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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 32mm ceramic head group | Active Comparator | patients performed with THA using 32mm ceramic head |
|
| 28mm ceramic head group | Active Comparator | patients performed with THA using 28mm ceramic head |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| 32mm ceramic head group | Device | we performed THA using 32mm ceramic head in this group. |
|
| Measure | Description | Time Frame |
|---|---|---|
| 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. | 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. | 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. | 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. | 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. | 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. | 24 months |
| Measure | Description | Time Frame |
|---|---|---|
| clinical results using Harris Hip Score | to compare the clinical results such as pain, function, range of motion between both groups. | 6 weeks |
| clinical results using Harris Hip Score | to compare the clinical results such as pain, function, range of motion between both groups. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Kyung-Hoi Koo, professor | Seoul National University Bundang Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Seoul national University Bundang Hospital | Seongnam-si | Gyeonggi-do | 463-707 | South Korea |
| Type | Date | Date Unknown |
|---|---|---|
| Release | Mar 19, 2018 | |
| Reset | Oct 23, 2018 |
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| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Mar 19, 2018 | Oct 23, 2018 |
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| 28mm ceramic head group | Device | we performed THA using 28mm ceramic head in this group. |
|
| 3 months |
| clinical results using Harris Hip Score | to compare the clinical results such as pain, function, range of motion between both groups. | 6 months |
| clinical results using Harris Hip Score | to compare the clinical results such as pain, function, range of motion between both groups. | 9 months |
| clinical results using Harris Hip Score | to compare the clinical results such as pain, function, range of motion between both groups. | 12 months |
| clinical results using Harris Hip Score | to compare the clinical results such as pain, function, range of motion between both groups. | 24 months |