scholarly journals Midterm Results of a New Rotating Hinge Knee Implant: A 5-Year Follow-Up

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Christoph Böhler ◽  
Paul Kolbitsch ◽  
Reinhard Schuh ◽  
Richard Lass ◽  
Bernd Kubista ◽  
...  
Keyword(s):  
Oxford Knee Score ◽  
Functional Results ◽  
Midterm Results ◽  
Tissue Quality ◽  
Joint Infections ◽  
Rotating Hinge ◽  
Total Knee ◽  
Rotating Hinge Knee ◽  
Primary Implantation

Background. In the current study, we investigated midterm results of a new rotating hinge total knee arthroplasty (EnduRo prosthesis), which uses a new bearing material (CFR PEEK). Methods. We prospectively analysed data of 50 patients with a minimum follow-up of 5 years. In 24 (48%) patients, a primary implantation was performed and 26 (52%) were revision cases. Clinical and radiographic examinations were performed preoperatively as well as postoperatively after 3 and 12 months and annually thereafter. The Knee Society Score (KSS), WOMAC, Oxford Knee Score (OKS), and range of motion (ROM) were used for clinical assessment. Results. KSS, WOMAC, OKS, and ROM significantly improved between the preoperative and the follow-up investigations. The overall survival rate with revision for any reason as an endpoint was 77.9% after five years. The number of complications was significantly higher in the revision group (p=0.003). Conclusion. The EnduRo prosthesis provides highly satisfying clinical and functional results in severe primary as well as in revision cases. Implant-associated complications were rare. However, in cases of revision surgery, the risk for complications was considerably high, mostly related to previous joint infections and poor soft tissue quality.

scholarly journals Mid-term results after implantation of rotating-hinge knee prostheses: primary versus revision

2012 ◽  
Vol 4 (4) ◽  
pp. 35 ◽  
Author(s):  
Turgay Efe ◽  
Philip P. Roessler ◽  
Thomas J. Heyse ◽  
Carsten Hauk ◽  
Caroline Pahrmann ◽  
...  
Keyword(s):  
Knee Prosthesis ◽  
Survival Rates ◽  
Functional Results ◽  
Clinical Results ◽  
Knee Prostheses ◽  
Kaplan Meier ◽  
Rotating Hinge ◽  
Rotating Hinge Knee ◽  
Primary Implantation

The aim of the study was to evaluate the mid-term clinical results and survivorship of a rotating-hinge knee prosthesis (LINK® Endo-Model) in difficult primary and complex revision situations. Results after primary implantation were compared with those of revision procedures. Forty-nine prostheses in 45 patients were reviewed clinically during follow up. Twenty-one of these were implanted in primary and 28 in revision situations. Outcome was evaluated using commonly used scores (Knee Society, UCLA Activity, Lequesne) and a visual analog scale after a mean follow up of 56±37 months for 49 prostheses. Implant survival was analyzed using the Kaplan-Meier method. There were no significant differences in clinical examination and evaluation scores between the two groups (P>0.05). Survival rates at final follow up were 95% after primary implantation and 76% in revision procedures. The risk of prosthesis loss (odds ratio 5.7) was significantly higher after revision procedures (P=0.004). These data suggest that rotating-hinge knee prostheses provided good clinical and functional results in selected cases of advanced primary gonarthrosis associated with severe bone loss, ligamentous instability or comminuted fractures. They also provide good results in revision situations. However, the failure rate was significantly higher in cases of revision surgery.

The Management of Extensive Bone Loss in Primary and Revision Total Knee Replacement

2012 ◽  
Vol 12 (1) ◽  
pp. 32-35
Author(s):  
Silvestris Zebolds ◽  
Valdis Goncars ◽  
Ints Zommers ◽  
Konstantins Kalnberzs
Keyword(s):  
Bone Loss ◽  
Total Knee Replacement ◽  
Knee Society Score ◽  
Oxford Knee Score ◽  
Functional Results ◽  
Knee Score ◽  
Patients Satisfaction ◽  
Satisfaction Rate ◽  
Rotating Hinge ◽  
Total Knee

SummaryIntroduction.Total knee replacement (TKR) is still a challenging procedure for severe gonarthrosis patients. Deformities of knee joint (varus, valgus - more than 30 degrees), insufficiency of collateral ligaments and extensive bone loss could be a difficult problem to solve with standard knee endoprosthesis. Also in cases of revision - TKR the restoration of bone loss and regaining of stability of the joint could be a problem.Aim of the Study.The aim of our study was to analyse the results with Rotating - Hinge prosthesis after severe primary and revision TKR.Materials and Methods.34 patients (27 female, 7 male) were treated with Rotating - Hinge prosthesis during 12 years (first in 1997). Mean age of patients were 69 years. 17 operations were primary total knee arthroplasties and also 17 were revisions of the knee prosthesis. The Oxford Knee score was used for evaluation of patients satisfaction rate. The Knee Society Score was used to get objective functional results. For radiological analysis X-rays of knee joint in two projections were performed.Results.34 Oxford Knee score questionnaires were sent to patients, response we got from 27 patients (79%). Mean result from Oxford Knee score was 32 which is good. The same number of patients (34) were invited for examination using Knee Society score. The response were from 20 patients (59%). Mean result from Knee Society score was 83, which means excellent.Conclusions.Rotating-Hinge prosthesis allows to achieve good and excellent functional results and high patients satisfaction rate after severe primary and revision TKR. The biological age, general health condition, insufficiency of ligaments and previous infection in patients history have to be considered for choosing the tactics for each case.

