A fusion of the subtalar joint most likely affects which joint(s) during gait?

The fusion of the subtalar joint has significant implications for gait mechanics, primarily because this joint plays a crucial role in the movement and adaptability of the foot during various activities, including walking and running.

When the subtalar joint is fused, it restricts the ability of the foot to pronate and supinate, which are essential motions that allow for proper shock absorption and adaptation to uneven surfaces. As a result, the influence on the hip and knee joints comes into play. The restricted motion at the subtalar joint can lead to compensatory mechanisms in the hip and knee, as these joints must accommodate for the lack of motion in the subtalar area to maintain balance and propel the body forward during gait.

Additionally, the hip joint is responsible for controlling leg movement, while the knee joint adjusts in response to changes in stance and movement patterns caused by the altered foot dynamics from the fused subtalar joint. This interconnectedness means that any change in the subtalar joint can significantly impact the kinematics of the hip and knee during walking.

Overall, understanding the relationship between the subtalar joint and the proximal joints is crucial in pedorthics, as it informs how to design appropriate footwear or interventions to accommodate for these changes and enhance the individual's gait.