Whats the mechanism of finger snapping?

You are assigned to care for david ramsey, a 22-year old male patient with back injury secondary to being thrown from a motorcycle. did nt damage the spinal, but the computed tomography revealed a compression fracture at l-2. david complains of severe back pain with numbness and tingling in the lower extremities. what assessments are indicated based on this nursing diagnosis? list other major nursing diagnoses based on david’s clinical presentation?