DEFORMATION AND CONTRACTURE OF KNEE JOINT

2021 ◽  
pp. 12-18
Author(s):  
M.А. Alqatawneh ◽  
◽  
E.V. Zhuk ◽  
P.I. Bespalchuk ◽  
◽  
...  
Keyword(s):  
Navigation System ◽  
Computer Navigation ◽  
Standard Technique ◽  
Functional Results ◽  
Control Group ◽  
Optimal Range ◽  
Total Knee ◽  
The Moment ◽  
Significant Superiority

The article provides a comparative analysis of the functional results of total knee arthroplasty and its postoperative deformity and contracture in 124 patients (22 men and 102 women) suffering from gonarthrosis, aged 51 to 83 years (average 69.8 years), operated on with using a standard technique (n = 62) or using a computer navigation system (n = 62), observed for 12 months, from the moment of surgery. The use of the navigation system made it possible in a number of cases to achieve more accurate resection of the femur and tibia (6.5 % of cases of deviations from the anatomical axis versus 19.4 % in the control group), as well as to determine the degree of deformity and severity of contracture to achieve the most optimal range of motion after endopresthetics (3.2 % versus 8.1 %), however, there was no evidence of a significant superiority of functional results within the indicated follow-up period.

FRONTAL STABILITY OF THE KNEE JOINT AFTER TKA USING A COMPUTER NAVIGATION SYSTEM

2021 ◽  
pp. 102-105
Author(s):  
Mohammad Ali Alqatawneh ◽  
◽  
E. V. Zhuk ◽  
P. I. Bespalchuk ◽  
◽  
...  
Keyword(s):  
Knee Joint ◽  
Navigation System ◽  
Computer Navigation ◽  
Group Versus ◽  
Frontal Plane ◽  
Functional Results ◽  
Control Group ◽  
Stress Tests ◽  
Computer Navigation System ◽  
Navigation Group

The article provides a comparative analysis of the functional results of total knee arthroplasty and knee postoperative stability in the frontal plane in 124 patients (22 men and 102 women) suffering from gonarthrosis, aged 51 to 83 years (average 69.8 years), operated on with using a standard technique (n = 62) or using a computer navigation system (n = 62), observed for 12 months from the moment of surgery. The use of the navigation system made it possible in a number of cases to achieve more accurate resection of the femur and tibia (deviations from the anatomical axis in 6.5 % of cases versus 19.4 % in the control group), as well as to provide the necessary soft tissue tension to achieve the most accurate balance of the knee joint during the entire range of motion after arthroplasty (stress tests founded frontal plain knee instability of the operated knee in 3.2 % cases in navigation group versus 8.1% cases in control group), however, no data on the reliable superiority of the functional results at the indicated follow-up time were found.

Analysis of Implant Alignment and Early Functional Results of Total Knee Replacement Performed Using Computer Navigation System

2009 ◽  
Vol 16 (3) ◽  
pp. 51-55
Author(s):  
Aleksey Ivanovich Petukhov ◽  
N N Kornilov ◽  
T A Kulyaba ◽  
R M Tikhilov ◽  
A V Selin ◽  
...  
Keyword(s):  
Navigation System ◽  
Sagittal Plane ◽  
Computer Navigation ◽  
Group Versus ◽  
Frontal Plane ◽  
Functional Results ◽  
Control Group ◽  
Computer Assisted ◽  
Computer Navigation System ◽  
Implant Alignment

Knee implant alignment analysis and comparative assessment of functional results of 47 total joint replacements with computer navigation system (main group) versus 50 conventional arthroplasties (control group) were performed. Computer assisted system improved the accuracy of limb alignment after knee arthroplasty and reduced the rate of deviations. The position of femoral component in frontal plane and tibial component in sagittal plane showed statistically reliable differences between two groups (p

scholarly journals Early functional results of total knee arthroplasty in patients with alimentary obesity

2018 ◽  
Vol 25 (3-4) ◽  
pp. 30-35
Author(s):  
M. D Helo ◽  
I. F Akhtiamov ◽  
F. M Said ◽  
I. Sh Gilmutdinov ◽  
A. I Yousef ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Pain Syndrome ◽  
Functional Results ◽  
Main Group ◽  
Control Group ◽  
Normal Body Mass Index ◽  
Alimentary Obesity ◽  
Total Knee

