@article {IWAI679, author = {TADASHI IWAI and MANABU HOSHI and NAOTO OEBISU and KUMI ORITA and AKIYOSHI SHIMATANI and NAOKI TAKADA and HIROAKI NAKAMURA}, title = {Risk Assessment for Pathological Fracture After Bone Tumour Biopsy}, volume = {41}, number = {2}, pages = {679--686}, year = {2021}, doi = {10.21873/anticanres.14819}, publisher = {International Institute of Anticancer Research}, abstract = {Aim: This study aimed to identify the risk of pathological fractures after bone tumour biopsy. Materials and Methods: Fifty rabbit femurs were divided into groups according to defect size: Control (no defect), type 1 (10\% width), type 2 (20\% width), type 3 (30\% width), and type 4 (40\% width). Another 20 were also divided into control, type A (27\% length), type B (40\% length), and type C (53\% length) groups. Performing femoral head compression testing allowed each parameter (maximum load, displacement, elastic modulus, and fracture energy) to be calculated individually. Results: Compressive maximum load was significantly higher for type 1 than for the other types when testing rectangular defects of different widths, while there were no significant differences between the three types when testing by defect length. Conclusion: It may be useful for orthopaedic oncologists to make a rectangular biopsy hole with a width measuring less than 10\% of the circumference and to enlarge the hole longitudinally to avoid pathological fracture.}, issn = {0250-7005}, URL = {https://ar.iiarjournals.org/content/41/2/679}, eprint = {https://ar.iiarjournals.org/content/41/2/679.full.pdf}, journal = {Anticancer Research} }