scholarly journals Intraoperative Midflexion Medial Laxity Affects Patient Expectations Following Total Knee Arthroplasty

2021 ◽  
Author(s):  
Masahiro Hasegawa ◽  
Shine Tone ◽  
Yohei Naito ◽  
Akihiro Sudo
Keyword(s):  
Total Knee Arthroplasty ◽  
Patient Satisfaction ◽  
Knee Arthroplasty ◽  
Functional Activity ◽  
Outcome Measure ◽  
Patient Expectations ◽  
Affected Patient ◽  
Posterior Stabilized ◽  
Total Knee ◽  
The Mean

Abstract Background: Patient satisfaction and expectations are now recognized as an outcome measure for successful total knee arthroplasty (TKA). The purpose of this study was to determine which factors including soft tissue balance during surgery affect patient satisfaction and expectations after TKA.Methods: A total of 135 patients (157 knees) with knee osteoarthritis who underwent primary TKA with a posterior stabilized design were studied. After implantation of all components, varus/valgus laxity of the knee was measured intraoperatively with the knee at 0°, 30°, 60°, 90°, and 120° guided by an image-free navigation system. Factors that affected patient satisfaction and expectations, including lateral and medial laxities, were evaluated using the 2011 Knee Society score.Results: The mean intraoperative lateral laxity was 1.1°, 1.6°, 0.9°, 1.3°, and 1.7° with the knee at 0°, 30°, 60°, 90°, and 120°, respectively. The mean intraoperative medial laxity was 1.1°, 1.4°, 1.1°, 1.1°, and 1.7° with the knee at 0°, 30°, 60°, 90°, and 120°, respectively. Patient satisfaction after TKA correlated positively with symptom (R = 0.61, P < 0.01) and functional activity (R = 0.47, P < 0.01) scores. Patient expectations after TKA correlated positively with symptom (R = 0.29, P < 0.01) and functional activity (R = 0.20, P = 0.01) scores, and negatively with medial laxity at 30° (R = -0.21, P < 0.01).Conclusion: Midflexion medial laxity was associated with worse patient expectations after TKA. Avoiding medial laxity could be one of the important techniques during TKA.

Total knee arthroplasty after distal femoral osteotomy long-term survivorship and clinical outcomes

2019 ◽  
Vol 101-B (6) ◽  
pp. 660-666 ◽  
Author(s):  
B. P. Chalmers ◽  
A. K. Limberg ◽  
A. G. Athey ◽  
K. I. Perry ◽  
M. W. Pagnano ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Clinical Outcome ◽  
Aseptic Loosening ◽  
Femoral Component ◽  
Knee Arthroplasty ◽  
Femoral Osteotomy ◽  
Posterior Stabilized ◽  
Distal Femoral Osteotomy ◽  
Total Knee ◽  
The Mean

Aims There is little literature about total knee arthroplasty (TKA) after distal femoral osteotomy (DFO). Consequently, the purpose of this study was to analyze the outcomes of TKA after DFO, with particular emphasis on: survivorship free from aseptic loosening, revision, or any re-operation; complications; radiological results; and clinical outcome. Patients and Methods We retrospectively reviewed 29 patients (17 women, 12 men) from our total joint registry who had undergone 31 cemented TKAs after a DFO between 2000 and 2012. Their mean age at TKA was 51 years (22 to 76) and their mean body mass index 32 kg/m2 (20 to 45). The mean time between DFO and TKA was ten years (2 to 20). The mean follow-up from TKA was ten years (2 to 16). The prostheses were posterior-stabilized in 77%, varus-valgus constraint (VVC) in 13%, and cruciate-retaining in 10%. While no patient had metaphyseal fixation (e.g. cones or sleeves), 16% needed a femoral stem. Results The ten-year survivorship was 95% with aseptic loosening as the endpoint, 88% with revision for any reason as the endpoint, and 81% with re-operation for any reason as the endpoint. Three TKAs were revised for instability (n = 2) and aseptic tibial loosening (n = 1). No femoral component was revised for aseptic loosening. Patients under the age of 50 years were at greater risk of revision for any reason (hazard ratio 7; p = 0.03). There were two additional re-operations (6%) and four complications (13%), including three manipulations under anaesthetic (MUA; 10%). The Knee Society scores improved from a mean of 50 preoperatively (32 to 68) to a mean of 93 postoperatively (76 to 100; p < 0.001). Conclusion A cemented posterior-stabilized TKA has an 88% ten-year survivorship with revision for any reason as the endpoint. No femoral component was revised for aseptic loosening. Patients under the age of 50 years have a greater risk of revision. The clinical outcome was significantly improved but balancing the knee was challenging in 13% of TKAs requiring VVC. Overall, 10% of TKAs needed an MUA, and 6% of TKAs were revised for instability. Cite this article: Bone Joint J 2019;101-B:660–666.

