Isolated Compound Dislocation of the Pisiform Bone with Associated Neurovascular Injury Following an Assault: A Rare...

Area of Science:

• Orthopedic Surgery
• Traumatology
• Hand Surgery

Background:

• Isolated pisiform dislocation is a rare carpal bone injury.
• Management strategies, including conservative treatment and pisiform excision, lack consensus.
• Commonly results from forceful flexor carpi ulnaris (FCU) tendon avulsion or wrist hyperextension.

Observation:

• A unique case of isolated pisiform fracture dislocation resulted from a sharp object assault.
• Associated injury to the ulnar neurovascular bundle within Guyon's canal was identified.
• The pisiform bone was stabilized using K-wire fixation.

Findings:

• Surgical fixation of the fractured pisiform bone was performed.
• Repair of the compromised ulnar neurovascular structures was successfully achieved.
• Good functional recovery was observed post-operatively.

Implications:

• This case highlights the importance of surgical intervention in complex pisiform injuries.
• Prompt diagnosis and management of associated neurovascular compromise are crucial.
• Surgical fixation may offer superior functional outcomes compared to non-operative treatments for certain pisiform fracture dislocations.