Here I was, all excited about having a useful little finger last year after being treated with Xiaflex. Then, about 9 months later I started noticing that little finger assuming an unusual "ski jump slope" shape, with the pre-knuckle area somewhat normal compared to the adjoining fingers, but at the first joint halfway up the finger and forward to the nail, the shape takes a dramatic slope downward, then dramatically up again just before the nail. I've researched this condition ("Boutonniere Deformity") and apparently it's due to trauma and not a heredity-based, age-related or necessarily associated with DD. I know that I've had no "trauma" (i.e. slamming my finger into something, or having been hit, etc) to that finger and the only inordinate contact has been with my hand surgeon who treated it with Xiaflex. I am wondering if any of you DD patients out there have developed this deformity as well, or if I should possibly investigate this as some sort of malpractice by the doctor in connection with the treatment I received for Dupuytrens. See pic attached.

Edited 07/02/19 22:16

I would suspect the collagenase. It pops up in medical reports although is not a listed side effect. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4778900/. But 9 months later is a bit of a stretch to link the two. Some Drs are using collagenase, off label, to treat a boutonnière but as Brian says I think a splint is more conventional as first pass conservative treatment, before surgery.

After NA, I continued to splint as advised nightly for several years followed by a gradual tapering off. For me, the splint kept recurrence away and actually somehow contributed to further straightening over time.