scholarly journals A prospective double-blinded randomised control trial comparing robotic arm-assisted functionally aligned total knee arthroplasty versus robotic arm-assisted mechanically aligned total knee arthroplasty

Trials ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Babar Kayani ◽  
Sujith Konan ◽  
Jenni Tahmassebi ◽  
Sam Oussedik ◽  
Peter D. Moriarty ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Robotic Arm ◽  
Randomised Control Trial ◽  
Total Knee ◽  
Double Blinded

scholarly journals Effects of Tourniquet Application on Faster Recovery after Surgery and Ischemia-Reperfusion Post–Total Knee Arthroplasty, Cementation through Closure versus Full-Course and Nontourniquet Group

2021 ◽  
Author(s):  
Qinggang Cao ◽  
Qiong Wu ◽  
Yun Liu ◽  
Zhiwei He ◽  
Yu Cong ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Ischemia Reperfusion ◽  
Inflammatory Factors ◽  
Thigh Circumference ◽  
Lower Pain ◽  
Total Knee ◽  
Double Blinded ◽  
Special Time ◽  
Time Point

AbstractPneumatic tourniquets are used in total knee arthroplasty (TKA) for surgical field visualization and improved cementation; however, their use is controversial. This study aimed to assess the effects of tourniquet application on faster recovery post-TKA. Our hypothesis was that inflammation and limb function would be similar with different tourniquet applications. A prospective randomized double-blinded trial assessed tourniquets effects on postoperative pain, swelling, and early outcome in TKA. In present study, 50 TKAs were enrolled in each group as follows: full course (FC), cementation through closure (CTC), and no tourniquet (NT), CTC as treatment group while FC and NT as control groups. Topical blood samples of 3 mL from the joint cavity and drainage bags were obtained at special time point. At last, all samples such as tumor necrosis factor-a (TNF-a), C-C motif chemokine ligand 2 (CCL2), pentraxin 3 (PTX3), prostaglandin E2 (PGE2), superoxide dismutase 1 (SOD1), and myoglobin (Mb) were detected by ELISA. Active and passive range of motion (ROM) values, pain score by the visual analog scale (VAS), change of thigh circumference were recorded at special time point as well. In topical blood, the change of inflammatory factors, such as TNF-a, PTX3, CCL2, PGE2, SOD1, and Mb, was lower in CTC and NT groups than in FC group (p < 0.01 and 0.05). Although VAS and ROM were comparable preoperatively in three groups (p > 0.05), the perimeter growth rate was lower, pain scores (VAS) were reduced, and ROM values were improved in CTC and NT groups compared with FC group at T4, T5, and T6 postoperatively (p < 0.01 and 0.05). Improved therapeutic outcome was observed in the CTC group, indicating patients should routinely undergo TKA with cementation through closure tourniquet application.

scholarly journals Correction to: Robotic‑arm assisted total knee arthroplasty is associated with improved accuracy and patient reported outcomes: a systematic review and meta‑analysis

2021 ◽  
Author(s):  
Junren Zhang ◽  
Wofhatwa Solomon Ndou ◽  
Nathan Ng ◽  
Paul Gaston ◽  
Philip M. Simpson ◽  
...  
Keyword(s):  
Systematic Review ◽  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Patient Reported Outcomes ◽  
Meta Analysis ◽  
Robotic Arm ◽  
Patient Reported ◽  
Total Knee ◽  
Improved Accuracy

A correction to this paper has been published: https://doi.org/10.1007/s00167-021-06522-x

A Prospective Randomised Control Trial Comparing Functional with Mechanical Axis Alignment in Total Knee Arthroplasty: study protocol for an investigator initiated trial

2021 ◽  
Author(s):  
Richard Steer ◽  
Beth Tippett ◽  
R Nazim Khan ◽  
Dermot Collopy ◽  
Gavin Clark
Keyword(s):  
Total Knee Arthroplasty ◽  
Soft Tissue ◽  
Knee Arthroplasty ◽  
Functional Outcomes ◽  
Medical Information ◽  
Randomised Control Trial ◽  
Computer Assisted ◽  
Patient Reported ◽  
Total Knee ◽  
Alternative Alignment

