Our results suggest that compared with CS , SS may provide superior bone remodelling and similar survival rates and clinical outcomes .
However , the short-term follow-up of the included studies was inadequate to determine the long-term performance of SS
OBJECTIVE Cementless total hip arthroplasty (  THA ) is associated with reliable clinical results and high patient satisfaction .
Short-stem prostheses ( SS ) were design ed to achieve superior preservation of proximal bone stock and stability compared with those of conventional-stem prostheses ( CS ) .
This meta- analysis was conducted to determine the proximal bone remodelling , revision rate , Harris Hip Score , radiolucent line and maximum total point motion values of both SS and CS for primary THA .
Maintenance of bone mineral density after implantation of a femoral neck hip prosthesis
Background Stress shielding of the proximal femur has been observed in a number of conventional cementless implants used in total hip arthroplasty .  Short femoral-neck implants are cl aim ing less interference with the biomechanics of the proximal femur . The goal of this study was to investigate the changes of bone-mineral density in the proximal femur and the clinical outcome after implantation of a short femoral-neck prosthesis . Methods We prospect ively assessed the clinical outcome and the changes of bone mineral density of the proximal femur up to one year after implantation of a short femoral neck prosthesis in 20 patients with a mean age of 47 years ( range 17 to 65 ) . Clinical outcome was assessed using the Harris Hip Score . The WOMAC was used as a patient-relevant outcome -measure . The bone mineral density was determined using dual energy x-ray absorptiometry , performed 10 days , three months and 12 months after surgery . Results The Harris Hip Score improved from an average preoperative score of 46 to a postoperative score at 12 months of 89 points , the global WOMAC index from 5,3 preoperatively to 0,8 at 12 months postoperatively . In contrast to conventional implants , the DEXA-scans overall revealed a slight increase of bone mineral density in the proximal femur in the 12 months following the implantation . Conclusion The short femoral neck stem lead to a distinct bone reaction . This was significantly different when compared to the changes in bone mineral density reported after implantation of conventional implants
Our results suggest that compared with CS , SS may provide superior bone remodelling and similar survival rates and clinical outcomes .
However , the short-term follow-up of the included studies was inadequate to determine the long-term performance of SS
OBJECTIVE Cementless total hip arthroplasty (  THA ) is associated with reliable clinical results and high patient satisfaction .
Short-stem prostheses ( SS ) were design ed to achieve superior preservation of proximal bone stock and stability compared with those of conventional-stem prostheses ( CS ) .
This meta- analysis was conducted to determine the proximal bone remodelling , revision rate , Harris Hip Score , radiolucent line and maximum total point motion values of both SS and CS for primary THA .