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 .
No Difference in Periprosthetic Bone Loss and Fixation Between a Standard-Length Stem and a Shorter Version in Cementless Total Hip Arthroplasty. A Randomized Controlled Trial.
BACKGROUND Cementless femoral stems in total hip arthroplasty provide dependable clinical and radiographic results in the treatment of osteoarthritis . Stem length might affect the preservation of proximal bone stock and stability . We hypothesized that a shorter stem decreases proximal bone loss without affecting implant stability . METHODS We r and omly assigned 60 patients aged between 50 and 70 years to either a st and ard cementless femoral stem or a 35-mm shorter version . Patients were followed with dual-energy X-ray absorptiometry , radiostereometric analysis , Harris hip score , Western Ontario and McMaster Universities Osteoarthritis Index score , and clinical follow-up at 3 , 6 , 12 , and 24 months . The trial is registered on Clinical Trials.gov/. RESULTS After 24 months , short stems had on average 3.8 % ( 95 % confidence interval , 1.2%-8.9 % ) more bone loss in zone 1 compared to st and ard stems ( P = .14 ) . In zone 7 , the bone loss was on average 6.5 % ( 95 % confidence interval , 6.6%-19.7 % ) higher compared to st and ard stems ( P = .33 ) . After 24 months , st and ard stems had migrated 0.93 mm ( range , 0.25 - 4.66 mm ) and short stems 0.93 mm ( range , 0.17 - 2.96 mm ; Student t-test after log transformation , P = .3 ) . Patient-reported outcome measures were similar in both groups . One patient in the st and ard stem group was diagnosed with infection , one with a posterior dislocation , and one with a deep venous thrombosis . No stems were revised . CONCLUSION There were no statistically significant differences in periprosthetic bone loss or fixation between the stems at 24 months
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 .