Rationale: Lunate fractures are very rare, accounting for only 0.5% to 6.5% of all carpal fractures. They are mostly caused by high-energy trauma and commonly occur with fractures and dislocations of other carpal bones. It is rarely combined with Colles' fracture and the underlying pathogenesis and prognostic significance still remain controversial.
Patient concerns: Here we report a case of a fresh lunate fracture combined with Colles' fracture, without dislocations of other carpal bones caused by a low-energy fall injury.
Diagnoses: Lunate fracture, Colles' fracture.
Interventions: This patient received closed reduction and internal fixation (CRIF) with K-wire.
Outcomes: The patient took follow up 1 year and the patient showed good function of the wrist joint LESSONS:: Lunate fractures have no high misdiagnosis rate. Patients suffering persistent wrist swelling after a trauma should be carefully examined and followed up to prevent severe secondary diseases and wrist joint dysfunction.