International orthopaedics
-
The number of patients having hip and knee arthroplasties on the ipsilateral leg is going to rise. In this regard, the prevalence of interprosthetic femoral fractures is going to increase further. The treatment of these fractures is difficult and sometimes it is impossible to perform an osteosynthesis because of worse bone quality. The goal of this study was to investigate the use of an interposition sleeve as an alternative treatment option for interprosthetic fractures with major bone loss. ⋯ The interposition sleeve is a valuable treatment option for interprosthetic fractures in situations in which osteosynthesis is impossible or insecure due to major bone defects. However, fracture healing should be preferred whenever possible.
-
The Vancouver Classification System (VCS) for assessing periprosthetic femoral fractures has become universally accepted. The Unified Classification System (UCS) has expanded upon and updated the VCS and applied treatment principles to all periprosthetic fractures. However, periprosthetic femoral fractures accompanied by stem fracture after hip arthroplasty were not classifiable under the original VCS or the UCS. ⋯ We believe that our new fracture pattern, a supplement to the VCS and UCS, is useful in the establishment of a therapeutic strategy for periprosthetic femoral fractures.
-
The purpose of this study is to report on the cumulative incidence and the outcome of surgically-treated postoperative PPFs in patients with femoral neck fractures treated with a THA or HA using an Exeter stem. ⋯ The cumulative incidence of surgically treated PPFs was considerable among patients with Exeter stems operated due to a femoral neck fracture. The re-operation rate due to fracture-related complications was highest among patients with B2 fractures.
-
The aim of this study was to determine the biomechanical properties of four fixation options for periprosthetic supracondylar femoral fractures. ⋯ The intramedullary fibular strut allograft with polyaxial locking plate did not prove to be significantly better to the polyaxial locking plate only in a periprosthetic distal femur fracture model.
-
The purpose of this study was to test the hypothesis that overstuffing the patellofemoral joint during total knee arthroplasty (TKA) would decrease passive knee flexion and alter patellar kinematics during knee flexion. ⋯ Passive knee flexion after TKA is significantly reduced when overstuffing the patellofemoral joint by +8 mm, and patellofemoral kinematics are altered when overstuffing the joint by +6 mm. These results demonstrate the relatively modest effects of patellofemoral overstuffing on knee flexion and patellar tracking kinematics after TKA.