Digital design and clinical application of intramedullary nailing fixation for femoral shaft fracture based on accurate three-dimensional measurement / 中国组织工程研究

ABSTRACT

BACKGROUND:The limitation of the traditional intramedulary nailing relies on the personal experience of the doctor. Moreover, the enlargement of the bone marrow causes the destruction of the biological environment of the marrow cavity and affects the healing of bone. OBJECTIVE:To observe therapeutic effect of digital technology assisted intramedulary nail fixation for femoral shaft fracture. METHODS:A total of 80 patients with femoral shaft fracture, who were treated in the Department of Orthopedics, Affiliated Hospital of Putian University from January 2010 to January 2014, were enroled. Digital technology was used to assist treatment. Three-dimensional digital model of femoral shaft fracture was established before treatment. Virtual reduction was conducted in the three-dimensional digital fractures. The diameter of medulary cavity was measured. Appropriate specification of intramedulary nailing was selected according to the measurement data. Closed reduction and intramedulary nailing were performed according to operation scheme of digital technology. RESULTS AND CONCLUSION:The 80 patients were folowed up for 12 to 24 months. Fractures were completely healed. At 12 months after treatment, they were evaluated by clinical curative effect standard in department of orthopedics. There were excelent in 62 cases, good in 15 cases, and good in 3 cases, with the excelent and good rate of 96%. No complications occurred such as infection, fixator breakage or loosening. These results verify that digital technology assisted intramedulary nail fixation for femoral shaft fracture obtained positive therapeutic effects, could obviously shorten operation time, reduce surgical trauma, and diminish intraoperative X-ray emission to patients and health care workers.