This likely represents an increased creep phenomenon. In this series, four patients received total knee arthroplasties and have gone on to become chronic dislocaters. Reconstructive procedures have usually not been effective. One patient had nine procedures on two knees and still required bracing. Fusions of joints, particularly in the hand, have provided good stability and pain relief.
Complications are higher with respect to wound healing, though.
The mainstay of orthopaedic care is bracing and adaptive modification. I've shown a lot of numbers today, and I'm not sure that even now you can't differentiate one type from another. Even geneticists admit that typing is difficult. Referral to a geneticist for attempted typing as well as counseling is needed. Conservative treatment with bracing and activity modification is strongly urged.