The steroids are useful if a tender nodule or inflammation around the tendons is present - in which case they have been shown to reduce the number of patients who will end up requiring surgery (
study here). Collagenase, the enzyme you mention, is another first-line treatment for mild disease (≤ 30 degrees of contracture at the first knuckles only) with good clinical outcomes observed in
this large study. In addition to these treatment options for mild disease, there is also needle aponeurotomy and percutaneous fasciotomy (the surgery you mentioned) that are associated with ~60% recurrence and ~40% recurrence, respectively. I recommend letting your doctor know what is bothering you and having a discussion with him/her.
... said no doctor ever!
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