Biomechanics & Pathomechanics of Knee Extensors | Quadriceps Uncovered

[@TonysTutorial]

TIME CODES: • KNEE EXTENSORS : 1:20 • LINE OF ACTION OF MUSCLES: 4:15 • VMO & VML ( VASTUS MEDIALIS): 6:40 • PATELLA & QUADS: 11:05 • QUADS AND ACL STRAIN: 20:30 • QUADS IN POSTURE: 22:23 • QUADS IN NON- WEIGHT BEARING : 27:05 • QUADS IN WEIGHT BEARING: 30:20 • PATHOMECHANICS: 32:20

[@surabhipandey3879]

Yeah...Was desperately waiting for Ur tutorial...superb teaching sir....!! Already m a fan of urs 🙏

[@TonysTutorial]

Glad to hear from you🤝, thank you..thts a great appreciation

[@soumiamk5038]

Good explanation..hope that yr students r benefitted from this great effort

[@TonysTutorial]

Thnk u ,i too hope that let them benefit from this to maximum

[@alexgryncharov4450]

You are great! Keep going!!!

[@TonysTutorial]

Thank you…keep watching RegRds

[@shesminshez3323]

Thank u sir for making it understandable Its really helpful

[@TonysTutorial]

Thank you so much

[@gayalal9696]

Excellent class sir👌👌👌 well explained 👏👏soo easy to catch up as every time👍👍Thank u very much sir..

[@TonysTutorial]

Hppy to hear, thnk u

[@mahalakshmibhat701]

Excellent video ....keep up the great work

[@TonysTutorial]

Thanks a lot..

[@revathir.s8304]

Nice class sir👌👌... you made it is very simple... that is really helpful to us... thank you sooo much sir🤗🤗

[@TonysTutorial]

Vry glad to hear

[@luluvalmarjan7619]

Good explanation sir.... Easy to understand 👍

[@TonysTutorial]

Thnk u

[@josnamoljohnson1969]

Super class sir, it is very interesting and energetic 👌👌👌 very easy to catch up 👏 i think sir did a great job, i really appreciate your work 🤝 thanks sir thank you very much.... 😊😊😊 👍👍

[@TonysTutorial]

Vry glad to hear

[@pawaraanchal7239]

Sir do you have videos for other joints as well.? I've almost completed my knee joint with your videos and i wanna learn about all the other joints as well pls do reply due to this pandemic I've to study by myself & only your videos can help me to make this subject much easier! & thank u so much for utilising your precious time in making such amazing video!!! 👍

[@sanhitasengupta4911]

Thanks a lot sir for such good classes 😇

[@aiswaryapp7676]

Excellent video sir👌👌👌

[@TonysTutorial]

Thnk u

[@adhilmusthafa6924]

Great explanation 👍👍

[@TonysTutorial]

Thnk u

[@naikpriyanka13]

ur lacture is very useful in my study practically as well theorically.can u plz take lectures on gait analysis and muscles acting during gait in different phases?there will be great help.Thanks

[@naikpriyanka13]

or do u written any book on that?than plz suggest your book name only

[@qudsiaintizar9851]

Ur videos are really informative sir ,I have one confusion can u plz explain that if moment arm in open chain is greatest in knee extension so why quads need to work harder in order to get terminal extension ..b/c if moment arm is greater less force can create greater torque I believe ....

[@TonysTutorial]

I think u went confused somewere the moment arm of quads is high in full knee flexion becaause of round shaped femoral comdyle deflect muscles action line. When knee extension starts moment arm also increases but it reaches maximum at 50 degree flexion and aftr that it agin decreases.Thts why terminal extension is tough work for quads

[@badalkc4697]

soleus pull tibia posterior means knee is in flexion or extension ? 26.00 can you please explain this .Thank you . your videos are great

[@freespirit7328]

Soleus in Close kinematics (when Foot is Fixed) will pull upper part of tibia Backwards while In the same position...Gluteus maximus will pull femur backwards...ultimately at kne joint...this whole phenomenon will try to cause Knee to go into Extenstion and Thus we need minimal Use of Quadriceps during Standing....this is what causes Line of gravity to pass anterior to the Knee joint!

