The aim of this retrospective study was to analyse the results obtained in 12 carpal scaphoid pseudarthroses that had benefited from a non-vascularised cortico-cancellous graft, in order to specify the factors influencing the results and to determine the ideal indications and limitations. Between 2015 and 2021, 12 patients received a non-vascularized cortico-cancellous graft. The average follow-up was 36 months. The average age was 31 years. For 5 patients, the fracture was not initially diagnosed and the average delay of diagnosis was 2 months. In the Schernberg classification, the fracture was located: 3 times in zone II, 7 times in zone III and 2 times in zone IV. According to Alnot's classification, the stages of pseudarthrosis were divided into: stage I (3), stage IIA (4), stage IIB (4), stage IIIA (1) and stage IIIB (0). The average postoperative immobilisation was 2.7 months. Consolidation was obtained in 10 cases, on average, after 3 months. 7 patients were very satisfied, 3 satisfied and 2 not satisfied. Five patients had significant pain at the time of grafting, but this disappeared within a few months, and all patients had no sequelae in retrospect. Compared to the healthy wrist, the range of motion was reduced in flexion (average 7.2q), extension (average 13.5q) and radial tilt (average 11.5q). The other areas of wrist mobility were respected (in particular supination and pronation). The carpal height index averaged 0.52, and 3 wrists had decreased height. The mean radiolunate angle was 4.2q . 4 wrists had a DISI deformity. 7 patients had little or no osteoarthritis. 2 pseudoarthroses could not be consolidated. All patients were improved for pain. The occurrence of osteoarthritis was favoured by the persistence of a DISI deformity. Although this technique allows 81% consolidation, it is outdated for advanced stages of arthrosis. The correction of an intra-carpal deformity in DISI appears to be essential to prevent the onset of arthrosis. This technique should not be used in cases of necrosis of the proximal pole, and a vascularised graft should probably be preferred.
