3-4 days free worldwide delivery

The Foot-Knee Arthrokinetic Relationship

by MASS4D® Prescription Orthotics August 17, 2016

Foot-Knee Arthrokinetic Relationship

Traditional methods of treating knee-specific injuries involve addressing the symptoms of the problem rather than the cause, which in most cases, is the result of weak biomechanical functioning of the feet.

The structure of the knee functions as a one-way hinge which separates the upper and lower leg, limiting its ability to adapt to uneven forces, unlike the foot. 

A study by Levinger et al. observed a reduction in medial joint loading in people suffering from knee osteoarthritis who walk with greater foot pronation.

This was determined to be a consequence of increased rearfoot eversion, rearfoot internal rotation and forefoot inversion; all associated with reduced knee adduction moments during the stance phase of gait.


Offer your Patients a Custom Calibrated Insole with a 98% Patient Satisfaction Rate     know more


These findings need to be kept at the forefront of designing any load-modifying interventions for people with knee osteoarthritis, as they clearly demonstrate the importance of considering the foot-knee dynamic in this process. 

Knee function in the sagittal, coronal and transverse planes is almost directly affected by excessive pronation.

Hyperpronation is not a disorder, but the trigger that leads to the unequal distribution of force in the foot, altering the musculoskeletal system and arthrokinematics of the body.

With abnormal pronation, there is an excessive internal rotation of the ipsilateral tibia, consequentially leading to an excessive internal rotation of the ipsilateral femur as well.
 

This counter-rotation of the femur and tibia causes an increase in the Q angle.

The foot and ankle complex is seen to dorsiflex and abduct, causing the knee and subsequently the hip to flex, adduct and rotate internally.

The result of this compensatory abnormality is an ipsilateral pelvic tilt.

Prolonged exposure to the resultant excessive forces created by the ineffectiveness of the foot function combined with the aberrant tracking of the knee, can produce chronic inflammation and joint degeneration, which manifests in the form of patellofemoral pain.

Copyright 2016 MASS4D® All rights reserved. 


Offer your Patients a Custom Calibrated Insole with a 98% Patient Satisfaction Rateknow more


Related Links
A Multidisciplinary Approach to Foot Posture

References:

  1. Pazit Levinger, Hylton B Menz, Adam D Morrow, John R Bartlett, Julian A Feller and Neil R Bergman (2013) Relationship between foot function and medial knee joint loading in people with medial compartment knee osteoarthritis. Journal of Foot and Ankle Research: August 2013, Vol. 6, No.33

Leave a comment

Comments will be approved before showing up.


Also in Clinicians Blog

Stress Fractures in Leg Length Discrepancy
Stress Fractures in Leg Length Discrepancy

by MASS4D® Prescription Orthotics September 16, 2018

Stress fractures in the lower extremity result from excessive submaximal stress that is repeatedly placed on the region; this leads to accumulation of micro-damage in the region, disrupting bone homogeneity and causing fractures.

Read More

Patellofemoral Pain Syndrome
Patellofemoral Pain Syndrome

by MASS4D® Prescription Orthotics September 09, 2018

Patellofemoral Pain Syndrome refers to a multifactorial pathogenesis that leads to anterior knee pain, most often triggered by increased stress on the patellofemoral joint or cartilaginous lesions on the patella or distal femur.

Read More

Foot Injuries In Rock Climbing
Foot Injuries In Rock Climbing

by MASS4D® Prescription Orthotics September 02, 2018

The presence of extreme forces and environmental hazards during rock climbing can make an individual susceptible to a number of injuries of the lower extremity. This is why it is essential to take preventative measures before undertaking competitive or recreational rock climbing.

Read More