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 .
A new short uncemented, proximally fixed anatomic femoral implant with a prominent lateral flare: design rationals and study design of an international clinical trial
Background Anatomic short femoral prostheses with a prominent lateral flare have the potential to reduce stress-shielding in the femur through a more physiological stress distribution to the proximal femur . We present the design rationale of a new short uncemented , proximally fixed anatomic femoral implant and the study design of a prospect i ve multi-centre trial to collect long-term patient outcome and radiographic follow up data . Methods A prospect i ve surveillance study ( trial registry NCT00208555 ) in four European centres ( UK , Italy , Spain and Germany ) with a follow up period of 15 years will be executed . The recruitment target is 200 subjects , patients between the ages of 18 and 70 admitted for primary cementless unilateral THA will be included . The primary objective is to evaluate the five-year survivorship of the new cementless short stem .  The secondary objectives of this investigation are to evaluate the long term survivorship and the clinical performance of the implant , the impact on the subjects health related Quality of Life and the affect of the prosthesis on bone mineral density . Peri- and postoperative complications will be registered . Clinical and radiographic evaluation of prosthesis positioning will be done post-operatively and at 3 , 6 , 12 , 24 , 60 , 120 and 180 months follow up . Discussion Shortening of the distal stem can maximise bone and soft tissue conservation . New stem types have been design ed to improve the limitations of traditional implants in primary THA . A new , uncemented femoral short stem is introduced in this paper . A long-term follow up study has been design ed to verify stable fixation and to research into the clinical outcome . The results of this trial will be presented as soon as they become available
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 .