Research Article

Pathological Tendon Histology in Early and Chronic Human Patellar Tendinopathy

Table 1

Subject characteristics. Activity-pre: total weekly training time consumption, excluding nonweight-bearing activities, before injury in symptomatic study participants. Activity-current: current total weekly training time consumption, excluding nonweight-bearing activities. VISA-P: Victorian Institute of Sports Assessment-patellar questionnaire (score [0–100], 0 = lowest functional capacity; 100 = highest functional capacity). NRS: the numerical ranking scale during patellar loading activities (score [0–10], 0 = no pain; 10 = worst imaginable pain). Data are presented as mean (range). Healthy controls (CTRL), Early tendinopathy (ET), Chronic tendinopathy (CT).

CTRLETCT

Age (years)23.7 (21–28)29.5 (29–30)30.7 (26–39)
Sex (m/f)2/10/22/1
Weight (kg)76.4 (70.8–82.1)66.8 (64.2–69.4)78.4 (72.3–84.4)
Height (cm)172.4 (167.8–179.0)166.8 (158.5–175.0)178.5 (174.9–182)
Activity-pre (hrs/week)6.5 (5–8)7.7 (2–14)
Activity-current (hrs/week)6.7 (3–12)4.5 (3–6)4.7 (2–9)
VISA-P73.5 (72–75)38.3 (30–54)
NRS3.5 (3–4)6.3 (4–9)
NRS-SLDS2.5 (1–4)5 (5–5)