Range of motion refers to a joint’s ability to move freely and without restriction along its functional axes. It can be limited by previous injuries, muscle imbalances, or simply a lack of activity. Joint stability, on the other hand, is the ability to maintain position despite dynamic changes in external force. A joint can be mobile yet unstable, or stable yet immobile—imagine a doorknob that turns well but isn't firmly attached.
These two qualities involve several structures: ligaments (primarily responsible for stability), fascia, joint capsules, muscles, and tendons. Mobility and stability issues are a common source of discomfort and injury—for both beginners and experienced athletes.
Every Joint Has a Role
For optimal performance, some joints require more stability, others more mobility. When a joint can’t fulfill its role, the body compensates to complete the movement. But this often shifts stress to the joint above or below—leading, sooner or later, to dysfunction or injury.
Take squats, for example. Someone with limited ankle mobility due to a past injury or inactivity will still manage to squat—but not without overloading and destabilizing the knee, possibly accelerating wear and tear. Similarly, hip mobility issues can put undue strain on the lower back, while a stiff thoracic spine may affect the neck and shoulders. Now imagine adding heavy weights or endurance sports on top of this...
It’s All About the Foundation
Ask any qualified fitness professional, and they’ll tell you the same: assessing movement quality and joint stability (the foundation) is crucial before adding weight or complexity. When the joints work properly, your body distributes loads efficiently—limiting compensations and reducing injury risks.
Your Posture Speaks Volumes
Posture often reveals joint dysfunction—especially if it has changed over the years. Try these self-tests at home:
- Check your side profile in a mirror or a photo: Does your neck or shoulder appear to lean forward? Do you often feel tension in your neck or traps?
- Try a forward roll-down from a standing position: Can you roll smoothly from the top of your spine to the bottom—or do you hinge at the hips like a folding chair? Is it uncomfortable?
- Balance on one foot: Does your knee wobble significantly?
- Can you move your hips like a “hula hoop”? Or do they feel locked in place?
If these movements are limited or feel awkward, your mobility and stability may need some work.
#move_before_it_rusts
Visit multisports.ca to discover simple and effective at-home exercises to improve your movement and joint stability.