Looking side to side is an example of which type of joint motion?

Looking side to side is an example of which type of joint motion?

• A. Osteokinematic
• B. Accessory
• C. Active
• D. Passive

Answer: (B)

Looking side to side primarily describes the rotation of the head and neck bones in space. This is an osteokinematic motion—the observable movement of bones at a joint in a given plane. While there are small joint-surface movements (accessory movements) that help the motion occur smoothly, the main motion you’re describing is the gross bone movement itself. The fact that you can perform it actively with muscles (or have it assisted passively) doesn’t change the type of motion being osteokinematic.

Looking side to side primarily describes the rotation of the head and neck bones in space. This is an osteokinematic motion—the observable movement of bones at a joint in a given plane. While there are small joint-surface movements (accessory movements) that help the motion occur smoothly, the main motion you’re describing is the gross bone movement itself. The fact that you can perform it actively with muscles (or have it assisted passively) doesn’t change the type of motion being osteokinematic.