Newly designed 3D-printed lattice hemipelvis prosthesis improves osteointegration and favorable limb function: study

Key findings of the study were:

• Multiple pore sizes were observed in irregular porous structures, with a wide distribution range (approximately 300–900 μm).

• The average follow-up was 34.7 months, ranging 26 from to 43 months.

• One patient with Ewing sarcoma died of pulmonary metastasis 33 months after surgery while others were alive at the last follow-up.

• Postoperative radiographs showed that the prosthesis’s position was consistent with the preoperative planning. T-SMART images showed that the host bone was in close and tight contact with the prosthesis with no gaps at the interface.

• The average MSTS score was 21 at the last follow-up, ranging from 18 to 24.

• There was no complication requiring revision surgery or removal of the 3D-printed hemipelvis prosthesis, such as infection, screw breakage, and prosthesis loosening.

The authors concluded that – “The newly designed 3D-printed lattice hemipelvis prosthesis created multiple pore sizes with a wide distribution range and resulted in good osteointegration and favorable limb function.”

Further reading:

Biomimetic design and clinical application of Ti-6Al-4V lattice hemipelvis prosthesis for pelvic reconstruction Li et al. Journal of Orthopaedic Surgery and Research (2024) 19:210 https://doi.org/10.1186/s13018-024-04672-5