scholarly journals Is Immediate Postoperative Mechanical Axis Associated with the Revision Rate of Primary Total Knee Arthroplasty? A 10-Year Follow-up Study

2018 ◽  
Vol 10 (2) ◽  
pp. 167 ◽  
Author(s):  
Ju-Kwon Park ◽  
Jong-Keun Seon ◽  
Kyu-Jin Cho ◽  
Nam-Hoon Lee ◽  
Eun-Kyoo Song
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Mechanical Axis ◽  
Revision Rate ◽  
Primary Total Knee Arthroplasty ◽  
Follow Up Study ◽  
Total Knee ◽  
Primary Total Knee

Primary total knee arthroplasty using the Genesis I total knee prosthesis: A 5- to 10-year follow-up study

The Knee ◽  
2005 ◽  
Vol 12 (5) ◽  
pp. 341-345 ◽  
Author(s):  
Yoshinori Ishii ◽  
Yoshikazu Matsuda ◽  
Shigeo Sakata ◽  
Naoaki Onda ◽  
Go Omori
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Prosthesis ◽  
Primary Total Knee Arthroplasty ◽  
Total Knee Prosthesis ◽  
Follow Up Study ◽  
Total Knee ◽  
Primary Total Knee

scholarly journals The effect of postoperative mechanical axis alignment on the revision rate of primary total knee arthroplasty after a follow up of 10 years

10.29007/3c7w ◽  
2018 ◽  
Author(s):  
Eun-Kyoo Song ◽  
Jongkeun Seon ◽  
Dong-Hyun Lee ◽  
Je-Hyoung Yeo
Keyword(s):  
Total Knee Arthroplasty ◽  
Clinical Outcomes ◽  
Knee Arthroplasty ◽  
Mechanical Axis ◽  
Revision Rate ◽  
Primary Total Knee Arthroplasty ◽  
Outlier Group ◽  
Primary Tkas ◽  
Total Knee

The purpose of this study is to evaluate the effect of postoperative mechanical alignment on clinical outcomes and revision rate by comparing acceptable mechanical axis group from neutral and an outlier mechanical axis.Between 2000 and 2006, clinical and radiographic data of 334 primary TKAs were retrospectively reviewed. Post-operative mechanical axis was investigated within 1 month after TKA. The first group was an acceptable group of 286 knees (85.6%, with mechanical axis of 0°±3°). The second group was an outlier group of 48 knees (14.4%, with mechanical axis of beyond 0°±3°). Clinical outcomes before surgery and at the final follow up were analyzed using scoring method such as Hospital for Special Surgery, Knee Society Score, and Western Ontario & McMaster Universities Osteoarthritis Index (WOMAC) score. Radiologic outcomes including changes of mechanical axis between immediate postop and last follow-up were evaluated. Postoperative complications and revision rates were also evaluated.The mean degrees in change of mechanical axis between immediate postop and last follow-up were greater in the outlier group (1.6°±2.7) than acceptable group (0.8°±2.4). No significance difference in clinical outcome was found between the two groups. The incidence of aseptic loosening, instability, polyethylene wear, polyethylene breakage, and periprosthetic fracture was 2/4/2/2/2 each in the acceptable group and 1/1/2/0/0 each in the outlier group. Six (2.1%) of 286 in the acceptable group and 4 (8.3%) of 48 in the outlier group were revised (p=0.04). The Kaplan-Meier survival analysis showed a tendency towards improved survival with restoration of neutral mechanical axis. However, such improvement was not statistically significant (p=0.25).Restoration of neutral limb alignment is a factor of total knee arthroplasty that can result in less revision rate and higher longevity. However, there are no significant differences in clinical outcomes between the two groups.

Routine Histopathological Analysis of the Synovium in Patients with Primary Total Knee Arthroplasty

2020 ◽  
Vol 34 (01) ◽  
pp. 115-120
Author(s):  
Ali Utkan ◽  
Emrah Caliskan ◽  
Batuhan Gencer ◽  
Bulent Ozkurt
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Oxford Knee Score ◽  
Primary Total Knee Arthroplasty ◽  
Histopathological Analysis ◽  
Knee Score ◽  
Total Knee ◽  
The Mean ◽  
Primary Total Knee

AbstractAlthough there are numerous studies about routine histopathological analysis during arthroplasty surgeries, most of them showed that new diagnoses have rarely been obtained as a result. The aim of this study was to evaluate the efficacy of routine pathological analyses of synovia resected during primary total knee arthroplasty in patients with osteoarthritis and its relevance in the treatment process. Of the 47 included patients who were followed up prospectively, 26 patients had clinical and histopathological concordant diagnoses and 21 patients had discrepant diagnoses. Oxford knee score and visual analogue score were performed for all the patients. Kallgren-Lawrence score was used for radiological analyses. The Mann-Whitney U test was used to examine the differences between the abnormally distributed variables. Mean age was 65.9 ± 4.3 years (range, 50–89 years) and mean follow-up time was 19 ± 7.8 months (range, 6–39 months). Grade IV gonarthrosis was found to be statistically lower in the discrepant group (p = 0.046). The mean preoperative Oxford knee score was 16.8 ± 2.3 (range, 2–23) and the mean postoperative Oxford knee score was 44.6 ± 1.8 (range, 27–48; p = 0.016). Postoperative Oxford knee scores and VAS were significantly increased in both the concordant and discrepant groups (p = 0.026 and p = 0.035, p = 0.019 and p = 0.039, respectively). Resection and histopathologic analyses of the hypertrophied and inflamed synovium encountered during primary arthroplasty procedure should be performed. This examination not only could provide crucial information that may influence the postoperative follow-up guidelines but also could help us to expand our knowledge and awareness of rare diseases that might yield osteoarthritis. The level of evidence for the study is level II.