scholarly journals Patient Satisfaction Outcomes after Robotic Arm-Assisted Total Knee Arthroplasty: A Short-Term Evaluation

2017 ◽  
Vol 30 (09) ◽  
pp. 849-853 ◽  
Author(s):  
Robert Marchand ◽  
Nipun Sodhi ◽  
Anton Khlopas ◽  
Assem Sultan ◽  
Steven Harwin ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Patient Satisfaction ◽  
Physical Function ◽  
Knee Arthroplasty ◽  
Robotic Arm ◽  
Short Term ◽  
Patient Satisfaction Score ◽  
Total Patient ◽  
Total Knee ◽  
The Mean

AbstractRobotic arm-assisted total knee arthroplasty (RATKA) presents a potential, new added value for orthopedic surgeons. In today's health care system, a major determinant of value can be assessed by patient satisfaction scores. Therefore, the purpose of the study was to analyze patient satisfaction outcomes between RATKA and manual total knee arthroplasty (TKA). Specifically, we used the Western Ontario and McMaster Universities Arthritis Index (WOMAC) to compare (1) pain scores, (2) physical function scores, and (3) total patient satisfaction outcomes in manual and RATKA patients at 6 months postoperatively. In this study, 28 cemented RATKAs performed by a single orthopedic surgeon at a high-volume institution were analyzed. The first 7 days were considered as an adjustment period along the learning curve. Twenty consecutive cemented RATKAs were matched and compared with 20 consecutive cemented manual TKAs performed immediately. Patients were administered a WOMAC satisfaction survey at 6 months postoperatively. Satisfaction scores between the two cohorts were compared and the data were analyzed using Student's t-tests. A p-value < 0.05 was used to determine statistical significance. The mean pain score, standard deviation (SD), and range for the manual and robotic cohorts were 5 ± 3 (range: 0–10) and 3 ± 3 (range: 0–8, p < 0.05), respectively. The mean physical function score, SD, and range for the manual and robotic cohorts were 9 ± 5 (range: 0–17) and 4 ± 5 (range, 0–14, p = 0.055), respectively. The mean total patient satisfaction score, SD, and range for the manual and robotic cohorts were 14 points (range: 0–27 points, SD: ± 8) and 7 ± 8 points (range: 0–22 points, p < 0.05), respectively. The results from this study further highlight the potential of this new surgical tool to improve short-term pain, physical function, and total satisfaction scores. Therefore, it appears that patients who undergo RATKA can expect better short-term outcomes when compared with patients who undergo manual TKA.

scholarly journals TOTAL KNEE ARTHROPLASTY;

2017 ◽  
Vol 24 (09) ◽  
pp. 1403-1408
Author(s):  
Faisal Abdul Jabbar ◽  
Rehana Ali Shah ◽  
Muhammad Hashim
Keyword(s):  
Total Knee Arthroplasty ◽  
Patient Satisfaction ◽  
Knee Arthroplasty ◽  
Tertiary Care ◽  
Osteoarthritis Of The Knee ◽  
Care Hospital ◽  
Level Of Satisfaction ◽  
Significant Difference ◽  
Total Knee ◽  
The Mean

