Abstract
Objective The aim of the present study was to analyze the clinical and radiological results
of patients with type-V cystic scaphoid nonunion who were treated with percutaneous
grafting and screw.
Methods A total of 11 patients were treated with a percutaneous bone graft with screw fixation.
The criteria for inclusion in the study were a type-V scaphoid nonunion and age >
18 years old. Those with humpback deformity, arthritis, ligament damage determined
on magnetic resonance imaging, or avascular necrosis (AVN) in the nonunion fragment
were excluded from the study.
Results The mean follow-up time was 36 months (range: 15–53 months). At the final follow-up
examination, the mean visual analogue scale score was 1.06 (range: 0–2.3). Postoperatively,
the mean extension was 61.6° (44–80°), flexion 66° (60–80°), radial deviation 12°
(7–20°), and ulnar deviation 25° (20–34°). The mean grip strength of the operated
hand was found to be 94%, compared with the healthy side. The results obtained in
the Mayo Modified Wrist Score were poor in 2 patients, good in 2 and excellent in
7 (64%). With the exception of 2 patients, union was obtained radiologically in 9
patients, with a mean of 12.6 weeks (range, 8–16 weeks).
Conclusion Percutaneous grafting and screw fixation cannot replace open surgery in cases with
deformity, shortening, humpbacking, or in long term nonunions; however, it is a reliable
and effective treatment method in selected cases, such as Slade & Dodds type-V cystic
nonunion.
Keywords
scaphoid bone - fracture fixation, internal - bone grafting - bone screws
