. Author manuscript; available in PMC: 2022 Nov 1.

Published in final edited form as: Phys Sportsmed. 2020 Nov 26;49(4):410–419. doi: 10.1080/00913847.2020.1847004

Table 3b.

Patellar tendon: Analysis of type of ultrasonographic abnormality in the patellar tendon and development of pain at any time point (N = 104 runners, 208 tendons total).

		Pain, f (%)

Type of ultrasound abnormality		Yes	No	Fisher’s exact p	Relative risk (95% CI)
Hypoechogenicity	Abnormal	5 (33.3)	10 (66.7)	0.142	2.14 (0.98, 4.71)
Hypoechogenicity	Normal	30 (15.5)	163 (84.5)
Delamination	Abnormal	8 (53.3)	7 (46.7)	0.001^*	3.81 (2.12, 6.87)
Delamination	Normal	27 (14.0)	166 (86.0)
Paratenon Blurring	Abnormal	3 (60.0)	2 (40.0)	0.035^*	3.81 (1.74, 8.33)
Paratenon Blurring	Normal	32 (15.8)	171 (84.2)
Thickening	Abnormal	1 (14.3)	6 (85.7)	0.999	0.84 (0.13, 5.32)
Thickening	Normal	34 (16.9)	167 (83.1)
Calcification	Abnormal	8 (40.0)	12 (60.0)	0.008^*	2.79 (1.47, 5.28)
Calcification	Normal	27 (14.4)	161 (85.6)

CI = confidence interval.

Significant association.