Muscle Test - Lower Extremity

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| By Kolsyn
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  • 1/11 Questions

    Extensor Digitorum L&B Innervation

    • L4 Femoral n.
    • L5 Superior Gluteal n.
    • L5 Deep peroneal n.
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About This Quiz

This quiz assesses knowledge and skills related to muscle function tests of the lower extremity. It covers innervation and practical muscle tests for the Tibialis Anterior, Gastroc\/Soleus Complex, and Extensor Hallucis Longus, essential for learners in physical therapy and related fields.

Muscle Test - Lower Extremity - Quiz

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  • 2. 

    Peroneus L&B - Innervation

    • L5 deep peroneal n.

    • S1 superficial peroneal n.

    • L5 superior gluteal n.

    Correct Answer
    A. S1 superficial peroneal n.
    Explanation
    The correct answer is S1 superficial peroneal n. This is because the superficial peroneal nerve is responsible for innervating the lateral compartment of the leg, which includes the peroneus longus and brevis muscles. The L5 deep peroneal nerve innervates the anterior compartment of the leg, while the L5 superior gluteal nerve innervates the gluteus medius and minimus muscles. Therefore, the superficial peroneal nerve is the most appropriate answer in terms of innervation.

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  • 3. 

    Tibialis Anterior Muscle Test

    • Position foot down and in, PT holds. Dr. presses up and out

    • Position foot up and in. PT. holds. Dr. presses down and out

    • Knee extended. Pt. flexes foot. Dr. tries dorsiflexion of the foot.

    Correct Answer
    A. Position foot up and in. PT. holds. Dr. presses down and out
    Explanation
    This answer is correct because the tibialis anterior muscle is responsible for dorsiflexion of the foot and inversion of the foot. In this test, the patient's foot is positioned in dorsiflexion and inversion, and the physical therapist holds it in that position. The doctor then applies pressure to the foot, pressing it down and out, which tests the strength of the tibialis anterior muscle.

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  • 4. 

    Gastroc/Soleus Complex Muscle Test

    • Knee extended. Pt. plantar flexes foot. Dr. tries to dorsiflex foot.

    • Toes ext'd Pt holds. Dr. stabilizes heel & tries to flex great toe (2 finger contact across both joints)

    • Position foot up & in. Pt. holds. Dr. presses down and &out

    Correct Answer
    A. Knee extended. Pt. plantar flexes foot. Dr. tries to dorsiflex foot.
    Explanation
    This test is assessing the strength and function of the Gastroc/Soleus complex muscle. The patient is instructed to extend their knee and then plantar flex their foot, while the doctor attempts to dorsiflex the foot. This test helps to evaluate the strength and range of motion of the Gastroc/Soleus complex muscle.

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  • 5. 

    Extensor Hallucis L Muscle Test

    • Position foot up & in. Pt. holds - dr. presses down & out

    • Knee extended, Pt. plantar flexes, Dr. tried to dorsiflex the foot

    • PT. supine. Toes ext'd Pt holds, dr. stabilizes heel & tries to flex the 1st met (2 finger contact across both joints)

    Correct Answer
    A. PT. supine. Toes ext'd Pt holds, dr. stabilizes heel & tries to flex the 1st met (2 finger contact across both joints)
    Explanation
    The correct answer is PT. supine. Toes ext'd Pt holds, dr. stabilizes heel & tries to flex the 1st met (2 finger contact across both joints). In this position, the patient is lying on their back with their toes extended. The patient holds their toes in this extended position while the doctor stabilizes the heel and tries to flex the first metatarsophalangeal joint. This test is used to assess the strength and function of the extensor hallucis longus muscle, which is responsible for extending the big toe.

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  • 6. 

    Extensor Halluscis L Innervation

    • L4 Deep Peroneal n.

    • S1 Tibial n.

    • L5 deep peroneal n.

