It has been postulated that use of a larger femoral head could reduce the risk of dislocation after total hip arthroplasty, but only limited clinical data have been presented in third generation alumina bearings. The purpose of this study is to evaluate the effect of femoral head size for total hip arthroplasty using third generation alumina bearings on the joint stability and clinical results. The investigators hypothesized that larger ceramic head group has a similar rate of dislocation and clinical results in smaller ceramic head group.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
120
we performed THA using 32mm ceramic head in this group.
we performed THA using 28mm ceramic head in this group.
Seoul national University Bundang Hospital
Seongnam-si, Gyeonggi-do, South Korea
rate of dislocation in each head size
to evaluate the null hypothesis that the dislocation rate of larger ceramic head group is similar to smaller ceramic head group.
Time frame: 6 weeks
rate of dislocation in each head size
to evaluate the null hypothesis that the dislocation rate of larger ceramic head group is similar to smaller ceramic head group.
Time frame: 3 months
rate of dislocation in each head size
to evaluate the null hypothesis that the dislocation rate of larger ceramic head group is similar to smaller ceramic head group.
Time frame: 6 months
rate of dislocation in each head size
to evaluate the null hypothesis that the dislocation rate of larger ceramic head group is similar to smaller ceramic head group.
Time frame: 9 months
rate of dislocation in each head size
to evaluate the null hypothesis that the dislocation rate of larger ceramic head group is similar to smaller ceramic head group.
Time frame: 12 months
rate of dislocation in each head size
to evaluate the null hypothesis that the dislocation rate of larger ceramic head group is similar to smaller ceramic head group.
Time frame: 24 months
clinical results using Harris Hip Score
to compare the clinical results such as pain, function, range of motion between both groups.
Time frame: 6 weeks
clinical results using Harris Hip Score
to compare the clinical results such as pain, function, range of motion between both groups.
Time frame: 3 months
clinical results using Harris Hip Score
to compare the clinical results such as pain, function, range of motion between both groups.
Time frame: 6 months
clinical results using Harris Hip Score
to compare the clinical results such as pain, function, range of motion between both groups.
Time frame: 9 months
clinical results using Harris Hip Score
to compare the clinical results such as pain, function, range of motion between both groups.
Time frame: 12 months
clinical results using Harris Hip Score
to compare the clinical results such as pain, function, range of motion between both groups.
Time frame: 24 months
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