Custom-Fit Total Knee Arthroplasty: Our Initial Experience in 32 Knees
Section snippets
Materials and Methods
This prospective study included 29 patients (16 were male and 13 were female) who had 32 knee arthroplasties done using custom-fit technique between May 2010 and March 2011. A written informed consent was taken from all the patients. The inclusion criterion was patients undergoing TKA for the diagnosis of primary osteoarthritis. Patients with history of trauma, malaligned femoral/tibial shafts, or prior history of surgery on the knee were also included as long as they did not have any form of
Results
Table 1 summarizes the demographic profile of the patients. The mean age of the patients was 64.1 years (range, 47-100 years). The mean BMI was 31 kg/m2 (range, 20-45 kg/m2). None of the patients had neutral preoperative alignment. Preoperative varus/valgus deformities at the time of surgery included 19 patients with varus alignment (−6.6° ± 2.6°; maximum, −14.0°) and 13 with valgus alignment (7.1° ± 3.6°; maximum, 16.0°). There were only 4 patients with a deformity greater or equal to 10° (2
Discussion
The purposes of the study were to share our initial experience with custom-fit TKA and to see if such a technique restored mechanical axis as accurately as the standard techniques. Various studies have cited the importance of proper coronal alignment for a successful TKA, concluding that alignment outside 3° leads to decreased survivorship 3, 4, 5, 6, 7. As such, the implantation technique should minimize or eliminate postoperative mechanical axis malalignment. Our results showed that the
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The Conflict of Interest statement associated with this article can be found at doi:10.1016/j.arth.2011.12.006.