider characteristics and riding styles, could lead to a reduction in these types of injuries? Are there any studies or data that support the use of shorter crank lengths, such as 165mm, as a means of promoting joint health and preventing injury in cyclists?