Introduction. Total knee replacement has become a standard planned intervention at specialized clinics. The study of surgical results is not as urgent as the follow up of the patients with concomitant pathology because various complications are most often registered in this group. Purpose: to evaluate the efficacy of total knee arthroplasty in patients with increased body mass index at early rehabilitation steps. Patients and methods. Open prospective comparative study included 75 patients with III-IV stages of gonarthrosis by Kellgren-Lawrence. Mean age of the patients made up 63.8±6.87 years. Main group included 48 patients with excessive body mass and alimentary-constitutional obesity of different degree, the control group - 27 patients with normal body mass index. The duration of intervention, volume of blood loss intraoperatively and drainages was assessed. Evaluation of clinical functional results was performed OKS, KSS and visual analog scale (VAS) before surgery, at discharge, 3 months and 1 year after surgical intervention. Results. In comparison to the patients with normal body mass index the patients from the main group showed slightly higher duration of the intervention and intraoperative blood loss - by 13.05% (p=0.027) and 12.8% (p=0.003), respectively. In the main group the severity of pain syndrome by VAS decreased from 90.4±14.4 to 9.6±0.4 mm (p=0.0001), evaluation of clinical functional results by KSS increased from 47.39±1.63 to 88.02±2.01 points, by OKS - from27.3±4.3 to 43.2±6.5 points (p=0.001). In the control group the severity of pain syndrome by VAS within 1 year follow up decreased from 86.2±2.4 to 3.8±0.7 mm (p=0.002) and clinical functional indices by KSS increased from 52.2±10.1 to 93.8±1.3 points (p=0.001), by OKS - from28.4±1.6 to 44.7±1.9 points (p=0,001). Conclusion. The study results demonstrate the high potentialities of arthroplasty in patients with alimentary obesity and confirm the necessity of its performance for the improvement of the patients’ future quality of life.

scholarly journals When can total knee arthroplasty be safely performed following prior arthroscopy?

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Jin-Ning Ma ◽  
Xiao-Lin Li ◽  
Pan Liang ◽  
Sheng-Li Yu
Keyword(s):  
Total Knee Arthroplasty ◽  
Postoperative Complications ◽  
Knee Arthroplasty ◽  
Acl Injury ◽  
Control Group ◽  
Optimal Timing ◽  
Complication Rates ◽  
Increased Risk ◽  
Total Knee

Abstract Background The optimal timing to perform a total knee arthroplasty (TKA) after knee arthroscopy (KA) was controversial in the literature. We aimed to 1) explore the effect of prior KA on the subsequent TKA; 2) identify who were not suitable for TKA in patients with prior KA, and 3) determine the timing of TKA following prior KA. Methods We retrospectively reviewed 87 TKAs with prior KA and 174 controls using propensity score matching in our institution. The minimum follow-up was 2 years. Postoperative clinical outcomes were compared between groups. Kaplan-Meier curves were created with reoperation as an endpoint. Multivariate Cox proportional hazards regressions were performed to identify risk factors of severe complications in the KA group. The two-piecewise linear regression analysis was performed to examine the optimal timing of TKA following prior KA. Results The all-cause reoperation, revision, and complication rates of the KA group were significantly higher than those of the control group (p < 0.05). The survivorship of the KA group and control group was 92.0 and 99.4% at the 2-year follow-up (p = 0.002), respectively. Male (Hazards ratio [HR] = 3.2) and prior KA for anterior cruciate ligament (ACL) injury (HR = 4.4) were associated with postoperative complications in the KA group. There was a non-linear relationship between time from prior KA to TKA and postoperative complications with the turning point at 9.4 months. Conclusion Prior KA is associated with worse outcomes following subsequent TKA, especially male patients and those with prior KA for ACL injury. There is an increased risk of postoperative complications when TKA is performed within nine months of KA. Surgeons should keep these findings in mind when treating patients who are scheduled to undergo TKA with prior KA.

DOES NAVIGATION TOTAL KNEE REPLACEMENT REALLY MAKE A DIFFERENCE?