[@freespirit7328]

Nice Dear!🙏👍

[@malavikak5655]

Excellent cls Sir 💯

[@TonysTutorial]

Glad to hear

[@nikitanaik5483]

hello sir , in 30.2 min you have explained about the quads role in non weight bearing, does that mean , as the patient goes from flexion to extension , the work of quads increases ?

[@TonysTutorial]

ya yes ..u r right

[@nikitanaik5483]

But sir as the range is increasing, MA is increasing, so the efficiency of muscle should increase as u mentioned early.. so how come work load increases as the range increases? It should actually decrease ryt? I may be wrong but i am confused in this concept 😅

[@TonysTutorial]

@@nikitanaik5483 here the scenario is weight cuff tighted to the leg right..just have a glance at diagram on board 30.23. We are taking about that scenario, as knee goes to extension the weight cuff also lies away from joint or its MA increases too, thats why quads need to work more

[@nikitanaik5483]

Ohh yes.. I got it ! Thank you so much 😊

[@dhanushiyag9760]

Moment arm in role of patella in quadriceps muscle is not clear for me sir

[@aiswaryababu8011]

Good class sir👏👏

[@TonysTutorial]

Thnk you

[@nishanak9202]

Nice class 💯

[@TonysTutorial]

Thnk u

[@shaistanaseem9049]

Zabardast 👍

[@ayishamohammed4799]

Nice class sir 👌👌

[@TonysTutorial]

Thnk u

[@Tanvisatte]

sir can you suggest some good books for MCQ solving and building concepts the more conceptual manner ???? this was indeed a fun and conceptual lecture thankyou so very much !!!!!!!!! literally felt like had a simplified version of line to line from cynthia c norkins !

[@TonysTutorial]

thats so nice and happy thing to hear...I appreciate your efforts and thnk you... and for MCQ I m not aware of the same but we have a 1000 question mcc set in biomechanics and 500 questions mcc set in electrotherapy...if intrested I will share more details

[@shabnamk9249]

Nice class sir

[@TonysTutorial]

Thnk u

[@sherlyozhakal912]

Good one

[@TonysTutorial]

Thnk u

[@manishamasand4716]

Good evening sir, so very commonly we attribute terminal extension to vmo specifically and that it's said that its necessary to strengthen the vmo in oa and ant knee pain as it will reduce the stresses on the joint by avoiding it to get an active lag. So is this really true or it's a clinical myth sort of?

[@TonysTutorial]

Yes, correct as far as from biomechanical point of view its a myth as VMO or VML are fibers of same muscle innervated by same nerve....so how can we recuirt just the VMO and what about VML....will it not be activated. still its showing good results in treatrment may be bcz both of them are getting strenghted note: this is just one view....search to what latest stdies prooves and follow it good luck

[@manishamasand4716]

@@TonysTutorial yesss sir thankyou sooo much🙏🙏 your videos are making me feel well equipped and are also sparking an interest in biomechanics 😄😄

[@dhanabakiyam.l7024]

Does Moment arm increases ,force generation capacity increases?

[@TonysTutorial]

hai,sorry for delay in reply....its that when moment arm increases the torque generation capacity of muscle that increases,which means increase in moment arm enable muscle to produce more torque without actually increasing the force generation by muscle. Torque = Force * Moment arm. good luck

[@dhanabakiyam.l7024]

Thank you sir🙂🙂

[@TonysTutorial]

Dhanabakiyam Laxmanan my pleasure

[@siri_kari7480]

Great content but could you pls speak slowly and more clear sir🙏🏻

[@ruksaashraf9664]

Nice class👍💯

[@TonysTutorial]

Thnk u

[@subhashk2644]

Nice class 👍

[@TonysTutorial]

Thnk u

[@aswathyvijayarajd5866]

Nice class🤗

[@TonysTutorial]

Glad to hear, thank you

[@fidhamusthafa9014]

Nice class sir

[@TonysTutorial]

Thnk u

[@farhanrafi2666]

Nice class sir👍👍💯

[@TonysTutorial]

Thnk u

[@roojapp9730]

Nice class sir 👌👍

[@TonysTutorial]

Thnk u