Roll Ball Posterior Tibialis (Single Leg) Side Lying on Floor
- Target muscle
- —
- Equipment
- Rollball
- Body part
- Calves
- Type
- Stretching
The Roll Ball Posterior Tibialis (Single Leg) Side Lying on Floor is a myofascial release exercise that uses a small massage ball to apply targeted pressure to the posterior tibialis — the deep calf muscle that supports the arch of the foot and stabilizes the ankle. Performed side-lying, this single-leg technique allows precise control over ball placement along the inner lower leg and is commonly used to relieve arch pain, shin soreness, and ankle stiffness.
How to do the Roll Ball Posterior Tibialis (Single Leg) Side Lying on Floor
- 1Place a rollball on the floor and sit on your side, preparing to lower the inner surface of your lower leg onto the ball.
- 2Lie on your side with your bottom arm extended or bent for head support, keeping your body in a comfortable straight line.
- 3Position the rollball under the inner aspect of the lower leg of your bottom leg — roughly between the back of the shin bone (tibia) and the calf, where the posterior tibialis runs.
- 4Stack your top leg either directly on top of the bottom leg or rest it slightly in front on the floor for additional stability.
- 5Allow the weight of your lower leg to sink into the ball; do not press down forcefully with your hands or the top leg.
- 6Slowly roll the leg forward and backward along the inner lower leg, scanning from just above the ankle to below the knee to locate tender spots.
- 7When you find an area of increased sensitivity, pause and hold steady for 20–45 seconds, breathing slowly until you feel the tension begin to soften.
- 8Continue rolling to any additional tight areas, spending equal time on each.
- 9To finish, use your hands to lift the leg off the ball, set the ball aside, and rest for a moment before switching sides or standing up.
Form tips
- Keep your ankle relaxed and in a neutral position throughout — dorsiflexing or plantarflexing the foot can shift pressure away from the posterior tibialis and onto adjacent structures.
- Use your top hand on the floor in front of your chest to fine-tune how much bodyweight loads the ball; pressing down lightly increases intensity, lifting slightly reduces it.
- Move slowly — no more than a few centimetres per breath — so sustained pressure has time to engage the myofascial release response rather than simply gliding over the tissue.
- Target the tissue just posterior to the tibial border (the shin bone's inner edge); rolling directly on the bone is painful and counterproductive.
- A lacrosse ball provides firmer pressure; switch to a tennis ball if the posterior tibialis area feels overly sensitive or if you are new to self-myofascial release.
Common mistakes
- Rolling too quickly along the leg, which prevents the sustained pressure needed to release the posterior tibialis and reduces the effectiveness of the technique.
- Placing the ball on the calf belly (gastrocnemius) instead of the inner lower leg near the tibia, which misses the posterior tibialis entirely and works the wrong muscle.
- Tensing the leg or gripping the floor with the foot, which locks down the fascia you are trying to release and limits tissue response.
- Using the top leg to pile excessive bodyweight onto the ball, which can cause sharp pain or bruising rather than a productive therapeutic release.
- Holding your breath during holds, which increases systemic muscle tension and counteracts the relaxation response required for effective myofascial release.
Frequently asked questions
What does the posterior tibialis do and why does it get tight?
The posterior tibialis is a deep muscle that runs along the back of the shin and attaches to the underside of the foot. It plantarflexes and inverts the foot and is the primary dynamic support for the medial arch. It commonly becomes overloaded from prolonged standing, running, flat feet, or worn footwear, leading to arch pain, shin soreness, or medial ankle discomfort.
How is side-lying better than sitting upright for this exercise?
The side-lying position lets the weight of the leg apply natural, consistent pressure to the ball without requiring you to hold your body up with your arms. This frees the muscles of the lower leg to fully relax onto the ball, which makes the myofascial release more effective compared to awkward seated positions where the leg muscles stay partially engaged.
How often should I roll the posterior tibialis?
One to two sessions per day is appropriate for most people — for example, before exercise to warm the tissue and after exercise to aid recovery. Spend 2–4 minutes per leg per session. Back off to every other day if the area remains sore between sessions.
Can this exercise help with flat feet or plantar fasciitis?
Rolling the posterior tibialis can complement a flat-foot or plantar fasciitis management plan by reducing tightness in a muscle that directly loads the arch, but it is not a standalone treatment. Combine it with arch-strengthening exercises and consult a physiotherapist or podiatrist if you have a diagnosed condition.
What should I feel during this exercise — and what is a warning sign?
You should feel a firm, dull ache similar to deep-tissue pressure that gradually eases as you hold a spot — sometimes described as 'hurts so good.' Sharp, shooting, or electric pain, or numbness and tingling radiating into the foot, are warning signs to stop immediately, as these may indicate nerve or vascular irritation rather than normal myofascial release.
