Peripheral Nerve Injuries · NEET PG Preparation Orthopaedics
According to the Seddon classification of peripheral nerve injuries, which type involves complete disruption of the axon while preserving the endoneu…
Practice question from Peripheral Nerve Injuries (NEET PG Preparation Orthopaedics), with the correct answer and a step-by-step solution.
medium · MCQ · Q-1F68C6
According to the Seddon classification of peripheral nerve injuries, which type involves complete disruption of the axon while preserving the endoneurial tubes, resulting in Wallerian degeneration but a high likelihood of complete functional recovery through axonal regeneration?
- A.Neurapraxia
- B.AxonotmesisCorrect answer
- C.Neurotmesis
- D.Intermitmesis
Solution
Axonotmesis involves axonal disruption with intact connective tissue frameworks (endoneurium, perineurium, and epineurium). Because the endoneurial tubes remain continuous, regenerating axons follow their original path to the target organs, yielding good functional recovery. Neurapraxia is a transient conduction block without structural axonal damage, whereas neurotmesis is complete transection of the nerve.
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