Inclusion and exclusion criteria
primary hip arthroplasty, allergic, dementia, Alzheimer’s disease, infection, fractures, neurological diseases, coagulation abnormalities
INFECTION, NEUROLOGICAL DISEASE
Inclusion criteria: patients over 65 years of age about to undergo primary hip arthroplasty under spinal anesthesia.Exclusion criteria: patients unable to walk independently before the injury; patients with fractures in other parts; patients with neurological diseases (for example, Alzheimer’s disease or dementia); patients with contraindications to regional anesthesia (for example, local infection, coagulation abnormalities, or patient refusal); patients allergic to study medications.