Hip flexors do not initiate hip flexon.

We have been saying it in writing and podcasts for years, the hip flexors are limb swing phase PERPETUATORS, not initiators of hip flexion.
It is the elastic response discussed below and the changing of the pelvis obliquity (from posterior positioning to anterior) via the abdominal wall acting on the pelvis-hip interval in conjunction with the stance phase hip musculature that drives hip flexion.
The next time you go after the psoas as a culprit in your meanderings for solutions, because that is what is all over the internet, think bigger, smarter, deeper.

"These experiments also showed that the trailing leg is brought forward during the swing phase without activity in the flexor muscles about the hip joint. This was verified by the absence of EMG activity in the iliacus muscle measured by intramuscular wire electrodes. Instead the strong ligaments restricting hip joint extension are stretched during the first half of the swing phase thereby storing elastic energy, which is released during the last half of the stance phase and accelerating the leg into the swing phase. This is considered an important energy conserving feature of human walking."

Dan Med J. 2014 Apr;61(4):B4823.
Contributions to the understanding of gait control.
Simonsen EB1.

#thegaitguys, #hip, #hipflexors, #pelvismechanics, #swingphase, #gait, #gaitanalysis, #gaitproblems

Circumducting gait , at the ankle level ?


We often circumduct a leg to get around a clearance problem. Sometimes the clearance problem is the leg length itself, and sometimes it is a foot clearance issue, one that doesn't dorsiflex/toe extend enough.

This is what the foot clearance circumduction strategy looks like (more clear on the left foot). It is a heavy peroneal, tib anterior (more lateral belly, interosseous) and lesser toe extensor strategy. The foot clearly dorsiflexes and everts the rear and fore foot during early swing. It is not until just before heel strike that the tib anterior seem to jump in to do its primary job of dorsiflexion AND inversion.
Finding out why a client is circumducting this way is the key. It could be from the opposite hip abductors being weak, and it could be poor abdominal control on the same side, or it could be down in the foot (perhaps extensor hallucis/big toe extensor) and of highest suspect is a weak or motor pattern delayed tib anterior. Bad lazy habits can happen around trivial weakness, and then can mushroom into other bigger things.

Your exam will help you.
Seeing a problem in someones gait is not their problem, it is their strategy to get around the parts that are not working well.

shawn allen, the other gait guy

#gait, #gaitproblems, #gaitanalysis, #anklerocker, #ankledorsiflexion, #shinsplints, #swingphase, #thegaitguys, #circumductinggait