Simultaneous Bilateral Total Knee Arthroplasty in Elderly: Are There Factors that Can Influence Safety and Clinical Outcome?

Table 1

Patients’ data.

Age	75.05 ± 3,83 (range 70–83)
Type of implant	50 CR (90.9%)
	1 PS (1.8%)
	4 mixed PS - CR (7.2%)
Sex	Male 20 (36.3%)
	Female 35 (63.6%)
BMI	Underweight (<18) 1 patient (1.8%)
	Normal (18.5–25) 21 patients (38.1%)
	Overweight (25–30) 20 patients (36.3%)
	Obese I (30–35) 11 patients (20%)
	Obese II (>35) 2 patients (3.6%)
ASA	I 4 patients (7.3%)
	II 41 patients (74.5%)
	III 10 patients (18.2%)
	IV No patients
Preoperative hemoglobin (mg/dL)	13.38 ± 1.32 (range 10.5–16.1)
Comorbidities	0 15 patients (30.9%)
	1 12 patients (21.8%)
	2 9 patients (16.3%)
	>3 17 patients (30.9%)

BMI: body mass index; ASA: American Score of Anesthesiologist.