Free vascularized bone graft from the medial femoral condyle has been described as
a superior method for treatment of recalcitrant scaphoid nonunion with proximal pole
avascularity and humpback deformity. Few complications and high union rates have been
reported. In a series of three patients we describe an undesired volar ossification
as a potential complication of the method. The risk of developing the ectopic bone
formation can be minimized if the surgeon is aware of the strong osteogenic capacity
of the periosteum. Meticulous dissection of the vascular bundle to the graft is mandatory
to avoid the complication. Caution is warranted so as not to leave a periosteal sleeve
under the vessels at the margin of the graft.
Keywords
ectopic bone formation - free vascularized bone graft - medial femoral condyle - ossification
- scaphoid nonunion