2013 ◽  
Vol 16 (02) ◽  
pp. 1350007
Author(s):  
P. Motwani ◽  
A. Jariwala ◽  
N. Valentine
Keyword(s):  
Total Knee Replacement ◽  
Tibial Component ◽  
Sagittal Plane ◽  
Computer Navigation ◽  
Component Alignment ◽  
Tibial Component Alignment ◽  
Significant Difference ◽  
Total Knee ◽  
The Mean

Background: Computer Navigation in Total Knee Replacement (TKR) has completed more than a decade since its inception. From that time, numerous studies have been done to see its effect on the variables of surgery and its outcome. Some studies have shown that it is definitely beneficial while others have negated its superiority over conventional techniques. This is an early outcome study on the results of navigation TKR in terms of alignment and clinical outcome at three years post-operatively. Methods: In the present study, 128 patients who had undergone navigation TKR (128 TKR) between January 2006 and November 2009 were included. The navigation system used was orthoPilot®. Patients were assessed post-operatively at one and three year using knee society score (KSS) and knee function score (KFS). All patients completed one year follow-up and 55 patients completed three year follow-up. From 128 patients, 40 navigated TKR patients operated between November 2007 and 2009 and were compared with 40 patients operated by conventional TKR operated between July 2007 and December 2008. Results: The mean KSS at 1 year post-operatively was 85.60 and at 3 years was 85.87. The mean KFS at 1 year post-operatively was 69.30 and at 3 years was 68.00. There was no statistically significant difference between navigation TKR and conventional TKR in terms of anatomical femoro-tibial alignment, femoral component alignment in coronal and sagittal plane and tibial component alignment in coronal plane. However, there was statistically significant difference between tibial component alignment in sagittal plane (p = 0.000) between both the groups. Conclusion: Computer navigation TKR affords a possibility to place both the femoral and tibial component very precisely without the risk of any greater axis deviation from ideal value. It helps in reducing the outliers in alignment of the limb and that of component and that improves the overall implant survival for a long time post-operatively.

scholarly journals Procedure of complex braided wrapping of ascending aorta in her poststenotic dilation while doing correction of aortal stenosis

2020 ◽  
Vol 87 (9-10) ◽  
pp. 18-21
Author(s):  
V. V. Popov ◽  
A. A. Bolshak
Keyword(s):  
Ascending Aorta ◽  
Main Group ◽  
Surgical Correction ◽  
Control Group ◽  
Valve Prosthesis ◽  
Original Procedure ◽  
Aortal Valve ◽  
The Moment ◽  
Aorta Diameter

Objective. To study clinical possibilities of original procedure of the ascending aorta braid-like bandage for her poststenotic dilation while performance of the aortal stenosis surgical correction. Materials and methods. To the main Group 196 patients were included those, who were operated on for prevailing aortal stenosis, conjoined with poststenotic dilation of ascending aorta. In accordance to the echocardiographic investigation data the ascending aorta diameter preoperatively have constituted (47.7 ± 1.7) mm. In all the patients the aortal valve prosthesis was performed together with complex braided wrapping of ascending aorta. Into the control group 121 patients were included, in whom Bentall intervention was accomplished with vascular prosthesis of ascending aorta. Results. Hospital lethality in the main group have constituted 0.5%. Diameter of ascending aorta in the moment of hospital discharge have constituted (39.1 ± 1.5) mm, and in late follow-up period - (40.3 ± 1.1) mm. Conclusion. Basing on clinical experience gained, it is expedient to recommend the original procedure of braided wrapping of ascending aorta in presence of her poststenotic dilation while performing surgical correction of prevailing aortal stenosis.

scholarly journals Accelerometer-Based Navigation in Total Knee Arthroplasty for the Management of Extra-Articular Deformity and Retained Femoral Hardware: Analysis of Component Alignment

Joints ◽  
2019 ◽  
Vol 07 (01) ◽  
pp. 001-007 ◽  
Author(s):  
Andrea Cozzi Lepri ◽  
Matteo Innocenti ◽  
Fabrizio Matassi ◽  
Marco Villano ◽  
Roberto Civinini ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Navigation System ◽  
Lower Limb ◽  
Sagittal Plane ◽  
Frontal Plane ◽  
Control Group ◽  
Navigation Systems ◽  
Level Of Evidence ◽  
Total Knee

