A new patient-specific planning method based on joint contact force balance with soft tissue release in total knee arthroplasty

2013 ◽  
Vol 14 (12) ◽  
pp. 2193-2199 ◽  
Author(s):  
Huynh Le Minh ◽  
Won Man Park ◽  
Kyungsoo Kim ◽  
Seung-Woo Son ◽  
Sang-Hun Lee ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Soft Tissue ◽  
Contact Force ◽  
Knee Arthroplasty ◽  
Force Balance ◽  
Soft Tissue Release ◽  
Patient Specific ◽  
Joint Contact Force ◽  
Joint Contact ◽  
Total Knee

Total knee arthroplasty for valgus osteoarthritis: the results of a standardized soft-tissue release technique

2016 ◽  
Vol 24 (8) ◽  
pp. 2525-2531 ◽  
Author(s):  
Friedrich Boettner ◽  
Lisa Renner ◽  
Danik Arana Narbarte ◽  
Claus Egidy ◽  
Martin Faschingbauer
Keyword(s):  
Total Knee Arthroplasty ◽  
Soft Tissue ◽  
Knee Arthroplasty ◽  
Soft Tissue Release ◽  
Release Technique ◽  
Valgus Osteoarthritis ◽  
Total Knee

Is Standing Coronal Long-Leg Alignment View Effective in Predicting the Extent of Medial Soft Tissue Release in Varus Deformity during Total Knee Arthroplasty?

2021 ◽  
Author(s):  
Mohammadreza Minator Sajjadi ◽  
Mohammad Ali Okhovatpour ◽  
Yaser Safaei ◽  
Behrooz Faramarzi ◽  
Reza Zandi
Keyword(s):  
Total Knee Arthroplasty ◽  
Soft Tissue ◽  
Knee Arthroplasty ◽  
Varus Deformity ◽  
Soft Tissue Release ◽  
Varus Knee ◽  
Significant Difference ◽  
Leg Alignment ◽  
Total Knee ◽  
Group 2

AbstractThe aim of this study was to assess the predictive value of the femoral intermechanical-anatomical angle (IMA), mechanical lateral distal femoral angle (mLDFA), medial proximal tibia angle (MPTA), femorotibial or varus angle (VA), and joint line convergence angle (CA) in predicting the stage of the medial collateral ligament (MCL) during total knee arthroplasty (TKA) of varus knee. We evaluated 229 patients with osteoarthritic varus knee who underwent primary TKA, prospectively. They were categorized in three groups based on the extent of medial soft tissue release that performed during TKA Group 1, osteophytes removal and release of the deep MCL and posteromedial capsule (stage 1); Group 2, the release of the semimembranosus (stage 2); and Group 3, release of the superficial MCL (stage 3) and/or the pes anserinus (stage 4). We evaluated the preoperative standing coronal hip-knee-ankle alignment view to assessing the possible correlations between the knee angles and extent of soft tissue release. A significant difference was observed between the three groups in terms of preoperative VA, CA, and MPTA by using the Kruskal–Wallis test. The extent of medial release increased with increasing VA and CA as well as decreasing MPTA in preoperative long-leg standing radiographs. Finally, a patient with a preoperative VA larger than 19, CA larger than 6, or MPTA smaller than 81 would need a stage 3 or 4 of MCL release. The overall results showed that the VA and MPTA could be useful in predicting the extent of medial soft tissue release during TKA of varus knee.

scholarly journals Effect of smoking and soft tissue release on risk of revision after total knee arthroplasty: a case- control study

2015 ◽  
Vol 16 (1) ◽  
Author(s):  
Benedict U. Nwachukwu ◽  
Ellen B. Gurary ◽  
Vladislav Lerner ◽  
Jamie E. Collins ◽  
Thomas S. Thornhill ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Soft Tissue ◽  
Knee Arthroplasty ◽  
Case Control Study ◽  
Case Control ◽  
Soft Tissue Release ◽  
Total Knee ◽  
Control Study

scholarly journals Functional Correctability of the Knee Joint using 3D-to-2D Registration of X-Ray Imaging in Stressed Positions

10.29007/g7l8 ◽  
2020 ◽  
Author(s):  
Jialong Li ◽  
David Liu ◽  
Stephen McMahon ◽  
Jonathan Baré ◽  
Andrew Shimmin ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Soft Tissue ◽  
Knee Joint ◽  
Knee Arthroplasty ◽  
Ct Scans ◽  
Patient Specific ◽  
Anatomical Landmarks ◽  
X Ray ◽  
Total Knee ◽  
Tissue Structures

Correcting the knee joint to accommodate the pre-existing soft tissue structures is a major aim in total knee arthroplasty. 3D-to-2D registration of segmented boney geometry obtained from computer tomography (CT) scans to functionally stressed positions in X-Ray (XR) imaging can be a more accurate method of obtaining the laxity envelop. From which, a more patient specific limit for the correctability of the knee joint can be found. Supine CT scans were segmented, and 3D bone models and anatomical landmarks were registered to 2D functional stressed XR imaging. The functional position of the patient femoral and tibial bone is then used to calculate the varus and valgus extent of the patient’s knee joint laxity. 103 preoperative knees undergoing primary total knee arthroplasty identified from six different surgeons. The range of patients who are correctable back to within 3 degrees when a force is applied is 52%. 65% of patients who were within 3 degrees varus/valgus for tibia varus were correctable, while 41% of patients who were within 3 degrees varus/valgus for femoral valgus were correctable. 26% of patients were correctable when the LDFA is outside the threshold and MPTA is not, while 56% of patients were correctable when the MPTA is outside the threshold and LDFA is not. This study demonstrates the complexity of soft tissue structures of the knee joint. The main finding of this study is that correctability is more sensitive to the proximal tibial than the distal and posterior femoral articulating geometry. A lack of dependency between correctability of the knee joint and anatomical measures specific to flexion of the knee is seen. Careful consideration should be made intraoperatively when balancing the knee joint flexion gaps surrounding the soft tissue structures.

An Algorithmic, Pie-Crusting Medial Soft Tissue Release Reduces the Need for Constrained Inserts Patients With Severe Varus Deformity Undergoing Total Knee Arthroplasty

2016 ◽  
Vol 31 (7) ◽  
pp. 1465-1469 ◽  
Author(s):  
Kaveh Goudarz Mehdikhani ◽  
Beatriz Morales Moreno ◽  
Jeremy J. Reid ◽  
Ana de Paz Nieves ◽  
Yuo-Yu Lee ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Soft Tissue ◽  
Knee Arthroplasty ◽  
Varus Deformity ◽  
Soft Tissue Release ◽  
Total Knee
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