Abstract Background: A drive to improve functional outcomes for patients undergoing total knee arthroplasty (TKA) has led to alternative alignment being used. Functional alignment (FA) uses intraoperative soft tissue tension to determine the optimal position of the prosthesis within the patients soft tissue envelope. Angular limits for bone resections are followed to prevent long term prosthesis failure. This study will use the aid of robotic assistance to plan and implement the final prosthesis position. This method has yet to be compared to the traditional mechanically aligned (MA) knee in a randomised trial. Methods: A blinded randomised control trial with 100 patients will be undertaken via Perth Hip and Knee clinic. Fifty patients will undergo a MA TKA and fifty will undergo a FA TKA. Both alignment techniques will be balanced via computer assisted navigation to assess prosthetic gaps, being achieved via the initial bony resection and further soft tissue releases as required to achieve satisfactory balance. The primary outcome will be the forgotten joint score (FJS) two years after surgery, with secondary outcomes being other patient reported outcome measures, clinical functional assessment, radiographic position and complications. Other data that will be collected will be patient demography (Sex, Age, level of activity) and medical information (grade of knee injury, any other relevant medical information). The linear statistical model will be fitted to the response (FJS), including all the other variables as covariates. Discussion: Many surgeons are utilising alternative alignment techniques with a goal of achieving better functional outcomes for their patients. Currently MA TKA remains the gold standard with good outcomes and excellent longevity. There is no published RCTs comparing FA to MA yet and only two registered studies are planned or currently in progress. This study utilizes a FA technique which differs from the two studies. This study will help determine if FA TKA has superior functional results for patients.Trial registration: This trial has been registered with the Australian New Zealand Clinical Trials Registry (ANZCTR) http://www.anzctr.org.au: U1111-1257-2291, registered 25th Jan 2021. It is also listed on www.clinicaltrials.gov: NCT04748510

scholarly journals Role of Parecoxib Sodium in the Multimodal Analgesia after Total Knee Arthroplasty: A Randomized Double-blinded Controlled Trial

2018 ◽  
Vol 10 (4) ◽  
pp. 321-327 ◽  
Author(s):  
Yan-yan Bian ◽  
Long-chao Wang ◽  
Wen-wei Qian ◽  
Jin Lin ◽  
Jin Jin ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Controlled Trial ◽  
Multimodal Analgesia ◽  
Total Knee ◽  
Double Blinded

scholarly journals Robotic arm-assisted bi-unicompartmental knee arthroplasty maintains natural knee joint anatomy compared with total knee arthroplasty: a prospective randomized controlled trial

2020 ◽  
Vol 102-B (11) ◽  
pp. 1511-1518
Author(s):  
Matthew S. Banger ◽  
William D. Johnston ◽  
Nima Razii ◽  
James Doonan ◽  
Philip J. Rowe ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Randomized Controlled Trial ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Controlled Trial ◽  
Robotic Arm ◽  
Randomized Controlled ◽  
Unicompartmental Knee ◽  
Postoperative Changes ◽  
Total Knee

Aims The aim of this study was to compare robotic arm-assisted bi-unicompartmental knee arthroplasty (bi-UKA) with conventional mechanically aligned total knee arthroplasty (TKA) in order to determine the changes in the anatomy of the knee and alignment of the lower limb following surgery. Methods An analysis of 38 patients who underwent TKA and 32 who underwent bi-UKA was performed as a secondary study from a prospective, single-centre, randomized controlled trial. CT imaging was used to measure coronal, sagittal, and axial alignment of the knee preoperatively and at three months postoperatively to determine changes in anatomy that had occurred as a result of the surgery. The hip-knee-ankle angle (HKAA) was also measured to identify any differences between the two groups. Results The pre- to postoperative changes in joint anatomy were significantly less in patients undergoing bi-UKA in all three planes in both the femur and tibia, except for femoral sagittal component orientation in which there was no difference. Overall, for the six parameters of alignment (three femoral and three tibial), 47% of bi-UKAs and 24% TKAs had a change of < 2° (p = 0.045). The change in HKAA towards neutral in varus and valgus knees was significantly less in patients undergoing bi-UKA compared with those undergoing TKA (p < 0.001). Alignment was neutral in those undergoing TKA (mean 179.5° (SD 3.2°)) while those undergoing bi-UKA had mild residual varus or valgus alignment (mean 177.8° (SD 3.4°)) (p < 0.001). Conclusion Robotic-assisted, cruciate-sparing bi-UKA maintains the natural anatomy of the knee in the coronal, sagittal, and axial planes better, and may therefore preserve normal joint kinematics, compared with a mechanically aligned TKA. This includes preservation of coronal joint line obliquity. HKAA alignment was corrected towards neutral significantly less in patients undergoing bi-UKA, which may represent restoration of the pre-disease constitutional alignment (p < 0.001). Cite this article: Bone Joint J 2020;102-B(11):1511–1518.

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