First group: Healthy volunteers
finger tendinosis, Left handedness, rheumatic immunity, tendonitis, metabolic or endocrine diseases, gout, Trauma, diabetes
GROUP B, DISEASE, TENDONITIS, GIANT CELL TUMOR, TUBERCULOSIS, TENOSYNOVITIS, CARPAL TUNNEL SYNDROME, GOUT, DISEASES, DIABETES
Inclusion criteria: patients in the physical examination center of our hospital. Exclusion criteria: 1) Pregnancy or lactation; 2) Trauma history of FPL tendon; 3) History of tendon sheath diseases such as finger tendinosis, tendonitis, tenosynovitis, tendon sheath cyst, giant cell tumor of tendon sheath; 4) History of tuberculosis, skin, rheumatic immunity, metabolic or endocrine diseases, especially diabetes and gout;; 5) History of carpal tunnel syndrome; 6) Long-term use of steroids; 7) Workers or activists who need to repeatedly rub the FPL tendon sheath: such as carpenters, weightlifters, restaurant waiters, keyboard players, rock climbers or enthusiasts; 8) Left handedness; 9) Poor inspection compliance or tendon, tendon sheath or pulley disease found during the inspection. The following parameters were recorded during the evaluation: age, sex, C1 and C2 of both thumbs.271 healthy volunteers were recruited in four different age groups (0- 6 year, 7–17 year, 18- 40 year and ≥ 41 year). The thumb of each volunteer's left and right hand was measured by ultrasound (a total of 542 thumbs). All samples were collected from March 2016 to October 2019. (Table Clinical characteristics of healthy volunteers and patients with trigger thumbData are presented as mean (range) where applicableGroup1: 0 – 6 year, Group 2: 7–17 year, Group3:18- 40 year and Group4: ≥ 41 yearGroup A: 0- 6 year) and Group B: ≥ 41 year