Introduction: The foot. İt is a highly complex functional organ of balance and propulsion. It acts not only as the foundation for the rest of the body, but also, its function affects every other motion in the body. It has two prime functions which are a loose adaptor and a rigid lever.
Clinical biomechanics. Clinical gait analysis with kinematic and kinetic systems is necessary to better understand foot function and dynamic structure of the foot.
And also this helps to find the source of the pathome chanics Chain reaction biomechanics. Motion of the feet causes movement up the kinematic Chain Reaction to theknee, hip, and spine. It is important to learn about the complexity of the feet. But, it is essential to appreciate the practical simplicity of the feet during functional movements.
Landing biomechanics. Malalignment or dysfunction of the foot can increase the risk of landing-related trauma such as anterior cruciate ligament injury, particularly in female soccer players. But dynamic functional insoles can help alter landing mechanics in ways that can de crease that injury risk.
Dynamic functional insoles. They are designed based on dynamic gait analysis datas using foot plantar pres sure measurement systems.They help normal foot function while preventing excessive ones. Therefore they can be used without time restrictions. Dynamic func tional insoles can help with injury prevention, faster recovery from injury and performance improvement. And also they can reduce the risk of re-injury.
Case report
He was 35 year old male with on the sole of the feet, occasional pain in the knee and hip joints. Kinetik gait analysis was made by Materialise footscan system. The measurements were made using a 2m long footscan plate in a special 12m running track. The running protocol was applied 6 times in such a way that running starts 6 meters before the plate and finishes 4 meters later. Thus, it was ensured that he reached his own running speed on the plate and continued at the same speed. Analysis and insole design were made by footscan
v9 software and the system recommended dynamic functional insoles were given in a week.
When the insoles were delivered to him, he was told to come for control in 10 weeks. When he came to the control, he said that his complains were completely gone in a week after he started using insoles, then with insoles, he started running 10.000 meters four times a week and playing soccer two times aweek. The same analysis was performed again with thesame system. A significant improvement in plantar load distribution and as well as improvement in dynamic foot type was observed compared to first analysis (Figure 1)
Figure 1: Improvement in the plantar rearfoot, midfoot, forefoot loads distribution and as well as improvement in dynamic foot type after 10 weeks of wearing dynamic functional insoles
Summary
The foot is a a highly complex functional organ. There fore, dynamic kinetic and kinematic foot analysis is needed to fully understand the foot and to design dynamic functional insoles. Foot biomechanical problems (pathomechanics) can be better solved with biomechanical solutions. One of them is dynamic functional insoles. This case study has given important clues that the benefits of dynamic functional insoles can occur in a shorter time as the daily usage time increases.
References:
Andrew Franklyn-Miller, Cassie Wilson, James Bilzon, and Paul McCrory. (2010). Foot Orthoses in the Prevention of Injury in Initial Military Training. AJSM 1, doi:10.1177/0363546510382852
Andrew Franklyn-Miller, Cassie Wilson, James Bilzon, and Paul McCrory. (2014). Can RSScan footscan® D3D™ software predict injury in a military population following plantar pressure assessment? A prospective cohort
study. The Foot. 24 (1): 6 – 10 Dufek JS, Bates BT. Biomechanical factors associated with injury during landing in jump sports.
Sports Med 1991;12(5):326-337.
Reed Ferber, Shari Macdonald.(2014). Running Mechanics and Gait Analysis.
Human Kinetics.
Ronald L. Valmassy. (1996).Clinical Biomechanics of The Lover Extremity.
Mostby, Inc.
Chaudhari AM, Andriacchi TP. (2006).The mechanical consequences of dynamic frontal plane
limb alignment for non-contact ACL injury. J Biomech 39(2):330-338.
Seung-Bum Park, Kyung-Deuk Lee, Dae-Woong Kim, Jung-Hyeon Yoo, KyungHun Kim. (2014).
An analysis of functional insole on foot pressure distribution of shape
memory material
combinations. J Foot Ankle Res. 7(1): A120.
Janice K. Loudon, Robert C. Manske, Michael P. Reiman. (2013). Clinical Mechanics and Kinesiology.
Human Kinetics.
Boden BP, Torg JS, Knowles SB, Hewett TE. (2009)ç Video analysis of anterior
cruciate ligament injury: abnormalities in hip and ankle kinematics. Am J
Sports Med 37(2):252-259
