What is an Orthotic?
Foot Orthotics allow the muscles, tendons and bones of the feet through open and closed chain joint migration, up through the legs, hip and lower back, to function at their optimal potential for our body weight, structure, walking pattern and life styles.
When appropriately prescribed and more importantly, appropriately manufactured, Foot Orthotics can decrease pain and discomfort in the foot, ankles, knees, hips and back. Foot Orthotics increase our stability, prevent further progression of bony deformities, soft tissue pain, burning and numbness and help to improve our overall quality of life in our activities of daily living (ADLs).
Remember, foot pain is not normal and should not be ignored. The pain in our feet often is associated with other pains in our lower limbs all due to the poor inherent biomechanics of our foot.
With a foot orthotic supporting the three main arches of the foot the muscles and tendons are able to work within their intended range of motions (ROMs) and we do not run the risk of causing injury or furthering one.
Benefits of Orthotics
Custom Foot Orthotics help in providing relief for painful foot problems or an injury, especially for those who must walk, or stand excessively on the job or in every day activities.
The mechanical properties of the Custom Foot Orthotic help to maintain the normal positioning of the bones in the foot, the joints in the ankle and knees leading up to the hips and lower back. The muscles and ligaments holding these bones in their intended anatomical positions are prevented from over stretching and becoming lax over time.
With enough functional correction from a Custom Foot Orthotic, the foot structure can be aligned to give more propulsion, making walking, running and even cycling more efficient biomechanically.
Along with aligning the foot structure, the Custom Foot Orthotic reduces muscular fatigue and helps to promote more efficient muscle performance thus enhancing performance during the gait cycle.
Below is an example of a foot without the corrective support of an orthotic and then another example of the same foot with a Custom Made Foot Orthotic from POL correcting and supporting the foot. Notice the difference a well made Custom Foot Orthotic makes!
The Structure and Function of an Orthotic
Foot Orthotics are constructed from various materials consisting of plastics, foam, rubbers, and cork composites that are utilized for their mechanical properties.
The main similarity of all Foot Orthotics is the principle of their structure. The core is comprised of a plastic material more commonly referred to as the shell. External support structures on the underside of the shell material are utilized for balance and support inside the footwear; these are commonly referred to as extrinsic posts. Soft padding is placed on the underside and the topside to absorb compression forces when walking and running, this includes the top covers, underlay materials and arch fills.
All of these materials have the goal of improving foot function and minimizing the stress forces that cause foot deformity and pain.
Dependent on the reason for the prescription of Foot Orthotics, all of the above mentioned materials can be utilized in many combinations to achieve three broad categories of Foot Orthotics:
- Those that primarily attempt to change foot function, known as functional Foot Orthotics
- Those that are mainly protective or accommodative in nature, and
- Those that combine functional control with accommodation for comfort.
Foot & Ankle Surgery · Nerve Specialist · Podiatry
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Sesamoiditis
As always, you can contact our office to answer any questions or concerns.
Sesamoids are small bones that are connected only to tendons or are embedded in muscle. This structure appears in only a few places in the human body, one of which is the foot. Two very small sesamoids (about the size of a kernel of corn) are found in the underside of the forefoot near the big toe—one on the outer side of the foot and the other closer to the middle of the foot. Sesamoids provide a smooth surface over which the tendons slide, thus increasing the ability of the tendons to transmit muscle forces. In the foot, sesamoids assist with weight-bearing and help elevate the bones of the big toe.
Like other bones, sesamoids can fracture. Additionally, the tendons surrounding the sesamoids can become irritated or inflamed, which is called sesamoiditis and is a form of tendonitis. Sesamoiditis is a common condition among ballet dancers, runners, and baseball catchers because of the pressures placed on their feet.
Symptoms include:
- Pain under the big toe or on the ball of the foot.
- Swelling and bruising.
- Difficulty and pain in bending and straightening the big toe.
Surgery is usually not required to treat sesamoiditis. Treatments generally include:
- Discontinuation of the activity causing the pain and inflammation.
- Over-the-counter pain medications and anti-inflammatories, such as ibuprofen and aspirin. Note: Please consult your physician before taking any medications.
- Icing the sole of the foot.
- Wearing shoes that are soft-soled and low-heeled.
- Using cushioning in shoes to relieve stress.
- Injection of a steroidal medication to reduce swelling.
If symptoms persist, you may need to wear a removable brace on the leg for 4 - 6 weeks to give the inflammation time to subside and the bones to heal.
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