Biomechanics Lecture 11: Gait

In this biomechanics lecture, I discuss the mechanics of the human walking or gait cycle including key events, joint angles and muscle activity.

[aleealy]

7:51 initial contact
9:22 loading response
10:18 mid stance
11:09 terminal stance
12:12 pre-swing
13:10 toe off

Swing Phase
14:09 initial swing
15:04 mid swing
15:37 terminal swing

[louwit]

Spent 4 hours in class trying to understand this, just for the teachers to decide that the way they told us was not good enough and that we needed to do it ourselfs with the powerpoints they provided us. Ofcourse i understood nothing of it. Now i understand it completely within just 30 min. I am so greatfull that you made this video so that i can pass my exam with the correct infromation!

[kosstath]

Can someone point me to the source of the gait cycle overview presented at 18:06?

[robertbissett]

Great video. Except for two issues... at 13:25 you talk about "pushing off" with the toe and no mention of the pelvis in the gait. What do I know about it? I've been living it. Sixteen months ago I ruptured my Achilles tendon. A month in the boot, non-op, calf atrophied with loss of strength, then in a shoe, but being very careful, using a cane. Walking with a limp became the new normal, a new habit. Been trying to relearn how to walk ever since. I began watching videos by experts like yourself who all said that pushing off with the toe was required. I focused on rehabbing that calf, but it didn't respond and still hasn't to this day. Then the peroneal tendonitis started and calf work was impossible for about five months. Every step was painful. I was not capable of pushing off. At 78 I was beginning to think I was going to walk with a limp the rest of my life. I found a PT who, against the accepted wisdom, said there is no push off from the toe. Even your video of the woman walking backwards on the treadmill you can easily see she is not pushing off with the toe, but rather lifting the toe and swinging the leg forward while maintaining forward momentum with the opposite leg pulling her forward. There is some minor calf involvement as weight is shifting to the other leg, but not an actual push off. It's true some do push off with the toe, but doing so causes a bouncing gait which is odd looking and less efficient. I began to focus on swinging that rear leg forward which helped a little, but still limping. I came across a mention of the pelvis in walking. "Don't walk like a robot", the fellow said as he walked exaggerating the motion of the pelvis. So, about two weeks ago I began to focus on the motion of the pelvis as the leg swing begins. Presto, the limp instantly disappeared. I could hardly believe it! After all these months and so simple a fix. It felt awkward and five or six times a day I'd forget and start limping again. Now, after a couple weeks it feels more normal. Running is not possible for now since that requires more calf strength than I have. I'd be interested to know what you think about all that.

[sonjaangell]

Thank you for this video. The fact that I can slow it down and repeat it and have the power point to refer to…immensely helpful!!! I now have hope for understanding.

[carateume]

i just wanna say a HUGE thank you to your lecture series! it helped me go through our biomechanics class in PT school. you even teach better than my professor in some topics just like this! thanks for making this subject more digestible and less complex!! i hope you make more of these soon!

[misselik]

You literally uploaded this video right when I needed it! just started to learn about gait in my classes at uni.

[MONEYVAL]

where can i get those sample footage shown here in the begining of the walk cycle?

[accopt]

What is the name of the equipment used for gait analysis in the video? Is it an app?

[morin]

Hi, Thank you very much for the series. I am currently learning how characters move in animation and these are good points to know what to look into. Thank you once again!

[hilatlumakshaham]

I don't know how many viewer you have, half of them I mine. Great way of teaching the gate cycle, kinematics and kinetics. TX

[hothead]

From those points on the knee, ankle. Is it possible to get the heel strike angle and toe off angle?

[timothyvanpelt_cyclist]

I think you explained it clearly again! Thanks a lot. I shared your lectures with some fellow PT students.

[唐崇智-us]

Hi，if the patient's pelvis is initiated from a position of 5 degrees of posterior rotation during the INITIAL CONTACT phase and is accompanied by downward tilt" of the pelvis on one side at an angle of 13 degrees, what does this reveal?

[SwissMissMonika]

Thank you for everything! Is there a link to the pdf of the one page gait cycle summary

[BeeSaucySkateboarding]

Thanks so much for this free information. Every lecture i learned something that will help me rehabilitate an injury in one of my family members! I am also a skateboarder so the lower extremity lectures were especially helpful

[arshifiroz]

me watching all the lectures 1 day before my masters biomechanics exam XD
Thankyou for such informative and concise series ^_^

[단팥빵-wy]

Thank you for your lecture.
Watching your video makes me want to study English more.

I'm currently an athlete and I'm receiving a lot of help with rehabilitation through your videos and Instagram posts.

[daphneschaffers]

What a nice lecture! Thank you, I really enjoyed this,

[beautifulmotherlove]

thanks you for the clarity. my question- if you recognise a phase whic you dont do as the instructions here. how do you teach it to your trainee? just by awareness>? bones repositioning?