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ORIGINAL ARTICLE
Year : 2019  |  Volume : 54  |  Issue : 1  |  Page : 34-39

Resection arthroplasty for treatment of nonunion and avascular necrosis of the distal scaphoid


Department of Orthopedic Surgery, Faculty of Medicine, Minia University, Minia, Egypt

Correspondence Address:
MD Ahmed O Youssef
Department of Orthopaedic, Minia University Hospital, Kornish El-Nile Street, Minia
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/eoj.eoj_10_19

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Background Posttraumatic osteonecrosis of distal pole of scaphoid is extremely rare, with only few reported cases so far. The purpose of this study was to evaluate the clinical and radiographic results of treatment of distal scaphoid nonunion and avascular necrosis with resection arthroplasty in adult patients. Patients and methods From 2008 to 2013, seven patients presented to the authors for treatment of nonunion and avascular necrosis of the distal part of the scaphoid following distal pole fracture. Pain was evaluated by means of the visual analog scale. The time to return to previous activities and work status were documented. Wrist function was measured according to the Mayo Modified Wrist Score. Carpal height index (Nattrass modification) and radiolunate angle were recorded. Results Follow-up period ranged from 24 to 60 months. Three patients had an excellent result (43%), and four had a good result (57%). There is significant postoperative improvement of pain, range of wrist motion, and Mayo Modified Wrist Score. All patients returned to their previous occupations within 2 months. There were statistically significant increases in the radiolunate angle and no significant decrease in Nattrass carpal height. Conclusion Resection of the distal scaphoid appears to be a valid technique and to constitute an alternative to vascularized bone graft or limited intercarpal arthrodesis for the treatment of scaphoid nonunion with avascular necrosis of distal pole. Level of evidence: level IV, case series.


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