Objectives: We aim to evaluate the level of satisfaction after total knee arthroplastyprocedure in the patient population at a tertiary care hospital in Karachi, Pakistan, and to assessthe relationship between patient satisfaction and the outcome based on traditional scores.Methods: Study Design: Case series for determination of patient satisfaction. Period: Oneyear duration from April 2015 to May 2016. Setting: Tertiary care centre in Karachi, Pakistan.The inclusion criteria was all the patients with late stage osteoarthritis of the knee joint andunderwent total knee arthroplasty at our institute. Data was analyzed using SPSS version 22.Results: A total of n= 102 patients were included in the study while n= 109 knee surgerieswere done in total (n= 95 patients had unilateral surgery, while n= 7 patients had bilateralsurgeries on both the knee joints) n= 58 patients were females while n= 44 patients weremales, the median age was 60 years, patients had a mean body mass index (BMI) of 27kg/m2. Of the total surgeries performed n= 100 were in the satisfaction group while n= 9 were inthe dissatisfaction group. The majority of the patients reported that they would recommend theprocedure. The co morbid conditions did not affect the patient’s level of satisfaction having ap value of 0.678. In the dissatisfied group, there was no significant difference when it comes togender, the mean age of patients in the dissatisfaction group was higher than the mean age ofpatients in the satisfaction. We found that WOMAC scores for functioning and the final WOMACscores were correlated with patient satisfaction and that was statistically significant, similarlySF-36 form patients were satisfied about the improvement in the physical health while they didnot improve the mental health aspect of their disease. Conclusion: According to our studytotal knee arthroplasty is an effective treatment for osteoarthritis of the knee, patient satisfactionis correlated with post-operative WOMAC function and overall scores, and SF-36 physicalcomponent. It is important to keep patients expectations in check through proper counseling.

scholarly journals Higher treatment effect after total knee arthroplasty is associated with higher patient satisfaction

2020 ◽  
Author(s):  
Jörg Lützner ◽  
Franziska Beyer ◽  
Klaus-Peter Günther ◽  
Jörg Huber
Keyword(s):  
Total Knee Arthroplasty ◽  
Patient Satisfaction ◽  
Knee Arthroplasty ◽  
Treatment Effect ◽  
Treatment Effects ◽  
Oxford Knee Score ◽  
Individual Treatment ◽  
Total Knee ◽  
The Mean ◽  
One Year

Abstract Purpose The aim of this study was to investigate what influence the treatment effect after total knee arthroplasty (TKA) had on patient satisfaction. Methods Prospective registry data of a University-based arthroplasty centre were used. 582 patients with unilateral bicondylar TKA were analyzed. Treatment effect (TE) was deduced from Oxford Knee Score (OKS) before and one year after surgery. Positive values correspond to improved symptoms (maximum 1.0 reflect no symptoms at all) and negative values correspond to deterioration of symptoms. Satisfaction on a visual-analogue scale from 0 to 10 and the willingness to undergo TKA surgery again was assessed one year after surgery. Results The mean OKS improved from 22.1 before to 36.7 one year after TKA. Treatment effects ranged from 1.0 to –0.62 with a mean TE of 0.56. Taking an individual treatment effect of 0.2 as a cut-off between responder and non-responder, a total of 85.8% would be classified as responder after TKA. The mean satisfaction score with the TKA was 8.1. There was a significant correlation between the individual treatment effect and satisfaction after TKA (p < 0.001). The majority of patients (84.5%) would undergo surgery again. Patients not willing to undergo surgery again or those uncertain about this had lower satisfaction scores, a lower treatment effect and were more often female compared to patients who would undergo surgery again. Conclusion Higher individual treatment effects resulted in higher patient satisfaction and willingness to undergo surgery again. However, some patients with a relatively low treatment effect were highly satisfied, which indicates the need for both information. Level of evidence II.

scholarly journals Comparison of Patient Satisfaction Between Medial Pivot Prostheses and Posterior‐Stabilized Prostheses in Total Knee Arthroplasty

2020 ◽  
Vol 12 (3) ◽  
pp. 836-842 ◽  
Author(s):  
Yuanyuan Lin ◽  
Xueyan Chen ◽  
Li Li ◽  
Zhenxing Li ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Patient Satisfaction ◽  
Knee Arthroplasty ◽  
Posterior Stabilized ◽  
Medial Pivot ◽  
Total Knee

Revision Total Knee Arthroplasty Using a Constrained Condylar Knee Prosthesis Combined with a Posterior Stabilized Articular Surface

