Physical Therapy Assistant Practice Exam

What characterizes Morton's neuroma?

1. An inflammation of the ankle joint

2. A benign tumor affecting the first metatarsal

3. A benign neuroma affecting the third interdigital nerve

4. An injury to the Achilles tendon

The correct answer is: A benign neuroma affecting the third interdigital nerve

Morton's neuroma is characterized as a benign neuroma that primarily affects the third interdigital nerve, which is located between the third and fourth toes of the foot. This condition arises due to the thickening of the tissue surrounding the nerve, often resulting from compression or irritation. Patients typically experience symptoms such as pain, tingling, or a burning sensation in the affected area, which can often be exacerbated by wearing tight shoes or engaging in activities that put pressure on the forefoot. The choice that describes a benign tumor affecting the first metatarsal does not accurately represent Morton's neuroma, as it specifically involves the interdigital nerve rather than a tumor on the metatarsal itself. Additionally, an inflammation of the ankle joint and an injury to the Achilles tendon pertain to entirely different conditions unrelated to Morton's neuroma, which focuses on a specific nerve issue within the forefoot. The specificity of Morton's neuroma to the third interdigital nerve helps clarify the nature of the condition and emphasizes its distinct presentation in contrast to other foot-related ailments.