Final answer:
Hook of hamate fractures are treated with immobilization or surgery depending on whether they are acute or chronic. Acute fractures may initially require a cast, while chronic cases often necessitate surgical intervention.
Step-by-step explanation:
The treatment of a hook of hamate fracture varies based on whether the condition is acute or chronic. In acute cases, treatment usually involves immobilization with a cast or splint, followed by physical therapy to regain motion and strength. If the fragment is displaced or there are associated injuries, an open reduction and internal fixation (ORIF) surgical procedure may be necessary. For chronic cases, where nonunion or persistent pain is present, surgical excision of the fracture fragment can be the preferred treatment. Postoperative care typically includes immobilization and a structured rehabilitation program.