    Correct Answer
    A. L5 deep peroneal n.
    Explanation
    The correct answer is L5 deep peroneal n. The extensor hallucis longus muscle is innervated by the deep peroneal nerve, which arises from the L5 spinal level. This nerve supplies motor innervation to the muscles in the anterior compartment of the leg, including the extensor hallucis longus. Therefore, the L5 deep peroneal nerve is responsible for innervating the extensor hallucis longus muscle.

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  • 7. 

    Extensor Digitorum L&B Muscle Test

    • Pt. supine toes ext'd Pt holds. dr. stabilizes heel & tries to flex toes (2 finger contact across both joints) Palpate the tendon

    • Position foot down & out - Pt. holds (plantar flexion and eversion) Dr. presses up & in

    • Position foot up and out (dorsiflexion of ankle with eversion of foot) dr. presses down & in

    Correct Answer
    A. Pt. supine toes ext'd Pt holds. dr. stabilizes heel & tries to flex toes (2 finger contact across both joints) Palpate the tendon
    Explanation
    The correct answer is to palpate the tendon while the patient is supine and extends their toes, while the doctor stabilizes the heel and tries to flex the toes with two finger contacts across both joints. This test is used to assess the strength and integrity of the extensor digitorum longus and brevis muscles, which are responsible for extending the toes. By palpating the tendon, the doctor can feel for any abnormalities or weaknesses in the muscle.

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  • 8. 

    Peroneus Tertius - Muscle Test

    • Position foot up & out (dorsiflexion of ankle w/eversion of foot) dr. presses down and in

    • Pt. supine. Toes ext'd Pt. holds. Dr. Stabilizes heel & tries to flex toes - 2 finger contact across both joints. Test toes together or individually

    • Position foot down & out - Pt. holds (plantar flexion & eversion). Dr. presses up and in

    Correct Answer
    A. Position foot up & out (dorsiflexion of ankle w/eversion of foot) dr. presses down and in
    Explanation
    The correct answer is the specific position in which the foot is positioned up and out (dorsiflexion of ankle with eversion of the foot) and the doctor presses down and in. This position and movement are used to test the strength and function of the peroneus tertius muscle.

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  • 9. 

    Tibialis Anterior Innervation

    • S1 Tibial n.

    • L5 Deep peroneal n.

    • L4 Deep peroneal n.

    • L5 Superior Gluteal n.

    Correct Answer
    A. L4 Deep peroneal n.
    Explanation
    The correct answer is L4 Deep peroneal n. The tibialis anterior muscle is innervated by the deep peroneal nerve, which arises from the L4 nerve root. The S1 nerve root innervates the tibial nerve, not the deep peroneal nerve. The L5 nerve root also innervates the deep peroneal nerve, but it is not the primary innervation for the tibialis anterior muscle. The superior gluteal nerve does not innervate the tibialis anterior muscle. Therefore, the correct answer is L4 Deep peroneal n.

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  • 10. 

    Peroneus Teritus - Innervation

    • S1 Superficial Peroneal

    • L5 - Deep Peroneal n.

    • S1 - Tibial n.

    Correct Answer
    A. L5 - Deep Peroneal n.
    Explanation
    The correct answer is L5 - Deep Peroneal n. The peroneus tertius muscle is innervated by the deep peroneal nerve, which arises from the L5 nerve root. The superficial peroneal nerve and the tibial nerve, which arise from the S1 nerve root, do not innervate the peroneus tertius muscle.

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  • 11. 

    Gastroc/Soleus Complex Innervation

    • L4 Deep Peroneal n.

    • Tibial nerve

    • S1 Tibial n.

    • L5 Deep peroneal n.

    Correct Answer
    A. S1 Tibial n.
    Explanation
    The correct answer is S1 Tibial n. The Gastroc/Soleus Complex is innervated by the Tibial nerve, which is derived from the S1 spinal nerve. The L4 and L5 spinal nerves innervate the Deep Peroneal nerve, not the Gastroc/Soleus Complex. Therefore, the correct answer is S1 Tibial n.

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  • Current Version
  • Mar 11, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 30, 2011
    Quiz Created by
    Kolsyn
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