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26.10.2016 | Original Article • WRIST - SCAPHOID | Ausgabe 1/2017

European Journal of Orthopaedic Surgery & Traumatology 1/2017

Management of scaphoid nonunions with vascularized bone grafts from the distal radius: mid- to long-term follow-up

Zeitschrift:
European Journal of Orthopaedic Surgery & Traumatology > Ausgabe 1/2017
Autoren:
Konstantinos N. Malizos, Zoe Dailiana, Sokratis Varitimidis, Antonios Koutalos

Abstract

Scaphoid nonunion represents a challenging problem that leads to disability if neglected. Vascularized bone grafts are proposed to augment the local biology and increase the likelihood of union but long-term outcomes are sparse. In this work, we present the mid- to long-term outcome of 140 scaphoid nonunions managed with vascularized bone grafts from the distal radius. Sixteen patients underwent concomitant closed wedge osteotomy of the distal radius because of arthritic changes. There were 130 males and ten females, with mean time from injury to surgery 3.3 years. Delayed presentation was associated with arthritic changes. Forty-two patients had avascular necrosis of the proximal pole and sixteen had more severe arthritic changes. The mean follow-up was 10 years. Pain decreased postoperatively but range of motion did not improve but only in early reconstructions. Grip strength reached 79% of the non-injured hand. Mayo modified wrist score improved from 56 to 84 (p < 0.001). Except one, all the rest 139 nonunions healed in a mean time of 9 weeks. MRI evaluation in 77 patients revealed healing at a mean of 3 months postoperatively even in cases of avascular necrosis. Scaphoid length, carpal height, and scapholunate angle increased, but capitolunate did not change significantly. The presence of arthritis preoperatively was associated with progression of arthritic changes after 10 years. Treatment of scaphoid nonunions with vascularized bone grafts from distal radius reliably led to highest rate of bone healing with good mid- to long-term outcomes. Enhancement of the local biology and reconstitution of scaphoid and carpal height resulted in improved function mostly in early interventions.

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