scholarly journals Irreducible Posterolateral Fracture Dislocation of the Knee in an Elderly Patient Treated with Rotating Hinge Total Knee Replacement

Joints ◽  
2021 ◽  
Author(s):  
Gabriele Bernardi ◽  
Maria Teresa Manisera ◽  
Alexander Vallone ◽  
Cosimo Tudisco
Keyword(s):  
Knee Replacement ◽  
Soft Tissues ◽  
Rare Condition ◽  
Knee Dislocation ◽  
Joint Space ◽  
Fracture Dislocation ◽  
Rotating Hinge ◽  
Total Knee ◽  
Rotating Hinge Knee

AbstractKnee dislocation is one of the few real orthopaedic emergencies. It is a serious but relative uncommon injury, representing less than 0.02% of all orthopaedic injuries. Especially posterolateral knee dislocation is much rarer condition that is often missed or misdiagnosed. The main feature of this very rare condition is to be irreducible by closed reduction due to the interposition of soft tissues inside the enlarged medial joint space, such as the medial capsule and retinaculum, vastusmedialis, and medial meniscus. The pathognomonic sign of a posterolateral knee dislocation is the anteromedial distal thigh transverse “pucker” or “dimple sign.” We report the case of an 87-year-old man who sustained an irreducible posterolateral fracture dislocation of the knee after being hit by car which has been treated with rotating hinge knee replacement with 1-year of follow-up.

Midterm results of a new personalized knee implant for total knee arthroplasty: implant survivorship and patient-reported outcome after five years’ follow-up

2021 ◽  
Author(s):  
Cristina Dauder Gallego ◽  
Irene Blanca Moreno Fenoll ◽  
José Luis Patiño Contreras ◽  
Francisco Javier Moreno Coronas ◽  
María del Carmen Torrejón de la Cal ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Patient Reported Outcome ◽  
Midterm Results ◽  
Implant Survivorship ◽  
Patient Reported ◽  
Total Knee

scholarly journals A case of an atraumatic implant failure after primary rotating-hinge total knee arthroplasty

2021 ◽  
Vol 87 (3) ◽  
pp. 449-451
Author(s):  
Lucas Petitqueux ◽  
Karen Verhulst ◽  
Jan Dauwe ◽  
Dirk Dauwe
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Medical Literature ◽  
Femoral Stem ◽  
Revision Total Knee Arthroplasty ◽  
Knee Prostheses ◽  
Rotating Hinge ◽  
Total Knee ◽  
Rotating Hinge Knee ◽  
Implant Breakage

Rotating-hinge knee implants are fully constrained knee prostheses commonly used for revision total knee arthroplasty. Nevertheless, rotating-hinge devices have been increasingly utilized in primary setting. Complications are inevitable in orthopedic surgery, however, implant breakage after RHK arthroplasty has been rarely described in medical literature. We present a rare case of 70-year-old Caucasian, male patient who suffered an atraumatic femoral stem breakage in a primary NexGen ® Rotating Hinge Knee (Zimmer-Biomet ® , Warsaw, IN, USA).

scholarly journals Short-term effectiveness of medial unicompartmental knee arthroplasty in young patients aged less than or equal to 60 years

2020 ◽  
Vol 28 (3) ◽  
pp. 230949902094511
Author(s):  
Fangxing Wang ◽  
Huaming Xue ◽  
Tong Ma ◽  
Tao Wen ◽  
Tao Yang ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Oxford Knee Score ◽  
Young Patients ◽  
Visual Analogue Score ◽  
Midterm Results ◽  
Effective Treatment Option ◽  
Unicompartmental Knee ◽  
Before And After

Purpose: The treatment for young patients with advanced knee arthritis by Oxford unicompartmental knee arthroplasty (Oxford-UKA) is still controversial. A relative few studies were published about Asian patients. We evaluated midterm results of Oxford-UKA in young patients aged less than or equal to 60 years. Methods: Between December 2009 and December 2018, 95 patients (109 knees) (mean age 57.48 years; range: 33–60 years) were included. The mean follow-up period was 3.0 years (range: 1.0–9.5 years). The functional outcomes and pain score of the knee before and after surgery were examined. Results: To the last follow-up, no patient died, six patients (nine knees) were lost and one patient underwent total knee revision in case of unexplained postoperative pain. The patients demonstrated significant improvement in range of knee motion (103.65 vs. 115.96, p < 0.05), Oxford Knee Score (40.0 vs. 14.4, p < 0.05), Hospital for Special Surgery Score (56.0 vs. 85.7, p < 0.05), and Visual Analogue Score (VAS) (5.23 vs. 1.08, p < 0.05) before and after surgery. Conclusion: Our midterm results showed that the Oxford-UKA was a reliable and effective treatment option for young patients aged less than or equal to 60 years with anterior medial osteoarthritis. The knee pain can be effectively relieved and excellent functional activities of the knee joint can be obtained after surgery.

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 Correction: Rotating hinge knee versus constrained condylar knee in revision total knee arthroplasty: A meta-analysis

PLoS ONE ◽  
2019 ◽  
Vol 14 (4) ◽  
pp. e0216004
Author(s):  
Jung-Ro Yoon ◽  
Ji-Young Cheong ◽  
Jung-Taek Im ◽  
Phil-Sun Park ◽  
Jae-Ok Park ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Meta Analysis ◽  
Revision Total Knee Arthroplasty ◽  
Rotating Hinge ◽  
Total Knee ◽  
Rotating Hinge Knee
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