Thursday, 11 May 2017

Know Your Muscle : Hamstring Muscle Detail

 Hamstring (Lower Limb Muscle ) :
Hamstring Muscle Detail


In human anatomy, a hamstring is a Group Of three muscle in posterior side of thigh  (from medial to lateral: semimembranosus, semitendinosus and biceps femoris).
Main Action Of Hamstring is Flexion Of Knee Joint. Working With Quadriceps And Mainly Doing Co-Contraction During Running And Our Day-to-day Activities And Tightness is the most common in this Muscle require Stretching Exercise At Regular Interval.


Common Features Of Hamstring Muscle : 

They All Originates Arounds Tibial Tuberocity.
Insertion Below Knee Joint Over Tibia or Fibula.
Innervated By Tibial Nerve Branch Of Sciatic Nerve.
Must Flex The Knee And Extends The Hip Joint

All This Functionality is Compulsory to include in Hamstring Group.


Origin And Insertion  :

Semimembranosus : Origin From Ischial Tuberocity And Insertion over Medial Tibial Condyle.

Semitendinosus : Origin Also From Ischial Tuberocity And Insertion Over Medial Surface Of Tibia.

Biceps Femoris (Long Head ) : Origin Also From Ischial Tuberocity And Insertion Over Lateral Side Of The Head Of The Fibula.

Biceps Femoris (Short Head) : Origin From linea aspera & lateral supracondylar line of femur And Insertion Over Lateral Side Of The Head Of The Fibula With Long Head Common Tendon.

Nerve Supply : 


Semimembranosus,Semitendinosus And Biceps Femoris Long Head Nerve Supply is Tibial Nerve Part Of Sciatic Nerve.

Biceps Femoris Short Head Nerve Supply is Common Peroneal Nerve Part Of Sciatic Nerve.

Action Of Hamstring Muscle : 


Strenthening Exercise Of Hamstring Muscle


Hamstring Muscle Crosses Two Joint So Working Chiefly Over The Knee Joint And Do Strong Action is Knee Flexion And Part time Also Helping in Hip Extension With Gluteus Maximus.

Semimembranosus,Semitendinosus Extends Hip Joint And Flex The Knee Joint And Also Rotate Knee Joint When Knee is Flexed.

Long Head Of Biceps Femoris is Extends The Hip Joint And Both Long And Short Head Flex The Knee Joint And Laterally Rotate The Hip When Knee Flexion Position.

Hamstring is One Of The Strongest Antagonist Muscle As Compared To Other Antagonist Muscle Require All Day To Day Activity Like Running, Jumping, Walking , Squating And Working With Quadriceps and Doing Co-contraction.
Co-Contraction Of Hamstring And Quadriceps Muscle 



Clinical Significance :

Hamstring Muscle Is One Of The Commonest Muscle That Tightness Is Present Too Often And Require Regular Stretching Exercise To Avoid to Tear Or Damage to Related Muscle And Ligament.Sciatica is Also Associated With Tightness Of Hamstring is seen Too Often.
Semitendinosus is Also Used In Surgery Of ACL Ligament Reconstruction Surgery.

Exercise Of Hamstring Muscle :


Strenthening Of Hamstring  In Standing Position


Strengthening Exercise : Strentherning Exercise In Prone Position With Sandbag in Early Stage And Later Stages Standing Position Body Towards Wall And Flexed With Sand Bag is Most Common Exercise.


Home Based Stretching Exercise Of Hamstring Muscle 


Stretching Exercise :  Long Sitting Position And Toe Touch is One Of The Most Common Hamstring Stretching Exercise And This Position in Yoga Called " Paschimotanasan- Yoga Position ".


Hamstring Muscle Stretching In Supine Position














Related Article : 


Calf Muscle Detail

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