Massage therapy · Kitchener–WaterlooEquinus Deformity

Equinus is a condition where the upward bending motion of the ankle joint is limited. Someone with this condition doesn't have the flexibility to bring the top of the foot towards the front of the leg. It can affect one or both feet. When it involves both feet, the limited movement is sometimes worse in one foot than the other (American College of Foot and Ankle Surgeons, n.d.).

People with equinus often find ways to compensate for the limited ankle movement, and this can lead to other foot, leg or back problems. The most common ways of compensating are flattening of the arch or lifting the heel too early when walking, which puts extra pressure on the ball of the foot. Some people compensate by toe walking, while a smaller number take steps by bending abnormally at the hip or knee (American College of Foot and Ankle Surgeons, n.d.).

Equinus Deformity Anatomy

How to Treat an Equinus Deformity

Treatments you may want to discuss with your family doctor or nurse practitioner

Tips

• The most common cause is tightness in the Achilles tendon or calf muscles (American College of Foot and Ankle Surgeons, n.d.).
• In some cases, the tightness is present at birth, while in others it is acquired (American College of Foot and Ankle Surgeons, n.d.).
• Some people acquire tightness from being in a cast, using crutches or regularly wearing high-heeled shoes (American College of Foot and Ankle Surgeons, n.d.).
• Diabetes can affect the fibres of the Achilles tendon, making it stiffer and reducing ankle movement (American College of Foot and Ankle Surgeons, n.d.; Searle, Spink and Chuter, 2018).
• Sometimes equinus is caused by a bone blocking the movement of the ankle, such as a fragment of bone after an ankle injury (American College of Foot and Ankle Surgeons, n.d.).
• Equinus may also result from one leg being shorter than the other (American College of Foot and Ankle Surgeons, n.d.).
• Less often, equinus is caused by spasms in the calf muscle, which may be a sign of an underlying nerve (neurological) condition. See your family doctor or nurse practitioner if you notice this (American College of Foot and Ankle Surgeons, n.d.).

With equinus your ankle can't bend upwards as far as it should, and your body works around it, which can strain your feet, legs and back. My aim is to ease calf and Achilles tightness where it can change and take strain off the areas that are compensating. Where the limit comes from a bone block or has been there since birth, I can't change the structure, but I can help with the aches, tight muscles and compensation that come with it.

I start by assessing how far your ankle bends with the knee straight and bent, whether the limit feels like tight muscle or a hard stop in the joint, and how you walk. I also check strength, balance and footwear, and screen sensation and reflexes if you have diabetes or calf spasms.

Easing Tightness

• Hands-on work through the calf and Achilles, including myofascial, trigger point work and muscle stripping
• Warm applications in clinic before stretching
• Contract-relax and slow, sustained calf stretches with the knee straight and bent
• Gentle ankle joint mobilisation where the joint itself is stiff, never forcing against a hard block

Easing Compensation

• Work on the feet, shins, knees, hips and back, wherever compensating has caused strain
• Short-term taping where it helps, and I'll show you how to tape it yourself

At Home and Building Strength

1. American College of Foot and Ankle Surgeons (n.d.) Equinus. FootHealthFacts. Available at: https://www.foothealthfacts.org/conditions/equinus (Accessed: 7 October 2026).
2. Searle, A., Spink, M.J. and Chuter, V.H. (2018) 'Validation of a weight bearing ankle equinus value in older adults with diabetes', Journal of Foot and Ankle Research, 11, p. 62. doi: 10.1186/s13047-018-0306-x.