Page 120 - IJB-8-4

3D Bioprinting of Osteotomy-Aided Module

Figure 7. Sawbones osteotomy models.

A B

Figure 8. The deviation from average of mass (A) and volume (B) of every intermediate fragment was visualized with one-dimensional
histogram.
Here, we designed a new method of osteotomy-aided Moreover, the process of osteotomy relies too much
module production for bone biomechanical study with 3D on the experience of mechanical researchers, and the
printing and CAD and verified the accuracy of osteotomy. accuracy evaluation of osteotomy can be easily neglected.
To the best of our knowledge, unlike the traditional design At present, only few osteotomy-aided modules have been
research, this is the first work that describes the design introduced in bone biomechanical studies [8,9,12] . Windell
of osteotomy-aided modules using 3D printing and CAD et al. conducted a study on biomechanical comparison of
techniques. In addition, this study provides insight into periprosthetic femoral fracture risk in different implants
the application of digital orthopedic technology in bone of the composite Sawbones model. After approximately
biomechanics. determining the cutting position, a cutting guide was
The previous works are some in vitro bone used to ensure the standard cutting of the femur head and
biomechanical studies focusing on the evaluation of neck . However, the comparative analysis of osteotomy
[8]
mechanical advantage, dynamic stability, and post-operative accuracy was not performed.
implant-related complications (Table 2) [4,5,8,10,11,23,24] . The The osteotomy-aided modules for fracture models
pre-experiment osteotomy methods performed in these were first proposed by Windolf et al. They designed
[9]
studies were in accordance with international fracture a custom-made saw-guide that was fastened to the
classifications. However, we noticed that most of the side-plate and enabled simulation of an unstable 31-B2
studies did not involve standard osteotomy techniques. fracture. This device could be adjusted in anteroposterior

112 International Journal of Bioprinting (2022)–Volume 8, Issue 4