Table 1.

Global IKDC, KOOS and EQ VAS scores at basal (PRE), 2-month (2 MO) and 6-month (6 MO) evaluations after HPRP treatment. Statistically significant differences (p < 0.05 for one-tailed tests) from basal evaluation to the 2- and 6-month follow-up visits and from the 2- to 6-month follow-up visits was assessed using the Student’s t-test.

		HPRP M ± SD [95% CI]		t value	p value
IKDC	PRE	37.9 ± 12.2 [34.80–40.97]	PRE versus 2 MO	17.52	< 0.0005
	2 MO	65.9 ± 16.5 [61.70–70.06]	PRE versus 6 MO	6.86	< 0.0005
	6 MO	62.6 ± 16.9 [58.47–67.05]	2 MO versus 6 MO	7.95	< 0.0005
KOOS	PRE	46.1 ± 11.8 [43.09–49.07]	PRE versus 2 MO	17.49	< 0.0005
	2 MO	74.0 ± 15.0 [70.22–77.82]	PRE versus 6 MO	14.90	< 0.0005
	6 MO	70.9 ± 15.3 [67.02–74.77]	2 MO versus 6 MO	7.45	< 0.0005
EQ VAS	PRE	75.5 ± 11.4 [72.0–77.7]	PRE versus 2 MO	16.75	< 0.0005
	2 MO	38.6 ± 18.1 [33.3–42.3]	PRE versus 6 MO	13.40	< 0.0005
	6 MO	43.2 ± 19.5 [38.6–48.1]	2 MO versus 6 MO	7.97	< 0.0005

M, mean; SD, standard deviation; CI, confidence interval; IKDC, International Knee Documentation Committee; KOOS, Knee injury and Osteoarthritis Outcome Score; EQ VAS, Equal Visual Analogue Scale.