Abstract Purpose Recent advances in total knee arthroplasty (TKA) include an accelerometer portable system designed to improve component position and alignment. The purpose of this study is to evaluate whether accelerometer navigation system can be a valuable option in complex TKAs for extra-articular deformity of the lower limb or in case of retained femoral hardware. Methods A group of 13 patients underwent TKA with an accelerometer navigation system. Three patients had a tibial extra-articular deformity, six had a femoral extra-articular deformity, and four had an intramedullary nail in the femur. Preoperative and postoperative mechanical axes were measured from full-length lower extremity radiographs to evaluate alignment. The alignment of prosthetic components in the frontal and sagittal planes was determined by postoperative radiographs. Results At 30-days postoperative radiographic check, the hip knee ankle angle was within 2.0° (0 ± 1) of the neutral mechanical axis. The alignment of the tibial component on the frontal plane was 90.0° (range 89–91) and on the sagittal plane 5.0° (range 3–7). The alignment of the femoral component on the frontal plane was 90.0° (range 89–91) and on the sagittal plane 3.0° (range 0–5). Conclusion The alignment of the prosthetic components has been accurate and comparable to other navigation systems in literature without any increase in surgical times. The accelerometer-based navigation system is therefore a useful technique that can be used to optimize TKA alignment in patients with extra-articular deformity or with lower limb hardware, where the intramedullary guides cannot be applied. Level of Evidence This is an observational study without a control group, Level III.

scholarly journals Pigmented villonodular synovitis does not influence the outcomes following cruciate-retaining total knee arthroplasty: a case-control study with minimum five year follow-up

2020 ◽  
Author(s):  
Wei Lin ◽  
Yike Dai ◽  
Jinghui Niu ◽  
Guangmin Yang ◽  
Ming Li ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Society Score ◽  
Pigmented Villonodular Synovitis ◽  
Control Group ◽  
Villonodular Synovitis ◽  
Cruciate Retaining ◽  
Total Knee ◽  
Pigmented Villonodular

Abstract Background: Pigmented villonodular synovitis (PVNS) is a rare synovial disease with benign hyperplasia, which has been successfully treated with total knee arthroplasty (TKA). The purpose of this study was to investigate the middle-term follow-up outcomes of cruciate-retaining (CR) TKA in patients with PVNS.Methods: From January 2012 to December 2014, a retrospective study was conducted in 17 patients with PVNS who underwent CR TKA as PVNS group. During this period, we also selected 68 patients with osteoarthritis who underwent CR TKA (control group) for comparison. The two groups matched in a 1:4 ratio based on age, sex, body mass index and follow-up time. The range of motion, Knee Society Score, revision rate, disease recurrence, wound complications and the survivorship curve of Kaplan-Meier implant were assessed between the two groups.Results: All patients were followed up at least five years. There were no difference in range of motion, and Knee Society Score between the two groups before surgery and at last follow-up after surgery (p > 0.05). In the PVNS group, no patients with the recurrence of PVNS were found at the last follow-up, one patient underwent revision surgery due to periprosthetic fracture, and three patients had stiffness one year after surgery (17.6% vs 1.5%, p = 0.005; ROM:16°- 81°), but no revision was needed. At seven years, the implant survivorship was 90.0% in the PVNS group and 96.6% in the control group (p = 0.54).Conclusions: This study demonstrated that the function of patients with PVNS who underwent CR TKA had been significantly improved, and the survival rate of implants in these patients were similar to the patients with OA. Consequently, the patients with PVNS who underwent CR TKA might be an achievable option. However, these patients should pay more attention to the occurrence of postoperative stiffness complication.

scholarly journals Accuracy and a learning curve of an accelerometer-based computer navigation system in total knee arthroplasty

10.29007/dqdm ◽  
2019 ◽  
Author(s):  
Hirotake Yo ◽  
Tessyu Ikawa ◽  
Yoshito Minami
Keyword(s):  
Total Knee Arthroplasty ◽  
Learning Curve ◽  
Navigation System ◽  
Computer Navigation ◽  
Operation Time ◽  
Primary Tkas ◽  
Portable Navigation ◽  
Distal Femoral Resection ◽  
Total Knee ◽  
Femoral Resection

The aim of this study was to investigate the accuracy in performing a femoral resection and the existence of a learning curve in conducting TKA using the KneeAlign2 system. 86 primary TKAs were enrolled in this prospective study. These patients were divided in two groups.Group1: patients operated by surgeon of experience using the KneeAlign2 system more than 30 cases.Group2: patients operated by surgeons of experience using the KneeAlign2 system less than 30 cases. The radiographic results (alignment of the femoral component) and operation time were compared between the groups. There were no significant differences between the groups .The KneeAlign2 system provides usefulness in performing an accurate distal femoral resection at TKA. As the learning curve does not be observed, this portable navigation system is easy to handle even for less experienced surgeons.

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