In recent years, the application of three-dimensional printing (3DP) in the field of medicine has been expanding and has become the focus of clinical research and application. The 3D reconstruction and 1:1 model can be used to analyze and evaluate the prosthesis installation before operation and improve the accuracy and clinical effect of total hip replacement. In particular, the preoperative evaluation of total hip arthroplasty (THA) in patients with spinal-pelvic sagittal plane deformity is significant. Lumbar degeneration is one of the most common spinal-pelvic sagittal plane malformations, it is difficult to determine acetabular anteversion in THA for these patients, and it is easy to cause postoperative complications. At present, 3DP has been used to determine the anteversion of THA in patients with lumbar degenerative disease, and this article reviews the research and application of 3DP in anteversion evaluation of THA for lumbar degenerative disease, as well as its clinical advantages and challenges.

Computer technology has undergone decades of advancement since its emergence and has been extensively used in various fields of life. Under the existing environment of rapid development of information and data technology, computer technology has also shown significant application value and application potential in medical treatment. The combination of computer technology and medicine has formed a new field described as digital medicine. This article reviews the progress in the application of digital medicine in pediatric orthopedics from the aspects of three-dimensional (3D) model reconstruction, virtual reality technology, 3D printing, artificial intelligence, robots, and biomechanical analysis by finite element method. At the same time, this paper also preliminarily discusses the advantages and disadvantages of digital medicine in the current clinical application and possible future developments.