Use of tibialis anterior tendon as distal landmark for extramedullary tibial alignment in total knee arthroplasty: an anatomical study.
We studied the accuracy of using the tibialis anterior tendon (TAT) as a distal landmark for extramedullary alignment in total knee arthroplasty. Forty-five consecutive ankle magnetic resonance imaging scans were reviewed. On the computerized images, a digital ruler was used to measure the distance from the midpoint of the distal tibia (point M) to the TAT. Mean distance was 1.89 mm; range was 0 to 4.5 mm (95% confidence interval, 1.45-2.33). For 7 (15.6%) of the 45 scans, the distance was 0 mm. On 38 scans (84.4%), the TAT was within 2 mm of point M. The TAT is an easily palpable fixed anatomical structure that corresponds very closely to the midpoint of the distal tibia.
Rajadhyaksha
Amar D
AD
Department of Orthopaedics, New York Medical College, Westchester Medical Center, Valhalla, NY 10595, USA. doctoramar@gmail.com
Mehta
Hemant
H
Zelicof
Steven B
SB
D000293:Adolescent; D000328:Adult; D000368:Aged; D000842:Ankle / Q000033:anatomy & histology; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D002648:Child; D005260:Female; D006801:Humans; D007430:Intraoperative Care; D007719:Knee Joint / Q000033:anatomy & histology* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control; D015203:Reproducibility of Results; D013710:Tendons / Q000033:anatomy & histology*; D013977:Tibia / Q000033:anatomy & histology*; D055815:Young Adult