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.
Department of Orthopaedics, New York Medical College, Westchester Medical Center, Valhalla, NY 10595, USA. doctoramar@gmail.com
Amar D
AD
Rajadhyaksha
Hemant
H
Mehta
Steven B
SB
Zelicof
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