scholarly journals A prospective analytical study on the effect of posterior femoral condylar offset on range of knee flexion in patients undergoing cruciate retaining total knee arthroplasty

2021 ◽  
Author(s):  
Ranjit Kumar G. ◽  
Murukan Babu ◽  
Tom Jose
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Flexion ◽  
Analytical Study ◽  
Strong Positive Correlation ◽  
Range Of Movement ◽  
Cruciate Retaining ◽  
Positive Correlation ◽  
Before And After ◽  
Total Knee

<p><strong>Background:</strong> Osteoarthritis (OA) of knee joint is a common problem in our society causing pain, deformity, oedema, malalignment and limitation of activity. Total knee arthroplasty (TKA) is the surgery done for treatment of this problem. The range of movement obtained after TKA is an important factor influencing success of surgery. Posterior femoral condylar offset (PCO) is one of the parameters influencing range of movement after surgery. The dearth of studies in Indian population and contradicting results in already conducted studies has been observed in assessing the effect of PCO on range of knee flexion in patients undergoing TKA. Hence this study is done to explore this correlation.</p><p><strong>Methods:</strong> A prospective analytical study on 36 patients (50 knees) who underwent cruciate retaining TKA at Department of Orthopaedics, Rajagiri Hospital, Aluva. PCO and posterior femoral condylar offset ratio (PCOR) were calculated radiologically before and after TKA. Range of flexion (ROF) and knee society scores (for functional outcome assessment) were recorded preoperatively and postoperatively (at 6 weeks and 3 months).</p><p><strong>Results:</strong> The study found a strong positive correlation between PCO difference and ROF difference (r=0.735). Strong positive correlation was also found between PCOR difference and ROF difference (r=0.777). Both these correlations were statistically significant (p&lt;0.05).</p><p><strong>Conclusions:</strong> The study enlightened us about the point that PCO is an important factor in attaining a good ROF after cruciate retaining TKA.</p>

Biomechanical Effects of Kneeling With Posterior Cruciate Retaining and Posterior Cruciate Substituting Total Knee Arthroplasty

2009 ◽  
Author(s):  
Jason K. Hofer ◽  
Ryuichi Gejo ◽  
Michelle H. McGarry ◽  
Thay Q. Lee
Keyword(s):  
Total Knee Arthroplasty ◽  
Activities Of Daily Living ◽  
Knee Arthroplasty ◽  
Knee Flexion ◽  
Daily Living ◽  
Middle Eastern ◽  
Large Role ◽  
Asian Countries ◽  
Cruciate Retaining ◽  
Total Knee

Kneeling is an activity that is important in certain occupations and recreational activities. Culturally, kneeling plays a large role in Middle Eastern and Asian countries, where activities of daily living require the ability to kneel and achieve deep knee flexion.

In Vivo Comparison of Knee Kinematics Before and After High-Flexion Posterior Cruciate-Retaining Total Knee Arthroplasty

2010 ◽  
Vol 25 (6) ◽  
pp. 964-969 ◽  
Author(s):  
Atsushi Kitagawa ◽  
Nobuhiro Tsumura ◽  
Takaaki Chin ◽  
Kazuyoshi Gamada ◽  
Scott A. Banks ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Kinematics ◽  
Cruciate Retaining ◽  
High Flexion ◽  
Before And After ◽  
Total Knee

scholarly journals Cruciate Retaining compared with Posterior Stabilised Nexgen total knee arthroplasty: results at 10 years in a matched cohort

2017 ◽  
Vol 99 (8) ◽  
pp. 602-606 ◽  
Author(s):  
AIW Mayne ◽  
HP Harshavardhan ◽  
LR Johnston ◽  
W Wang ◽  
A Jariwala
Keyword(s):  
Total Knee Arthroplasty ◽  
Patient Satisfaction ◽  
Range Of Motion ◽  
Knee Arthroplasty ◽  
Functional Score ◽  
Range Of Movement ◽  
Cruciate Retaining ◽  
Score Improvement ◽  
Total Knee

