To analyze the clinical outcomes of periprosthetic femoral fracture after total hip arthroplasty (THA) with the application of Cable Ready system to different types of femoral prostheses.

A total of 79 patients with periprosthetic femoral fractures following THA who were treated surgically with Cable-Ready system in Xinjiang Uygur Autonomous Region Hospital of Traditional Chinese Medicine from 2010 to 2019, were retrospectively divided into the biotype prosthesis group (47 patients) and the cemented prosthesis group(32 patients) according to the prosthesis type in primary THA. The operation time, intraoperative blood loss, length of hospital stay, clinical healing of fractures, Harris score, and complications were compared between the two groups using t test, Mann-Whitney U test, or Chi-square test.

There was no statistically significant difference in gender (χ²= 0.855), age (t=-1.132), Vancouver classification (χ²=0.349), length of hospital stay (t=-0.872), or time to fracture healing (t=-1.336) between the two groups (all P>0.05). The duration of surgery (t=-5.860) and intraoperative blood loss (t=-50.128) were less in the biotype prosthesis group than those in the cemented prosthesis group (both P<0.05). The Harris pain scores (t=-1.897) and functional scores (t=1.757) before periprosthetic femoral fracture were compared between the two groups and there was no statistically significant difference (all P>0.05). One year after the operation, the changes of pain (Z=-1.157) and function condition (Z=-0.540) were compared between the two groups, and the differences were not statistically significant (both P>0.05), while the Harris deformity score (t=-0.858) and joint mobility score (t=-1.231) were basically consistent between the two groups at one year after the operation (both P>0.05). A total of seven complications occurred in the group with biotype prostheses during follow-up and six in the group with cemented prostheses, and the occurrence of complications in the two groups was almost the same (χ²=0.206, P>0.05).

When femoral periprosthetic fractures treated by Cable Ready system, the length of hospital stay, fracture healing time, and recovery of hip function are generally consistent in both the biotype and cemented prostheses, but the patients of biotype prosthesis for primary THA have shorter operation time and less blood loss.