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 .
Hydroxyapatite-coated Femoral Components: 15-Year Minimum Followup
Hydroxyapatite-coated femoral components were introduced to enhance fixation , but concerns were raised about whether the coating would be maintained over time . We therefore determined the long-term clinical and radiographic results of a proximally hydroxyapatite-coated femoral component and compared the mechanical failure rate to other fixation methods at similar lengths of followup . The study group , culled from a large , multicenter prospect i ve study population , consisted of 146 patients ( 166 hips ) with followup of 15 to 18 years . Average age at time of the index procedure was 51 years , and the most common diagnoses were osteoarthritis ( 71 % ) and osteonecrosis ( 11 % ) . Average Harris hip scores were 42.7 preoperatively and 91.5 at most recent followup . Radiographically , one stem showed stable fibrous fixation , and all other unrevised stems were bony stable . Of 13 stem revisions in the study population , only one stem has been revised for aseptic loosening . Forty-nine percent of hips have an osteolytic lesion in proximal areas of Gruen Zones 1 , 7 , 8 , or 14 only . Both the femoral aseptic revision and mechanical failure rates are 0.6 % at 15-year minimum followup . The data demonstrate excellent long-term survivorship of this hydroxyapatite-coated femoral component used in a relatively young patient group . Level of Evidence : Level IV , therapeutic study . See the Guidelines for Authors for a complete description of levels of evidence
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 .