USMLE Step 1 Review 01 17 Anatomy Hip Function

USMLE Step 1 Review 01 17 Anatomy Hip Function

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Let’s continue our USMLE Review with Anatomy from the Gold Standard USMLE Step 1 Audio Review program.

Play USMLE Audio MP3 01 17 Anatomy Hip Function Below

 

Begin 01 17 Anatomy Hip Function Transcription

In this one, we’re gonna concentration just on the primary muscles.

What are the six motions of the lower limb and hip function?

  • Extension, flexion, A-B-duction, adduction, outward and inward rotation.

What is the muscle and nerve for extension of the lower limb?

  • Gluteus maximus/inferior gluteal nerve.

Muscle and nerve for flexion of the hip?

  • Iliopsoas muscle/femoral nerve.

Muscle and nerve for A-B-duction?

  • Gluteus medius/superior gluteal nerve.

Muscle and nerve for adduction of the lower limb?

  • Adductor magnus and minimus/obturator nerve.

Muscle and nerve for outward rotation?

  • Obturator muscles/obturator and sacral plexus nerves L3-S2.

Muscle and nerve for inward rotation of the hip?

  • Gluteus medius and minimus/superior gluteal nerve.

Let’s turn it around. I’ll give the muscle, respond with the motion and the nerve.

Gluteus maximus muscle?

  • Extension, inferior gluteal nerve.

Gluteus medius?

  • Abduction, superior gluteal nerve.

Adductor magnus and minimus?

  • Adduction, obturator nerve L3-L4.

Gluteus medius and minimus?

  • Inward rotation, superior gluteal nerve.

Iliopsoas?

  • Flexion, femoral nerve.

Obturator muscles? 

  • Outward rotation, obturator nerve and sacral plexus L3-S2.

This time give the muscle, nerve and cord levels.

Extension of the hip?

  • Gluteus maximus muscle/inferior gluteal nerve L3, S1, S2.

Flexion of the hip?

  • Iliopsoas muscle/femoral nerve L2, L3.

A-B-duction?

  • Gluteus medius/superior gluteal nerve L4, L5, S1.

Adduction?

  • Adductor magnus and minimus muscles/obturator nerve L3, L4.

For inward rotation?

  • Gluteus medius and minimus/superior gluteal nerve L4, L5, S1.

And for outward rotation?

  • Obturator muscles/obturator nerve and sacral plexus L3 -S2.

Student-doctor, please pause the tape here and summarize the six motions of the lower limb and hip function, giving the muscles, nerves and cord levels. Start with the six motions.

  • Extension, flexion, A-B-duction, adduction, outward and inward rotation. For extension, gluteus maximus muscle/inferior gluteal nerve L3, S1, S2. For flexion, iliopsoas muscle/femoral nerve L2, L3. A-B-duction, gluteus medius muscle/superior gluteal nerve L4, L5, S1. For adduction, adductor magnus and minimus muscles/obturator nerve L3, L4. For inward rotation, gluteus medias and minimus/superior gluteal nerve L4, L5, S1. And finally for outward rotation, obturator muscles/obturator nerve and sacral plexus, L3-S2.

****END OF TRANSCRIPTION****

 

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