Treatment of Distal Radio Vicious Consolidation: Corrective Osteotomy Through 3D Printing Prototyping.

Distal radial fractures are very common. Vicious consolidation can occur in up to one third of these fractures, resulting in wrist pain, restricted movement, and, eventually, physical limitation or disability. The treatment of this condition consists in corrective osteotomy, which requires careful preoperative planning due to its three-dimensional complexity, especially in injuries with joint involvement. Recently, prototyping based on three-dimensional (3D) reconstruction of computed tomography (CT) scans has been used for osteotomy planning in a 3D anatomical model. It allows a better understanding of the deformity in a realistic surgical approach, leading to safer, faster, and more predictable procedures. The aim of the present study is to present this technique and show its use in two clinical cases.

The malunion of distal radius fracture: Corrective osteotomy through planning with prototyping in 3D printing.

INTRODUCTION: Distal radius fractures (DRF) are among the most frequent in the body. About one third of these fractures can result in malunion with restriction of movement and pain in the wrist, the treatment in these cases consists of corrective osteotomy of the deformity. Due to its three-dimensional (3D) complexity, careful preoperative planning is a fundamental step in correction. The prototyping from the 3D reconstruction of the computed tomography of the affected wrist, allows the real understanding of the deformity. METHODS: Patients with malunion of the distal radius with indication for surgical treatment, from December 2019, were included in the group of corrective osteotomies through planning with prototyping in 3D printing. The postoperative functional outcome was assessed by the Disabilities of the Arm, Shoulder and Hand Score (DASH) and visual analogue scale (VAS). Radiographic data including radial inclination, volar tilt and joint step were recorded from standard posteroanterior and lateral radiographic views. RESULTS: A total of 9 patients were included. The mean age was 47 years. The average postoperative DASH value of the patients was 24.9 and VAS was 3.6. Radiographically, the palmar tilt had an average improvement of 25.22°, and the radial inclination had an average improvement of 2°. CONCLUSION: Corrective osteotomy through planning with prototyping in 3D printing is an effective method of treating symptomatic distal radius malunions. The possibility of performing the osteotomy in a 3D model, simulating the surgery, making the procedure more predictable.

Bony Histiocytic Sarcoma of the Scapula: Case Report.

Case report of a pediatric patient with a diagnosis of bony histiocytic sarcoma of the scapula, submitted to oncologic resection (Tikhoff-Linberg type II surgery), who returned to previous activities and was disease-free after 24 months of follow-up.

Bony Histiocytic Sarcoma of the Scapula: Case Report / Sarcoma histiocítico ósseo em escápula: relato de caso

Abstract Case report of a pediatric patient with a diagnosis of bony histiocytic sarcoma of the scapula, submitted to oncologic resection (Tikhoff-Linberg type II surgery), who returned to previous activities and was disease-free after 24 months of follow-up.

Resumo Relato de caso de paciente pediátrico com diagnóstico de sarcoma histiocítico ósseo em escápula, submetido à ressecção oncológica (cirurgia de Tikhoff-Linberg tipo II), com retorno às atividades prévias e livre de doença após 24 meses de seguimento.