Home » Services » Biomechanics

Biomechanics

What are Biomechanics?

Biomechanics is the study of physical laws governing the way our body moves and includes subjects such as physics, kinesiology, and human movements. Podiatrists are particularly interested in the relationship between biomechanical aspects of the foot and painful conditions which may develop within the foot itself or other areas such as the ankle, knee hip and lower back. The study of biomechanics has established as association between abnormal function in the foot and problems higher in the body.

How do Biomechanical Abnormalities Affect Us?

 As a species which bears weight on a maximum of only two limbs, and only one limb when run or hop, the correct transfer of force to the walking surface is essential to avoid damaging joints, muscles and ligaments. Abnormalities in the weight bearing function of the foot may therefore expose us to the development of a wide range of painful conditions. Some of these conditions will include acute injuries which occur suddenly, such as ligament and tendon tears.

Chronic conditions such as various forms of arthritis where “accumulated microtrauma” has, over the years, resulted in wear and tear on a joint, may also originate from biomechanical malalignment of our feet and lower limbs. Three basic leg and foot configurations are shown below, two of which display biomechanical adnormalities which could result in pain in the hip, knee or foot.

How can we alter biomechanical abnormalities?

Podiatrists are trained to recognize and assess biomechanical abnormalities in the foot and lower limb. Techniques used in biomechanical assessment include any or all of the following:

- Measurement of the joint movements, muscle functions and positions of bony structures
- Observation of walking patterns.
- Video studies of body movements during walking and running

Following biomechanical assessment treatment is prescribed which may include:

- stretching and strengthening exercises
- mobilization techniques to improve joint function
- modification of changes to footwear
- ‘orthoses’ – custom made inserts worn in the patients shoe designed to improve the biomechanical function of the feet and lower limb.
- Advice on activities such as running, walking and posture.

Providing orthoses requires very careful and accurate assessment of the individual patients biomechanics. Because orthoses are designed to change patients biomechanics it is very important that these changes are correct. Erros or inaccuracy in orthotic prescriptions may result in development of other foot problems.

Most biomechanical orthoses are constructed from casts of the patients foot held in a ‘neutral’ or ‘corrected’ position and are designed to maintain the foot in that position during walking, standing or running.

Should you require any further information regarding any aspect of the information contained on this site contact us now.
 

Contact us now on 02 9680 3646 and make an appointment for us to help fix your feet problems.