2017 ◽  
Vol 31 (02) ◽  
pp. 197-201
Author(s):  
Shang-Wen Tsai ◽  
Cheng-Fong Chen ◽  
Po-Kuei Wu ◽  
Chao-Ming Chen ◽  
Wei-Ming Chen
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Prosthesis ◽  
Articular Surface ◽  
Womac Score ◽  
Revision Total Knee Arthroplasty ◽  
Functional Score ◽  
Posterior Stabilized ◽  
Total Knee ◽  
The Mean

AbstractIntraoperative assessment of valgus–varus stability is crucial for choosing articular surfaces with different levels of constraint. Legacy constrained condylar knee (CCK) prostheses are readily available to assemble and use with a CCK articular surface or a posterior stabilized (PS) articular surface in revision knee arthroplasty surgeries. We wanted to validate outcomes of revision total knee arthroplasty (TKA) using legacy CCK prostheses combined with a PS articular surface. Thirty-seven patients were enrolled and followed up for more than 2 years. Range of motion (ROM), the Knee Society score (KSS), the Knee Society functional score (KSS-F), and the Western Ontario and McMaster Universities Arthritis Index (WOMAC) were used to evaluate outcomes. Follow-up was a mean of 86.5 months (range: 28–152 months). The mean age of the participants was 69.8 years (range: 31–86 years). The mean ROM was 110.5 degrees, the KSS was 86.2 points, the KSS-F was 68.3 points, and the WOMAC score was 22.6 points. Seven participants had implant failures: five because of delayed infections and two because of posterior dislocations. In conclusion, revision TKA using a CCK prosthesis combined with a PS articular surface might provide satisfactory mid-term outcomes. Delayed infection was the most common cause of implant failure. Dislocation might occur in middle-old or older patients despite careful intraoperative examination of valgus–varus stability, extension–flexion gap balancing, and signs of recurvatum.

Effect of Manipulation under Anesthesia of the First Knee in Staged Bilateral Total Knee Arthroplasty on Clinical Outcome and Satisfaction

2020 ◽  
Author(s):  
Jung-Won Lim ◽  
Yong-Beom Park ◽  
Dong-Hoon Lee ◽  
Han-Jun Lee
Keyword(s):  
Total Knee Arthroplasty ◽  
Patient Satisfaction ◽  
Clinical Outcome ◽  
Clinical Outcomes ◽  
Knee Arthroplasty ◽  
Knee Flexion ◽  
Functional Score ◽  
Manipulation Under Anesthesia ◽  
Total Knee

AbstractThis study aimed to evaluate whether manipulation under anesthesia (MUA) affect clinical outcome including range of motion (ROM) and patient satisfaction after total knee arthroplasty (TKA). It is hypothesized that MUA improves clinical outcomes and patient satisfaction after primary TKA. This retrospective study analyzed 97 patients who underwent staged bilateral primary TKA. MUA of knee flexion more than 120 degrees was performed a week after index surgery just before operation of the opposite site. The first knees with MUA were classified as the MUA group and the second knees without MUA as the control group. ROM, Knee Society Knee Score, Knee Society Functional Score, Western Ontario and McMaster Universities (WOMAC) score, and patient satisfaction were assessed. Postoperative flexion was significantly greater in the MUA group during 6 months follow-up (6 weeks: 111.6 vs. 99.8 degrees, p < 0.001; 3 months: 115.9 vs. 110.2 degrees, p = 0.001; 6 months: 120.2 vs. 117.0 degrees, p = 0.019). Clinical outcomes also showed similar results with knee flexion during 2 years follow-up. Patient satisfaction was significantly high in the MUA group during 12 months (3 months: 80.2 vs. 71.5, p < 0.001; 6 months: 85.8 vs. 79.8, p < 0.001; 12 months: 86.1 vs. 83.9, p < 0.001; 24 months: 86.6 vs. 85.5, p = 0.013). MUA yielded improvement of clinical outcomes including ROM, and patient satisfaction, especially in the early period after TKA. MUA in the first knee could be taken into account to obtain early recovery and to improve patient satisfaction in staged bilateral TKA.

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