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Skeletal System of Human ,Main parts of human skeleton, Axial skeletal, Appendicular skeletal, Skull bones, Vertebral Colum bones, Sternum bone, Ribs bones,

 Skeletal System of Human  Human skeletal system consists of numerus bones and few cartilages . OR  The human skeleton is the internal framework of the human body , It consists of bones and connective tissue, including cartilage, tendons and ligaments. Its also called the musculoskeletal system. 
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Examination of The S-1 Nerve Root | S-1 Nerve Root Examination, Sensory examination, Motor examination, Reflex examination , S1, L4 L5,

 Examination of The S-1 Nerve Root

Topics...

  1. S-1 Nerve Root Examination
  2. Sensory examination 
  3. Motor examination
  4. Reflex examination

S-1 Nerve Root Examination

Examination of the S-1 nerve root, there are three elements for examination of the S1 nerve root sensory examination motor examination and reflex examination.

  1. Sensory examination
  2. Motor examination
  3. Reflex examination


 Sensory examination

The sensory examination is easy you examine the lateral side of the foot as you can see here we know the top of the foot is L5 and the medial side of the foot is L4 the sensation of the foot it goes from S1 to l5 to L4 on the foot.


Reflex examination

The reflex is easy also one reflex achilles tendon reflex.


 Motor examination

The motor examination is complicated because there are a lot of muscles that are innervated by the S1 nerve root so what are the muscles innervated by the s1 will be the prenatal longus and previous will be the flexor hallucis longus will be the gastrocnemius and the lateral hamstrings the lateral hamstring is the biceps femoris and the gluteus Maximus so from proximal to distal it will be the gluteus maximus the lateral hamstring the gastrocnemius the flexor hallucis longus and their perineus longus brevis.

So a patient with the herniated disc at L5 S1 affecting issue and nerve root could have energy changes in these muscles you may find sharp waves or fibrillations a posterolateral herniated disc at L5 S1 clearly causes S1 nerve root irritation but a foraminal herniated disc at L5 S1  will cause early 5 radiculopathy and if you have an L5 S1 isthmic spondylolisthesis then that will cause L5 radiculopathy in contrast to S1 the l5 nerve root will involve the extensor.


https://www.blogger.com/blog/post/edit/1447850494392422244/4932062395449977207
L4 L5 S1


Halluces longus and the extensor digitorum longus will also involve the medial hamstring and the gluteus medius the L5 nerve root involvement will come from posterolateral disc herniation at L4 L5 level there is no reflex for L5 but there will be decreased sensation on the top of the foot as you can see here



 

DR ABDUL WARIS PT

 

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