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 .
Changes in the bone mineral density in the acetabulum and proximal femur after cementless total hip replacement: alumina-on-alumina versus alumina-on-polyethylene articulation.
Our aim in this prospect i ve study was to compare the bone mineral density ( BMD ) around cementless acetabular and femoral components which were identical in geometry and had the same alumina modular femoral head , but differed in regard to the material of the acetabular liners ( alumina ceramic or polyethylene ) in 50 patients ( 100 hips ) who had undergone bilateral simultaneous primary total hip replacement .  Dual energy X-ray absorptiometry scans of the pelvis and proximal femur were obtained at one week , at one year , and annually thereafter during the five-year period of the study . At the final follow-up , the mean BMD had increased significantly in each group in acetabular zone I of DeLee and Charnley ( 20 % ( 15 % to 26 % ) , p=0.003 ) , but had decreased in acetabular zone II ( 24 % ( 18 % to 36 % ) in the alumina group and 25 % ( 17 % to 31 % ) in the polyethylene group , p=0.001 ) . There was an increase in the mean BMD in zone III of 2 % ( 0.8 % to 3.2 % ) in the alumina group and 1 % ( 0.6 % to 2.2 % ) in the polyethylene group ( p=0.315 ) . There was a decrease in the mean BMD in the calcar region ( femoral zone 7 ) of 15 % ( 8 % to 24 % ) in the alumina group and 14 % ( 6 % to 23 % ) in the polyethylene group ( p<0.001 ) . The mean bone loss in femoral zone 1 of Gruen et al was 2 % ( 1.1 % to 3.1 % ) in the alumina group and 3 % ( 1.3 % to 4.3 % ) in the polyethylene group ( p=0.03 ) , and in femoral zone 6 , the mean bone loss was 15 % ( 9 % to 27 % ) in the alumina group and 14 % ( 11 % to 29 % ) in the polyethylene group compared with baseline values . There was an increase in the mean BMD on the final scans in femoral zones 2 ( p=0.04 ) , 3 ( p=0.04 ) , 4 ( p=0.12 ) and 5 ( p=0.049 ) in both groups . There was thus no significant difference in the bone remodelling of the acetabulum and femur five years after total hip replacement in those two groups where the only difference was in the acetabular liner
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 .