INTRODUCTION Debate has persisted for many years about whether to sacrifice or replace the posterior cruciate ligament when performing total knee arthroplasty. A paucity of long-term follow-up studies comparing outcomes between cruciate-retaining and posterior-stabilised knees exist. We aimed to compare results at ten-year follow-up. METHODS A matched paired study comparing a cohort of 107 Zimmer Nexgen® Cruciate Retaining (CR) patients with a cohort of 107 Nexgen Posterior-Stabilised (PS) knees matched for age, sex, body mass index and preoperative American Knee Society score was undertaken. All patients underwent independent clinical assessment and knee society scoring preoperatively and at 1, 3, 5, 7 and 10 years postoperatively. RESULTS Fifty-three patients (49.5%) in the CR group and 44 patients (41.1%) in the PS group were alive at 10-year follow-up. There were no significant differences between the CR and PS groups with regards to functional assessment (P = 0.95), overall range of movement (P = 0.46) or patient satisfaction (P = 1.0) at 10 years. However, there was a significantly better score improvement in range of movement in PS knees compared with CR knees (P = 0.027). There were six revisions (5.6%) in the PS group and 1 (0.93%) in the CR group (P = 0.12). Both CR and PS knees showed excellent survivorship with no significant difference at 10 years (P = 0.068). CONCLUSIONS There were no significant differences in functional score, overall range of motion or patient satisfaction between the Nexgen cruciate retaining and posterior stabilised total knee arthroplasty at 10-year follow-up. However, PS knees had a greater score improvement in range of motion compared with CR knees.

scholarly journals Kinematic factors affecting postoperative knee flexion after cruciate-retaining total knee arthroplasty

2013 ◽  
Vol 37 (5) ◽  
pp. 803-808 ◽  
Author(s):  
Tokio Matsuzaki ◽  
Tomoyuki Matsumoto ◽  
Hirotsugu Muratsu ◽  
Seiji Kubo ◽  
Takehiko Matsushita ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Flexion ◽  
Factors Affecting ◽  
Cruciate Retaining ◽  
Total Knee ◽  
Postoperative Knee

scholarly journals Articular contact kinematics of the knee before and after a cruciate retaining total knee arthroplasty

2014 ◽  
Vol 33 (3) ◽  
pp. 349-358 ◽  
Author(s):  
Chunbao Li ◽  
Ali Hosseini ◽  
Tsung-Yuan Tsai ◽  
Young-Min Kwon ◽  
Guoan Li
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Cruciate Retaining ◽  
Contact Kinematics ◽  
Before And After ◽  
Total Knee

Posterior Condyle Offset and Maximum Knee Flexion Following a Cruciate Retaining Total Knee Arthroplasty

2018 ◽  
Vol 32 (02) ◽  
pp. 146-152 ◽  
Author(s):  
Wei Wang ◽  
Bin Yue ◽  
JianHua Wang ◽  
Hany Bedair ◽  
Harry Rubash ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Flexion ◽  
Weight Bearing ◽  
Flexion Angle ◽  
Knee Flexion Angle ◽  
Cruciate Retaining ◽  
Posterior Condyle ◽  
Postoperative Changes ◽  
Total Knee

