In a study on 27 patients undergoing surgical excision for Type A ulnar polydactyly, only one complication was noted in the form of an infection
However, no investigators have objectively reviewed functional range of motion or articular stability. Type B ulnar polydactyly
In a study on 21 patients with Type B ulnar polydactyly treated with suture ligation it was found that the duplicated digit was typically amputated at an average of 10 days and no complications of infection or bleeding were reported. In a large study on 105 patients treated with suture ligation an overall complication rate of 23.5% was reported, citing a residual tender or unacceptable bump in 16%, infection in 6%, and bleeding in 1% of patients. In general, suture ligation is safe and effective when applied to appropriate cases of Type B polydactyly in which no substantial ligamentous or osseous structures are present within the pedicle. Parents should be educated as to the progression of necrosis, and that revision of residual tissue or scar may be necessary when the child is six months of age or older. Radial polydactyly
Bilhaut procedure
Advantages:
By combining two hypoplastic thumbs a sufficient thumb size is acquired. Furthermore, the IP and MCP joints are very stable as the collateral ligaments are not violated during reconstruction. Disadvantages:
Violation during reconstruction can lead to growth arrest or asymmetric growth. Nail deformity could also occur after reconstruction. Although the joints are stable, restriction of flexion may be possible. The average IP flexion in a reconstructed thumb is 55 degrees less than the contralateral thumb.
Intractable may refer to:

Intractable conflict, a form of complex, severe, and enduring conflict
Intractable pain, pain which cannot be controlled/cured by any known treatment
Intractability (complexity), in computational complexity theory