Trigger finger occurs in -a) Rheumatoid athritisb) Traumac) Osteosarcomad) Osteoarthritis
ac
ab
ad
bc
More common in people with certain medical problems, e.g. Diabetes, Rheumatoid arthritis, Gout, renal disease, Collagen vascular diseases, Dupuytren's disease.
Local trauma is a risk factor
Activities with power grip causes shearing edges of the Al pulley (Pulley of flexor tendon at metacarpophalangeal joint)
Recent surgery