Delayed Appearance of Neuropathy After Inferior Shoulder Dislocation

Area of Science:

• Orthopedic Surgery
• Neurology
• Trauma Research

Background:

• Inferior shoulder dislocation (ISD) complications typically include rotator cuff tears, nerve damage, and vascular issues.
• Existing literature primarily describes immediate neuropathic symptoms following ISD, often resolving post-reduction.

Observation:

• A 32-year-old male experienced an inferior shoulder dislocation requiring surgical repair.
• Initially, the patient had no neurological deficits at discharge and two-week follow-up.
• Delayed symptoms of numbness and tingling emerged at the six-week mark, confirmed as severe axillary nerve neuropathy via electromyography.

Findings:

• This case presents a delayed onset of axillary nerve neuropathy six weeks after an inferior shoulder dislocation.
• The observed delay challenges the conventional understanding of Wallerian degeneration as the sole mechanism for post-traumatic neuropathy.
• This report is the first to document delayed neuropathy appearance following an inferior shoulder dislocation.

Implications:

• Accurate documentation of symptom onset is crucial for understanding delayed neuropathic presentations after ISD.
• Further research into the pathophysiology of delayed neuropathy is warranted to refine treatment and prognostication.
• This case underscores the importance of vigilant neurological monitoring in patients with inferior shoulder dislocations beyond the immediate post-injury period.