Table1.

Stratification of THA complications

Grade	Definition
Grade 1	Complication requires no treatment and has no clinical relevance; no deviation from routine followup; allowed therapeutic regimens include: antiemetics, antipyretics, analgesics, diuretics, electrolytes, antibiotics (no treatment)
Grade 2	Complication requires slight change in care with low intensity outpatient treatment (nonoperative treatment)
Grade 3	Complication requires unplanned surgical treatment, prolonged hospital admission, or readmission (operative treatment and/or admission)
Grade 4	Complication is associated with a limb-threatening or life-threatening event, which requires immediate invasive treatment
Grade 5	Death