Muscle Test - Lower Extremity | Attempts: 121

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| By Kolsyn

Kolsyn

Community Contributor

Quizzes Created: 2 | Total Attempts: 281

Questions: 11 | Attempts: 121 | Updated: Mar 11, 2024

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Tests innervation and Muscle Test Instructions

Questions and Answers

1.

Tibialis Anterior Innervation
- A.
  
  S1 Tibial n.
- B.
  
  L5 Deep peroneal n.
- C.
  
  L4 Deep peroneal n.
- D.
  
  L5 Superior Gluteal n.
Correct Answer
C. 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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2.

Tibialis Anterior Muscle Test
- A.
  
  Position foot down and in, PT holds. Dr. presses up and out
- B.
  
  Position foot up and in. PT. holds. Dr. presses down and out
- C.
  
  Knee extended. Pt. flexes foot. Dr. tries dorsiflexion of the foot.
Correct Answer
B. 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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3.

Gastroc/Soleus Complex Innervation
- A.
  
  L4 Deep Peroneal n.
- B.
  
  Tibial nerve
- C.
  
  S1 Tibial n.
- D.
  
  L5 Deep peroneal n.
Correct Answer
C. 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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4.

Gastroc/Soleus Complex Muscle Test
- A.
  
  Knee extended. Pt. plantar flexes foot. Dr. tries to dorsiflex foot.
- B.
  
  Toes ext'd Pt holds. Dr. stabilizes heel & tries to flex great toe (2 finger contact across both joints)
- C.
  
  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 Halluscis L Innervation
- A.
  
  L4 Deep Peroneal n.
- B.
  
  S1 Tibial n.
- C.
  
  L5 deep peroneal n.
Correct Answer
C. 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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6.

Extensor Hallucis L Muscle Test
- A.
  
  Position foot up & in. Pt. holds - dr. presses down & out
- B.
  
  Knee extended, Pt. plantar flexes, Dr. tried to dorsiflex the foot
- C.
  
  PT. supine. Toes ext'd Pt holds, dr. stabilizes heel & tries to flex the 1st met (2 finger contact across both joints)
Correct Answer
C. 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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7.

Extensor Digitorum L&B Innervation
- A.
  
  L4 Femoral n.
- B.
  
  L5 Superior Gluteal n.
- C.
  
  L5 Deep peroneal n.
Correct Answer
C. L5 Deep peroneal n.

Explanation
The correct answer is L5 Deep peroneal n. The extensor digitorum longus and brevis muscles are innervated by the deep peroneal nerve, which arises from the L5 nerve root. This nerve provides motor innervation to the muscles in the anterior compartment of the leg, including the extensor digitorum muscles. Therefore, the L5 deep peroneal nerve is responsible for innervating the extensor digitorum longus and brevis muscles.

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8.

Extensor Digitorum L&B Muscle Test
- A.
  
  Pt. supine toes ext'd Pt holds. dr. stabilizes heel & tries to flex toes (2 finger contact across both joints) Palpate the tendon
- B.
  
  Position foot down & out - Pt. holds (plantar flexion and eversion) Dr. presses up & in
- C.
  
  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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9.

Peroneus L&B - Innervation
- A.
  
  L5 deep peroneal n.
- B.
  
  S1 superficial peroneal n.
- C.
  
  L5 superior gluteal n.
Correct Answer
B. 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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10.

Peroneus Teritus - Innervation
- A.
  
  S1 Superficial Peroneal
- B.
  
  L5 - Deep Peroneal n.
- C.
  
  S1 - Tibial n.
Correct Answer
B. 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.

Peroneus Tertius - Muscle Test
- A.
  
  Position foot up & out (dorsiflexion of ankle w/eversion of foot) dr. presses down and in
- B.
  
  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
- C.
  
  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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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

Current Version
Mar 11, 2024

Quiz Edited by
ProProfs Editorial Team
Jan 30, 2011

Quiz Created by
Kolsyn

Muscle Test - Lower Extremity

Tibialis Anterior Innervation

Tibialis Anterior Muscle Test

Gastroc/Soleus Complex Innervation

Gastroc/Soleus Complex Muscle Test

Extensor Halluscis L Innervation

Extensor Hallucis L Muscle Test

Extensor Digitorum L&B Innervation

Extensor Digitorum L&B Muscle Test

Peroneus L&B - Innervation

Peroneus Teritus - Innervation

Peroneus Tertius - Muscle Test