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Ankle dorsiflexion is a crucial movement of the ankle joint, which is one of the most valuable structures in the human body. Dorsiflexion is the upward bending of the mid- and forefoot while the tibia and fibula remain stationary. The muscles involved in dorsiflexion include the tibialis anterior, extensor digitorum longus, extensor hallucis longus, and fibularis tertius, which all lie in the anterior compartment of the leg. Restriction in this plane of motion can lead to ankle pain, reoccurring sprains, and even pain in other areas of the body, such as the knee, hip, or back.
| Characteristics | Values |
|---|---|
| Muscles involved | Tibialis anterior, extensor digitorum longus, extensor hallucis longus, fibularis tertius, peroneus longus, peroneus brevis, gastrocnemius, soleus, plantaris, tibialis posterior, flexor digitorum longus, flexor hallucis longus |
| Location of muscles | Anterior, posterior, and lateral compartments of the leg |
| Range of motion | 10-20 degrees, with some sources stating up to 25 degrees, and others stating 15-20 degrees as the mean and maximum. Very flexible individuals may reach 40 degrees, while less flexible individuals may only reach 5 degrees. |
| Function | Allows for the raising of the mid- and forefoot while the tibia and fibula remain static, causing an upward bend at the ankle joint. It is important during the gait cycle, lifting the foot and toes to prevent them from dragging on the ground. |
| Related injuries and issues | Ankle sprains, ACL tears, ankle pain, knee pain, hip pain, low back pain, restricted movement, poor mobility, etc. |
| Rehabilitation techniques | Sled push, squats, lunges, barefoot training, stretching, strengthening exercises, etc. |
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What You'll Learn
- Muscles involved in ankle dorsiflexion: tibialis anterior, extensor digitorum longus, extensor hallucis longus, and fibularis tertius
- Ankle dorsiflexion exercises: sled pushes, squats, lunges, and barefoot training
- Antagonists to dorsiflexion: the calf muscle (gastrocnemius) and soleus
- Agonist muscles: the muscles that dorsiflex the ankle
- Dorsiflexion and gait: dorsiflexion prevents the foot from dragging on the ground
Muscles involved in ankle dorsiflexion: tibialis anterior, extensor digitorum longus, extensor hallucis longus, and fibularis tertius
Dorsiflexion of the foot occurs at the ankle joint. The movement involves the raising of the mid- and forefoot, while the tibia and fibula remain static, causing an upward bend at the ankle joint. The muscles involved in ankle dorsiflexion include the tibialis anterior, extensor digitorum longus, extensor hallucis longus, and fibularis tertius.
The tibialis anterior is the most superficial and anterior-facing muscle among the dorsiflexors. It is located in the anterior compartment of the leg and is responsible for dorsiflexing and inverting the foot at the ankle joint. Alongside the tibialis anterior is the extensor digitorum longus, which also contributes to dorsiflexion and assists in extending the toes.
Just below the superficial surfaces of the tibialis anterior and extensor digitorum longus lies the extensor hallucis longus. This slender muscle is responsible for extending the big toe and plays a role in dorsiflexion. The fibularis tertius, also known as the peroneus tertius, is another muscle involved in dorsiflexion. It is located in the distal half of the fibula, extending into the space between the fibularis brevis and extensor digitorum longus.
The range of motion for dorsiflexion can vary between individuals due to differences in flexibility. Generally, 15-20 degrees is considered the average and maximum range for most individuals. However, highly flexible people can achieve up to 40 degrees of dorsiflexion, while less flexible individuals may only reach 5 degrees.
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Ankle dorsiflexion exercises: sled pushes, squats, lunges, and barefoot training
Ankle dorsiflexion is facilitated by the muscles in the anterior compartment of the leg, including the tibialis anterior, extensor digitorum longus, extensor hallucis longus, and fibularis tertius. The movement is restricted by the posterior leg muscles, the joint capsule, and ligaments.
Sled Pushes
While sled pushes are not directly mentioned in relation to ankle dorsiflexion, this exercise can be a good way to improve overall lower body strength and stability, which can indirectly benefit ankle dorsiflexion.
Squats
Squats are a popular exercise to improve ankle dorsiflexion. The deeper you go into the squat position, the more dorsiflexion motion is needed. A maximal squat depth just past parallel requires almost 35 degrees of dorsiflexion.
To incorporate squats into your routine, you can perform a squat or split squat variation for 2-4 sets of 6-12 repetitions with a 3-5 second hold at your end range, 2-4 times a week.
Lunges
Lunges are another effective exercise to improve ankle dorsiflexion. For this exercise, you drive your knee as far over your second toe as possible while keeping your heel on the ground.
You can perform a weight-bearing lunge variation for 2-4 sets of 30-60 second holds, 2-4 times a week.
Barefoot Training
When assessing your range of motion, it is recommended to perform exercises like squats and lunges barefoot or while wearing minimalist shoes to get the most accurate measurement.
Additional Tips
- Aim for at least 5-10 minutes a week at your end-range ankle dorsiflexion at an appropriately challenging level.
- Focus on movement quality and keep the exercises tolerable. It's okay to experience some discomfort, but the exercises should not be unbearable.
- You can also use equipment like a cable column with a strap around your foot, various types of bands, or a special piece of equipment like a tib bar or ankle strap.
