Orthotics for runners: what you need to know

Running is one of the most popular physical activities in Québec, with thousands of runners of all levels covering the streets and trails of Montréal every day. However, this sport places considerable strain on the feet. A custom running orthotic is a valuable tool for preventing injuries and optimizing performance.

Why runners have specific needs

With every stride, a runner’s foot absorbs a force equal to two to three times their body weight. Over one kilometre, that represents hundreds of impacts. This repeated load places intense demands on the structures of the foot, from the joints and tendons to the fascia and intrinsic muscles. A running orthotic must be designed to meet these specific dynamic demands, which are quite different from those of static, everyday use.

Injuries prevented by the orthotic

The most common injuries among runners are directly related to foot biomechanics. Plantar fasciitis, shin splints, iliotibial band syndrome, Achilles tendinitis and metatarsal stress fractures are among the most frequent conditions. A well-designed running orthotic corrects the biomechanical imbalances that predispose runners to these injuries. By controlling excessive pronation, cushioning impacts and optimizing pressure distribution, the orthotic significantly reduces the risk of injury.

Design specifics

A running orthotic differs from an everyday orthotic in several ways. It is thinner and lighter to fit into running shoes with limited interior volume. Materials are selected for their shock-absorbing capacity and resilience under repeated impact. The shell is often made of semi-rigid composite rather than rigid polypropylene, offering a balance between biomechanical control and dynamic flexibility. The top cover is made of a moisture-wicking technical material to manage heavy perspiration during exercise.

Assessing the runner

The biomechanical analysis of a runner goes beyond the standard examination. Your orthotist analyzes your running pattern in addition to your walking pattern. Foot strike, the support phase, propulsion and cadence are all carefully observed. Your training volume, the type of surface you run on, your goals and your injury history are taken into account. This in-depth assessment makes it possible to design a running orthotic perfectly suited to your practice.

Running orthotics and running shoes

Choosing a running shoe goes hand in hand with your running orthotic. Your orthotist will recommend shoe models whose interior volume, drop and structure are compatible with your orthotic. A neutral shoe is generally preferred, since the orthotic itself provides the necessary biomechanical correction. Shoes with built-in pronation control can create overcorrection when combined with a corrective orthotic.

At Marchildon, our orthotists support many runners, from beginners to marathoners. We understand the demands of your sport and design orthotics that let you run longer, more comfortably and with a reduced risk of injury.