Knee Surgery during the COVID-19 Lockdown—Experiences of a Level-One Trauma Center in Germany

Table 2

General data (Jan: January; Feb: February).

General data	Jan; 2017-2019; Mean (SD)	Jan 2020	Feb; 2017-2019; Mean (SD)	Feb 2020	March; 2017-2019; Mean (SD)	March 2020	April; 2017-2019; Mean (SD)	April 2020	May; 2017-2019; Mean (SD)	May 2020
Number of patients	13.7 (2.9)	11	20.3 (3.2)	21	17.0 (7.2)	12	17.3 (5.7)	4	15.7 (7.2)	15
Sex
Male	9.7 (3.1)	7	15.3 (1.5)	11	12.7 (7.4)	6	14.3 (5.7)	2	11.0 (1.7)	8
Female	4.0 (1.0)	4	5.0 (2.0)	10	4.3 (0.6)	6	3.0 (0.0)	2	4.7 (5.5)	7
Age	41.2 (7.1)	48.4 (18.2)	45.2 (3.5)	46.7 (21.3)	46.6 (0.8)	47.0 (17.7)	41.4 (1.9)	45.6 (5.2)	45.1 (4.2)	43.4 (23.4)
Insurance situation
Occupational	5.7 (0.6)	3	9.7 (3.1)	5	4.7 (3.2)	3	4.7 (2.3)	1	2.7 (1.5)	7
Normal	7.7 (3.8)	8	10.7 (5.1)	16	12.3 (4.9)	9	12.7 (3.5)	3	13.0 (7.2)	8
Urgency
Acute	3.3 (2.3)	3	7.7 (1.2)	7	6.7 (4.0)	6	7.0 (3.5)	3	5.7 (3.2)	8
Elective	10.3 (0.6)	8	12.7 (2.1)	14	10.3 (4.7)	6	10.3 (5.9)	1	10.0 (6.0)	7
Known COVID-19 positive patients	0	0	0	0	0	1	0	0	0	0