A 7-Year-Old Boy Is Brought to the Emergency Department After

question 253

Multiple Choice

A 7-year-old boy is brought to the emergency department after injuring his right knee in a bicycle accident.  Physical examination shows a swollen right knee with abrasion of the overlying skin.  Distal motor and sensory innervation are intact, and popliteal and pedal pulses are normal.  No other significant trauma is noted.  X-ray reveals a nondisplaced patellar fracture.  The patient is referred to orthopedics and placed in a leg cylinder cast.  On follow-up a week after cast placement, he has paresthesia and numbness of the dorsum of the right foot along with weakness in foot dorsiflexion and eversion.  Which of the following is the most likely site of nerve compression in this patient?

• A)Anterior compartment of the leg
• B)Fibular neck
• C)Lateral compartment of the leg
• D)Medial malleolus
• E)Popliteal fossa

---

Definitions:

Cold Temperature

A condition of the environment in which the thermal reading is low, often resulting in a sensation of being cold and requiring organisms to adapt or seek warmth.

Special Sense

A perception such as sight, hearing, smell, taste, or balance requiring specialized organs.

Unencapsulated Receptors

Sensory receptors not surrounded by connective tissue capsules, detecting changes in their environment.

Meissner's Corpuscles

Sensitive mechanoreceptors located in the papillary layer of the dermis, particularly in areas like the fingertips and lips, responsible for sensitivity to light touch.