Wednesday, December 31, 2003
Intrinsic pedal musculature support of the medial longitudinal arch: An electromyography study
Just came across this study from the recent Journal of Foot and Ankle Surgery:
The authors did this (I have edited the abstract for brevity):
Ten adults served as subjects. The height of the navicular tubercle above the floor was measured while subjects were seated with the foot in a subtalar neutral position and then when standing in a relaxed calcaneal stance. Recordings of muscle activity from the abductor hallucis muscle were performed while the subjects maintained a maximal voluntary contraction in a supine position by plantarflexing their great toes. An injection of lidocaine (1% with epinephrine) was then administered in the region of the tibial nerve, posterior and inferior to the medial malleolus. Measurements were repeated and compared by using a paired t test. After the nerve block, the muscle activity was 26.8% of the control condition (P = .011). This corresponded with an increase in navicular drop of 3.8 mm. (P = .022). The observation that navicular drop increased when the activity of the intrinsic muscles decreased indicates that the intrinsic pedal muscles play an important role in support of the medial longitudinal arch.
This will make a good study to give to the students ... notice anything wrong reaching the conclusion of indicates that the intrinsic pedal muscles play an important role in support of the medial longitudinal arch based on the methodology used? I have no doubt that the intrinsic muscles are important, but they do not even start contracting during gait until the heel begins to come of the ground - the study tested the intrinsic muscles with the heel on the ground ... to quote CK ... what say you?
Just came across this study from the recent Journal of Foot and Ankle Surgery:
The authors did this (I have edited the abstract for brevity):
Ten adults served as subjects. The height of the navicular tubercle above the floor was measured while subjects were seated with the foot in a subtalar neutral position and then when standing in a relaxed calcaneal stance. Recordings of muscle activity from the abductor hallucis muscle were performed while the subjects maintained a maximal voluntary contraction in a supine position by plantarflexing their great toes. An injection of lidocaine (1% with epinephrine) was then administered in the region of the tibial nerve, posterior and inferior to the medial malleolus. Measurements were repeated and compared by using a paired t test. After the nerve block, the muscle activity was 26.8% of the control condition (P = .011). This corresponded with an increase in navicular drop of 3.8 mm. (P = .022). The observation that navicular drop increased when the activity of the intrinsic muscles decreased indicates that the intrinsic pedal muscles play an important role in support of the medial longitudinal arch.
This will make a good study to give to the students ... notice anything wrong reaching the conclusion of indicates that the intrinsic pedal muscles play an important role in support of the medial longitudinal arch based on the methodology used? I have no doubt that the intrinsic muscles are important, but they do not even start contracting during gait until the heel begins to come of the ground - the study tested the intrinsic muscles with the heel on the ground ... to quote CK ... what say you?
Thursday, December 25, 2003
Email updates when this page changes
Managed to get a 'sign up' box in the top right of this page. If you want email notification when I add something here, sign up. Thanks to Robert for putting this together, as I was a bit too much technically challenged when it comes to this. Merry Christmas. SEO Alert
Managed to get a 'sign up' box in the top right of this page. If you want email notification when I add something here, sign up. Thanks to Robert for putting this together, as I was a bit too much technically challenged when it comes to this. Merry Christmas. SEO Alert
Wednesday, December 24, 2003
Friday, December 19, 2003
What do researchers do when they get bored?....
.... contribute to the xmas edition of the British Medical Journal
Gems this year include:
Australia versus New Zealand: an emotional meta-analysis of rugby
Car colour and risk of car crash injury
Enjoy..
.... contribute to the xmas edition of the British Medical Journal
Gems this year include:
Australia versus New Zealand: an emotional meta-analysis of rugby
Car colour and risk of car crash injury
Enjoy..
Wednesday, December 17, 2003
New full text article on line
This just appeared in the American Family Physician:
Evaluation and Management of Toe Fractures
This just appeared in the American Family Physician:
Evaluation and Management of Toe Fractures
Saturday, December 13, 2003
Back...
Back from the PFOLA conference. It was one of the better ones ... so much more science in it now, with a lot of that being relevant to clinical practice (...about time). It seems that every second presentation at the conference was either on the windlass mechanism, the medial column or functional hallux limitus --- can't complain about that as it all fitted in so nicely with all our work at LTU.
Some new full text articles on-line from Podiatry Today:
How-To Insights For Expanding Your Practice
Are Your Patients Taking Herbal Meds?
How To Select The Right Procedure For Hallux Limitus
This paper has also just been published in Medicine & Science and Exercise and Sport:
Effect of Inverted Orthoses on Lower-Extremity Mechanics in Runners
... been waiting for this for a while - it is a significant advance in our understanding of how foot orthoses work (ie alter the kinetics more than the kinematics).
Powerlinks
Back from the PFOLA conference. It was one of the better ones ... so much more science in it now, with a lot of that being relevant to clinical practice (...about time). It seems that every second presentation at the conference was either on the windlass mechanism, the medial column or functional hallux limitus --- can't complain about that as it all fitted in so nicely with all our work at LTU.
Some new full text articles on-line from Podiatry Today:
How-To Insights For Expanding Your Practice
Are Your Patients Taking Herbal Meds?
How To Select The Right Procedure For Hallux Limitus
This paper has also just been published in Medicine & Science and Exercise and Sport:
Effect of Inverted Orthoses on Lower-Extremity Mechanics in Runners
... been waiting for this for a while - it is a significant advance in our understanding of how foot orthoses work (ie alter the kinetics more than the kinematics).
Powerlinks
