Podcast
Questions and Answers
Damage to the superficial peroneal nerve would most significantly impair which action?
Damage to the superficial peroneal nerve would most significantly impair which action?
- Inversion of the foot.
- Dorsiflexion of the foot.
- Plantarflexion of the foot.
- Eversion of the foot. (correct)
A patient reports numbness on the dorsum of their foot, excluding the area between the first and second toes. Which nerve is most likely affected?
A patient reports numbness on the dorsum of their foot, excluding the area between the first and second toes. Which nerve is most likely affected?
- Sural nerve.
- Deep peroneal nerve.
- Tibial nerve.
- Superficial peroneal nerve. (correct)
The superficial peroneal nerve originates from which major nerve in the thigh?
The superficial peroneal nerve originates from which major nerve in the thigh?
- Saphenous nerve.
- Sciatic nerve. (correct)
- Obturator nerve.
- Femoral nerve.
Which of the following conditions is least likely to directly compress or injure the superficial peroneal nerve?
Which of the following conditions is least likely to directly compress or injure the superficial peroneal nerve?
Why does injury to the superficial peroneal nerve not typically result in foot drop?
Why does injury to the superficial peroneal nerve not typically result in foot drop?
A patient is diagnosed with superficial peroneal nerve entrapment. Where is the most likely location of the nerve compression?
A patient is diagnosed with superficial peroneal nerve entrapment. Where is the most likely location of the nerve compression?
Which cutaneous nerve provides sensation to the lateral aspect of the foot?
Which cutaneous nerve provides sensation to the lateral aspect of the foot?
Following a traumatic injury to the lower leg, a patient exhibits weakness in foot eversion and altered sensation on the dorsum of the foot but maintains the ability to dorsiflex the foot. Which nerve is most likely injured?
Following a traumatic injury to the lower leg, a patient exhibits weakness in foot eversion and altered sensation on the dorsum of the foot but maintains the ability to dorsiflex the foot. Which nerve is most likely injured?
Flashcards
Superficial Peroneal Nerve
Superficial Peroneal Nerve
A nerve in the lower leg that controls foot movement and sensation on part of the leg and foot.
Origin of Superficial Peroneal Nerve
Origin of Superficial Peroneal Nerve
From the common peroneal nerve (branch of sciatic nerve in thigh).
Path of Superficial Peroneal Nerve
Path of Superficial Peroneal Nerve
Travels down outer lower leg between fibularis longus and brevis muscles, emerging superficially to innervate the top of the foot.
Motor Function
Motor Function
Signup and view all the flashcards
Muscles Controlled
Muscles Controlled
Signup and view all the flashcards
Sensory Function
Sensory Function
Signup and view all the flashcards
Symptoms of Injury:
Symptoms of Injury:
Signup and view all the flashcards
Common Injuries
Common Injuries
Signup and view all the flashcards
Study Notes
- The superficial peroneal nerve is located in the lower leg.
- It controls certain foot movements.
- It provides sensation to part of the lower leg and foot.
Location and Path
- Originates from the common peroneal nerve, a branch of the sciatic nerve in the thigh.
- Travels down the outer side of the lower leg.
- Passes between the fibularis longus and fibularis brevis muscles.
- Becomes a surface nerve (closer to the skin) as it moves lower in the leg.
- Spreads out over the top of the foot, dividing into branches.
- These branches enable the sensation of touch on most of the top of the foot and toes.
Function
- The nerve has both motor and sensory functions.
- It controls the fibularis longus and fibularis brevis muscles.
- These muscles facilitate foot eversion (turning outward).
- These muscles also contribute to balance during walking or standing.
- Sensation (Feeling in the Skin) – enables feeling to most of the top of your foot and part of your lower leg
- It does not provide feeling to the space between your big toe and second toe.
- The sural nerve serves the outermost side of your foot.
Clinical Relevance
- It runs close to the surface, making it vulnerable to injuries.
- Injuries can result from ankle sprains, tight shoes/boots, or fractures.
- Injury Symptoms: numbness or tingling on the top of the foot and weakness in turning your foot outward
- Foot drop does not occur because this nerve doesn’t control lifting your foot.
- Nerve compression may heal with rest and avoiding pressure.
- Severe injuries may require physical therapy or surgery.
Summary
- Controls some foot movements and provides sensation to the top of your foot.
- Facilitates foot eversion.
- An injury can cause numbness on the top of the foot and weak foot eversion.
- Common injuries stem from ankle sprains, tight shoes, or leg fractures.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore the anatomy and function of the superficial peroneal nerve in the lower leg. Learn about its origin, path, motor control of foot eversion, and sensory function in the foot and lower leg.