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Antagonists to dorsiflexion: the calf muscle (gastrocnemius) and soleus
The calf muscle is a composite muscle called the triceps surae, formed by the gastrocnemius, soleus, and plantaris. The gastrocnemius is a two-headed muscle in the back part of the lower leg of humans. It runs from just above the knee to the heel, extending across the knee, ankle, and subtalar joints. The soleus is a muscle that lies deeper than the gastrocnemius. Some anatomists consider the gastrocnemius and soleus to be a single muscle, as they share a common insertion via the Achilles tendon.
The calf muscle, along with the soleus, is the main plantar flexor of the ankle joint and a secondary knee flexor. The gastrocnemius is primarily involved in running, jumping, and other "fast" movements of the leg, and to a lesser degree in walking and standing. The soleus, on the other hand, has more red muscle fibres (type I slow twitch) and is the primary active muscle when standing still.
The gastrocnemius and soleus are antagonists to dorsiflexion. Dorsiflexion is the upward bending movement of the foot at the ankle joint, while plantar flexion is the downward bending movement. If there is muscle tightness in the calf muscle and soleus, it can restrict the range of motion at the ankle joint, leading to a lack of proper dorsiflexion and plantar flexion. This restriction can contribute to ankle pain, sprains, and even knee, hip, or back pain.
To stretch the gastrocnemius, the knee of the back leg is kept extended, while for the soleus, the knee of the back leg is flexed. Exercises such as the sled push can help strengthen the muscles that aid in dorsiflexion and improve flexibility.
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Agonist muscles: the muscles that dorsiflex the ankle
The agonist muscles that dorsiflex the ankle are located in the anterior compartment of the leg. These include the tibialis anterior, extensor digitorum longus, extensor hallucis longus, and fibularis tertius (or peroneus tertius) muscles. The tibialis anterior is the most superficial and anterior-facing muscle among them. The extensor digitorum longus lies along its lateral border. Just below the more superficial surfaces and between the tibialis anterior and extensor digitorum longus is the slender main body of the extensor hallucis longus.
The tibialis anterior and the extensor hallucis longus produce dorsiflexion and inversion of the foot. The peroneus tertius produces dorsiflexion and eversion of the foot. The extensor digitorum longus produces only dorsiflexion of the foot.
The peroneus longus and peroneus brevis muscles, found in the lateral compartment of the leg, facilitate eversion of the ankle joint. The deep posterior compartment is composed of the tibialis posterior, flexor digitorum longus, and flexor hallucis longus, which produce plantar flexion and inversion of the foot.
Dorsiflexion is the upward bending of the mid- and forefoot while the tibia and fibula remain static, causing an upward bend at the ankle joint. It is an essential movement of the ankle joint, occurring during the gait cycle, and helping to lift the foot and toes to prevent them from dragging along the ground.
Weakness in the agonist muscles that dorsiflex the ankle is a common issue observed in patients. This can lead to restricted movement and ankle sprains. Specific exercises, such as stretching and strengthening routines, can help improve dorsiflexion and address these issues.
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Dorsiflexion and gait: dorsiflexion prevents the foot from dragging on the ground
Dorsiflexion is a movement of the ankle joint that involves the raising of the mid- and forefoot while the tibia and fibula remain static, causing an upward bend at the ankle joint. The muscles that facilitate dorsiflexion include the tibialis anterior, extensor digitorum longus, extensor hallucis longus, and fibularis tertius. These muscles lie in the anterior compartment of the leg.
The ability to perform dorsiflexion is crucial during the gait cycle, which is the sequence of movements that occurs during walking. During the gait cycle, the foot goes through different phases, including the swing phase and the stance phase. The swing phase is when the foot is not in contact with the ground, and the stance phase is when the foot remains flat on the ground.
During the swing phase, dorsiflexion is important for lifting the foot and toes to prevent them from dragging along the ground. This is particularly relevant in conditions such as foot drop, where there is an impairment in the ability to raise the foot or toes from the ankle (dorsiflexion). Foot drop can cause the toes to drag along the ground during walking, and patients may compensate by lifting their foot higher than usual to avoid dragging. This can result in an unsteady gait and an increased risk of falls.
To prevent foot dragging and maintain a normal gait cycle, specific exercises can be performed to strengthen the muscles involved in dorsiflexion. For example, the Gray's Anatomy Academy recommends adding a sled push to the training regimen to improve flexibility and strengthen the muscles that aid in dorsiflexion. Additionally, maintaining proper dorsiflexion during upper leg strengthening exercises, such as leg extensions, can also help strengthen the muscles involved in dorsiflexion.
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Frequently asked questions
The muscles involved in dorsiflexion include the tibialis anterior, extensor digitorum longus, extensor hallucis longus, fibularis tertius, and peroneus tertius.
Dorsiflexion is the upward bending of the mid- and forefoot while the tibia and fibula remain static. These muscles facilitate this movement, with the peroneus tertius also producing eversion of the foot.
The normal range of motion for a dorsiflexed ankle typically falls between 10 and 20 degrees. However, Roaas and Anderson observed 40 degrees of dorsiflexion in highly flexible individuals, while less flexible individuals achieved up to 5 degrees.
Limited ankle dorsiflexion can lead to issues with gait and mobility. It may cause knee flexion to increase beyond a safe range, potentially leading to ACL tears. Additionally, it can result in ankle sprains due to faulty biomechanics.
Limited dorsiflexion caused by tight calves or muscular imbalance can be improved through specific exercises and stretches. These include squats, lunges, calf stretches, and training barefoot to allow for natural dorsiflexion.
