Adjunctive platelet-rich plasma and hyaluronic acid injection after arthroscopic debridement in Kellgren-Lawrence grade 3 and 4 knee osteoarthritis

Table 1 Patient characteristics

Characteristic		Mean	Arthroscopic debridement	Arthroscopic debridement + HA	Arthroscopic debridement + PRP	P value
Patients		7	7	7	7	N/A
Age (yr)		59.29 ± 6.61	58.29 ± 6.75	57.29 ± 7.16	62.29 ± 5.71	0.34
Sex	Male	8 (38.1%)	3 (42.9%)	2 (28.6%)	3 (42.9%)	0.82
	Female	13 (61.9%)	4 (57.2%)	5 (71.4%)	4 (57.2%)
Affected knee	Right	14 (66.7%)	5 (71.4%)	6 (85.7%)	3 (42.9%)	0.22
	Left	7 (33.3%)	2 (28.6%)	1 (14.3%)	4 (57.2%)
KL grade	3	15 (71.4%)	7 (100%)	2 (28.6%)	6 (85.7%)	0.01
	4	6 (28.6%)	0	5 (71.4%)	1 (14.3%)
Meniscus tear	Yes	10 (47.6%)	2 (28.6%)	5 (71.4%)	3 (42.9%)	0.25
	No	11 (52.4%)	5 (71.4%)	2 (28.6%)	4 (57.1%)

Data are presented as n (%) or mean ± SD. HA: Hyaluronic acid; KL: Kellgren-Lawrence; N/A: Not applicable; PRP: Platelet-rich plasma.