What nerve is affected in pronator teres syndrome?

What nerve is affected in pronator teres syndrome?

• A. Ulnar Nerve
• B. Median Nerve
• C. Radial Nerve
• D. Axillary Nerve

Answer: (B)

Pronator teres syndrome primarily affects the median nerve. This condition arises when the median nerve is compressed as it travels between the two heads of the pronator teres muscle, which is located in the forearm. The resultant compression can lead to symptoms such as pain and sensory deficits along the distribution of the median nerve, particularly in the hand and fingers. Understanding the anatomy and mechanics of the pronator teres muscle is crucial here. The median nerve innervates several muscles in the forearm, and when it gets entrapped due to tightness or hypertrophy of the pronator teres, it can result in functional impairments like difficulty in pronation and motor weakness. Recognizing this specific nerve involvement is key for clinicians to accurately diagnose and manage the condition, often leading to interventions such as physical therapy targeting muscle relaxation or surgical release in more severe cases. Additionally, the other nerves listed—ulnar, radial, and axillary—do not play a significant role in this particular condition.

Pronator teres syndrome primarily affects the median nerve. This condition arises when the median nerve is compressed as it travels between the two heads of the pronator teres muscle, which is located in the forearm. The resultant compression can lead to symptoms such as pain and sensory deficits along the distribution of the median nerve, particularly in the hand and fingers.

Understanding the anatomy and mechanics of the pronator teres muscle is crucial here. The median nerve innervates several muscles in the forearm, and when it gets entrapped due to tightness or hypertrophy of the pronator teres, it can result in functional impairments like difficulty in pronation and motor weakness.

Recognizing this specific nerve involvement is key for clinicians to accurately diagnose and manage the condition, often leading to interventions such as physical therapy targeting muscle relaxation or surgical release in more severe cases. Additionally, the other nerves listed—ulnar, radial, and axillary—do not play a significant role in this particular condition.