Inconsistent data has been reported on the effect of the femoral posterior condyle offset (PCO) on the maximal knee flexion after total knee arthroplasty (TKA). This study investigated the relationship between the postoperative changes of the PCO and the changes of maximal knee flexion after a cruciate retaining (CR) TKA. Nine patients with medial osteoarthritis (OA) in one knee were investigated. Before operation, each index knee was magnetic resonance imaging (MRI) scanned for construction of a three-dimensional (3D) knee model. The patient then performed a maximal weight-bearing (WB) flexion and the index knee flexion was measured using a dual fluoroscopy technique. At an average of 8 months after a CR TKA, all patients performed the same WB knee flexion. The postoperative changes of the PCO, the posterior cruciate ligament (PCL) elongation, and the posterior tibial slope (PTS) were determined. The postoperative changes of maximal knee flexion were determined by comparing with the preoperative maximal flexion angles of the knee. The correlations of the postoperative changes of PCO and PTS with the postoperative changes of the maximal flexion angle and PCL elongation of the knee were analyzed. The preoperative PCO (28.5 ± 4.5 mm) was significantly smaller than the postoperative PCO (31.1 ± 5.1 mm) (p < 0.05). The increasing of PCO after surgery is correlated with the decreasing of maximal knee flexion angle (r = 0.74) and the increasing of PCL elongation (r = 0.64) after the TKA. The PTS was not found to change significantly after the TKA and was not significantly correlated to the maximal knee flexion angle and PCL elongation. The postoperative increases of the PCO were shown to cause overstretching of the PCL and poor flexion angle of the knee after the CR TKA. Restoration of PCO could help optimize the maximal flexion of the knee after the TKA with consideration about PCL tension.

Postoperative Knee Flexion Angle Is Affected by Lateral Laxity in Cruciate-Retaining Total Knee Arthroplasty

2016 ◽  
Vol 31 (2) ◽  
pp. 401-405 ◽  
Author(s):  
Naoki Nakano ◽  
Tomoyuki Matsumoto ◽  
Hirotsugu Muratsu ◽  
Koji Takayama ◽  
Ryosuke Kuroda ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Flexion ◽  
Flexion Angle ◽  
Knee Flexion Angle ◽  
Cruciate Retaining ◽  
Total Knee ◽  
Postoperative Knee

scholarly journals Tibial bowing and tibial component placement in primary total knee arthroplasty in valgus knees: Are we overlooking?

2019 ◽  
Vol 27 (3) ◽  
pp. 230949901986700
Author(s):  
Dhanasekararaja Palanisami ◽  
Melvin J George ◽  
Arif Mohammed Hussain ◽  
Chunchesh MD ◽  
Rajkumar Natesan ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Tibial Component ◽  
Weight Bearing ◽  
Valgus Deformity ◽  
Strong Positive Correlation ◽  
Component Placement ◽  
Positive Correlation ◽  
Total Knee ◽  
The Mean

Purpose: Tibial bowing in valgus knees with arthritis can lead to component malplacement during total knee arthroplasty (TKA). Incidence of valgus knees with medial tibial bowing, its effect on tibial component placement during primary TKA and methods to improve accuracy of the component placement were studied. Methods: Full-length weight-bearing alignment radiograph was taken in 117 patients (149 knees) with valgus deformity undergoing TKA. In these cases, the proximal tibial reference for extramedullary jig placement was planned preoperatively with reference to the tibial spines and classified as four zones. Results: The mean preoperative hip–knee–ankle (HKA) angle was 192.9° (180.3–234.5°). Bowing >3° was considered significant ( p < 0.001) and at this level of bowing, the proximal tibial reference was shifted from centre to medial. Tibial bowing <3° was considered straight and >3° as tibia valga. Tibia was bowed in 70 knees (46.97%). Severity of valgus deformity had strong positive correlation with the tibia valga ( p < 0.001). The post-operative medial proximal tibial angle (MPTA) and HKA angle were 91.63° (87.9–95.7°) and 182.6° (178.1–189.7°), respectively. The mean MPTA and post-operative HKA angle in bowed and straight tibiae were 90.35° versus 89.78° ( p = 0.547) and 181.5° versus 180.7° ( p = 0.5716), respectively, and the difference was not statistically significant. Conclusion: Medial tibial bowing is very common in valgus knees. Tibia valga has a strong positive correlation with the severity of valgus deformity. Accurate tibial component placement can be achieved with a medialized reference point for extramedullary tibial cutting jig in knees with significant tibia valga. The study has been registered in clinical trials registry – India (CTRI/2018/03/012283).

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