Abstract：
:We evaluated the rotational alignment of the femoral component after total knee arthroplasty in 46 patients with distal femoral torsional deformity using a navigation-assisted gap technique. Preoperative distal femoral torsional angle and postoperative rotational deviation of the femoral component were measured using computed tomography. Flexion gap data were obtained from intraoperative navigation measurements. The mean rotational deviation of the femoral component was 4.1 degrees (range, 2 degrees -6 degrees ) internal rotation in reference to transepicondylar axis (TEA). The femoral component was not aligned within 3 degrees in reference to TEA in 30 patients (65.2%). There was no significant difference of rotational deviation of the femoral component between unbalanced and balanced flexion gap groups (P=.65). There was a significant improvement of clinical outcomes after TKA. Navigation-assisted gap technique provided balanced flexion gaps in most patients, although there were wide rotational deviations of femoral components. Using the anatomic bony landmark method can result in excessive external rotation of the femoral component and unbalanced flexion gaps in patients with distal femoral torsional deformity.
journal_name
Orthopedicsjournal_title
Orthopedicsauthors
Lim HC,Bae JH,Neogi DS,Wang JH,Seok CW,Kim MKdoi
10.3928/01477447-20090915-61subject
Has Abstractpub_date
2009-10-01 00:00:00pages
52-5issue
10 Suppleissn
0147-7447issn
1938-2367journal_volume
32pub_type
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