Rotational Alignment of Femoral Component and Flexion Gap Balance in Patients with Distal Femoral Torsional Deformity Using Navigation-Assisted TKA

Orthopedics ◽  
2009 ◽  
Vol 32 (10/SUPPLEMENT) ◽  
pp. 52-55 ◽  
Author(s):  
Hong Chul Lim ◽  
Ji Hoon Bae ◽  
Devdatta Suhas Neogi ◽  
Joon Ho Wang ◽  
Chang Woo Seok ◽  
...  
Keyword(s):  
Femoral Component ◽  
Rotational Alignment ◽  
Torsional Deformity ◽  
Flexion Gap

Femoral Anterior Tangent Line of the Osteoarthritic Knee for Determining Rotational Alignment of the Femoral Component in Total Knee Arthroplasty

2011 ◽  
Vol 26 (2) ◽  
pp. 268-273 ◽  
Author(s):  
Hiroki Watanabe ◽  
Ryuichi Gejo ◽  
Yoshikazu Matsuda ◽  
Ichiro Tatsumi ◽  
Kazuo Hirakawa ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Femoral Component ◽  
Knee Arthroplasty ◽  
Rotational Alignment ◽  
Tangent Line ◽  
Osteoarthritic Knee ◽  
Total Knee

scholarly journals The Posterior Condylar Cartilage Affects Rotational Alignment of the Femoral Component in Varus Knee Osteoarthritis

2017 ◽  
Vol 64 (1.2) ◽  
pp. 24-29 ◽  
Author(s):  
Daisuke Hamada ◽  
Keizo Wada ◽  
Hiroshi Mikami ◽  
Shunichi Toki ◽  
Tomohiro Goto ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Femoral Component ◽  
Rotational Alignment ◽  
Varus Knee ◽  
Condylar Cartilage ◽  
Posterior Condylar

scholarly journals Computed Tomography Analysis of Postsurgery Femoral Component Rotation Based on a Force Sensing Device Method versus Hypothetical Rotational Alignment Based on Anatomical Landmark Methods: A Pilot Study

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Stefan W. Kreuzer ◽  
Amir Pourmoghaddam ◽  
Kevin J. Leffers ◽  
Clint W. Johnson ◽  
Marius Dettmer
Keyword(s):  
Computed Tomography ◽  
Femoral Component ◽  
Knee Arthroplasty ◽  
Force Sensor ◽  
Rotational Alignment ◽  
Force Sensing ◽  
Femoral Rotation ◽  
Transepicondylar Axis ◽  
Femoral Component Rotation ◽  
Component Rotation

Rotation of the femoral component is an important aspect of knee arthroplasty, due to its effects on postsurgery knee kinematics and associated functional outcomes. It is still debated which method for establishing rotational alignment is preferable in orthopedic surgery. We compared force sensing based femoral component rotation with traditional anatomic landmark methods to investigate which method is more accurate in terms of alignment to the true transepicondylar axis. Thirty-one patients underwent computer-navigated total knee arthroplasty for osteoarthritis with femoral rotation established via a force sensor. During surgery, three alternative hypothetical femoral rotational alignments were assessed, based on transepicondylar axis, anterior-posterior axis, or the utilization of a posterior condyles referencing jig. Postoperative computed tomography scans were obtained to investigate rotation characteristics. Significant differences in rotation characteristics were found between rotation according to DKB and other methods (P<0.05). Soft tissue balancing resulted in smaller deviation from anatomical epicondylar axis than any other method. 77% of operated knees were within a range of ±3° of rotation. Only between 48% and 52% of knees would have been rotated appropriately using the other methods. The current results indicate that force sensors may be valuable for establishing correct femoral rotation.

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