scholarly journals Early outcomes of posterior cruciate retaining primary total knee arthroplasty in patients of osteoarthritis in Indian population

2018 ◽  
Vol 4 (3) ◽  
pp. 463
Author(s):  
Sunil Kumar Dash ◽  
Sanket Mishra ◽  
Sumanyu Tripathy ◽  
Manish Sharma ◽  
Aurobinda Das
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Indian Population ◽  
Primary Total Knee Arthroplasty ◽  
Walking Distance ◽  
Cruciate Retaining ◽  
Functional Parameters ◽  
Total Knee ◽  
Primary Total Knee

<p class="abstract"><strong>Background:</strong> Total knee replacement arthroplasty today has become the final treatment option for patients with unsalvageable, severely arthritic, painful and deformed knees. In India the numbers of such surgeries are steadily on the rise with bulk of the patients being relatively younger group. Amongst several factors affecting the kinematics of knee, variations in surface geometry and the retention or sacrificing the posterior cruciate ligament is considered especially important. The role of the retaining a PCL on the demographic, clinical and functional parameters of a patient undergoing TKA remains controversial. The aim of the study was to evaluate the outcomes of cruciate retaining primary total knee arthroplasty in patients of osteoarthritis in relation to demographic, clinical and functional parameters.</p><p class="abstract"><strong>Methods:</strong> 20 knees from 12 patients of osteoarthritis including 8 females and 4 males in age group 45-80 years were operated with cruciate retaining implants. The pre and postoperative evaluations were done radiologicaly and clinically using new knee society score. Patients were followed up for minimum 1 year.<strong></strong></p><p class="abstract"><strong>Results:</strong> evaluations of patients revealed good postoperative improvements at subsequent follow up in comparison to preoperative scores. The average range of movement improved by 43.3 degree. The objective, patients satisfaction and functional score improved with scores of 89, 34 and 89.7 at 1 year follow up. The walking distance and staircase climbing, squatting scores also did well. Age did not seem to affect overall outcomes with males having slightly better postoperative scoring overall.</p><p class="abstract"><strong>Conclusions:</strong> In Indian population when the patient is young, high demanding, the retention of cruciate ligaments gives excellent postoperative functionality and objectivity and should be always considered as first choice surgery.</p>

Early Clinical and Radiological Outcomes of the Metaphyseally Fixed Totally Stabilized Knee Prosthesis in Primary Total Knee Arthroplasty

2019 ◽  
Vol 33 (07) ◽  
pp. 678-684 ◽  
Author(s):  
Fahad Hossain ◽  
Sujith Konan ◽  
Babar Kayani ◽  
Christina Kontoghiorghe ◽  
Toby Barrack ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Prosthesis ◽  
Oxford Knee Score ◽  
Primary Total Knee Arthroplasty ◽  
Primary Tkas ◽  
Total Knee ◽  
The Mean ◽  
Primary Total Knee

AbstractThe use of valgus–varus constrained (VVC) implant designs in primary total knee arthroplasty (TKA) is considered in situations of severe deformities, bone loss, and inadequate soft tissue balance. It is not known whether the use of such prosthesis designs may predispose to reduced function owing to its constraining design. The components are usually implanted with diaphyseal stem extensions to dissipate the increased forces. The totally stabilized (TS) implant is a contemporary VVC design with metaphyseal fixation only. It has a conforming articulation with increased rotational freedom compared with conventional VVC designs. The aim of this study was to assess whether the use of the contemporary TS implant with its metaphyseally fixed components would be associated with inferior outcomes compared with conventional standard primary posterior stabilized (PS) implants. We reviewed 38 consecutive complex primary TKAs performed using the metaphyseally fixed TS implant and 76 matched patients receiving primary PS TKA, at a minimum follow-up of 24 months. The mean follow-up was 61.1 months (24–102). Only patients with osteoarthritis were included. Clinical outcome was assessed using range of motion (ROM) and Oxford knee score (OKS). Radiographic assessment was performed using the femorotibial angle (FTA) at 6 weeks followed by assessment of bone–implant interface lucencies at final follow-up. There were no major early postoperative complications. The mean postoperative ROM in the TS and PS groups were 114.1 and 112.0, respectively. There was no difference in the mean ROM and OKS between the two groups. The mean FTA for patients in both groups was within 3° of the expected. There was no evidence of progressive lucencies or implant migration at final follow-up. The metaphyseally fixed TS knee design achieves comparable short-term functional outcomes when compared with conventional PS designs in primary knee arthroplasty. Long-term follow-up studies are required to assess survivorship.

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