The hypothesis of this study is that total knee alignment will be improved by preoperative planning from CT scans and the production of custom instruments compared to the use of standard instruments.
Patients will be randomized to have either customized knee instruments or standard generic instrumentation for primary total knee replacement. Postoperative CT scan will be used to determine alignment of each group.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
64
these patient will have CT based customized knee instruments used for surgery
these patients will have standard instrumentation used for for knee replacement
Palo Alto VA HCS
Palo Alto, California, United States
Alignment of Knee - Measured Mechanical Axis From CT Data
the mean knee mechanical axis was determined from 3D CT data - negative value designates varus alignment
Time frame: postoperatively - CT done within 1 week of surgery
Surgical Time
the difference between the average surgical time will be determined and compared with 95% CI
Time frame: intraoperative surgical time
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