scholarly journals Augmented Reality-Assisted Femoral Bone Resection in Total Knee Arthroplasty

2021 ◽  
Vol 6 (3) ◽  
Author(s):  
Sachiyuki Tsukada ◽  
Hiroyuki Ogawa ◽  
Masahiro Nishino ◽  
Kenji Kurosaka ◽  
Naoyuki Hirasawa
Keyword(s):  
Total Knee Arthroplasty ◽  
Augmented Reality ◽  
Knee Arthroplasty ◽  
Femoral Bone ◽  
Bone Resection ◽  
Total Knee

scholarly journals Patients' Perception of Bone and Tissue Excision, and the Size and Weight of Prostheses at Total Knee Arthroplasty

2017 ◽  
Vol 03 (03) ◽  
pp. e110-e112
Author(s):  
Benjamin Rossi ◽  
Narlaka Jayasekera ◽  
Fionnuala Kelly ◽  
Keith Eyres
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Postoperative Recovery ◽  
Patient Perception ◽  
Femoral Bone ◽  
Bone Resection ◽  
Orthopaedic Literature ◽  
Total Knee ◽  
A Prospective Study ◽  
Revision Tka

AbstractThe aim of this study is to ascertain patients' perception of the amount of bone and tissue excision and size and weight of their implanted prostheses at total knee arthroplasty (TKA). To our knowledge, no prior study in the English orthopaedic literature has analyzed these parameters against patient perception of TKA. In a prospective study of eight consecutive TKA (six primary and two single-stage revision TKA procedures) by a single surgeon, patients estimated the weight of their implanted knee. We assessed actual weights of their implants and bone cement. Patients estimated the size of their prostheses by sketching the tibial and femoral bone cuts upon a printout of an anteroposterior and lateral radiographs of their preoperative knee. We utilized an articulated plastic model knee for patient reference. Our study shows almost half a kilogram of weight is added postoperatively to the surgical site as a result of tissue excision, explanted material, and implanted prosthesis and cement. All patients overestimated the weight of their implanted prostheses and extent of bone excision. Thus, even ‘well-informed’ patients overestimate their bone resection and weight of implanted prosthesis at TKA. We postulate such misconceptions among TKA patients are common, and may impact negatively upon patient perception of TKA, their postoperative recovery and outcome.

scholarly journals Augmented reality-based navigation system applied to tibial bone resection in total knee arthroplasty

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Sachiyuki Tsukada ◽  
Hiroyuki Ogawa ◽  
Masahiro Nishino ◽  
Kenji Kurosaka ◽  
Naoyuki Hirasawa
Keyword(s):  
Total Knee Arthroplasty ◽  
Pilot Study ◽  
Augmented Reality ◽  
Knee Arthroplasty ◽  
Navigation System ◽  
External Rotation ◽  
Bone Resection ◽  
Posterior Slope ◽  
Total Knee ◽  
Surgical Field

Abstract Background This pilot study was performed to examine the accuracy of the AR-KNEE system, an imageless navigation system using augmented reality (AR) technology for total knee arthroplasty. The AR-KNEE system enables the surgeon to view information from the navigation superimposed on the surgical field on a smartphone screen in real time. Methods Using the AR-KNEE system, one surgeon resected 10 tibial sawbones with viewing the tibial axis and aiming varus/valgus, posterior slope, internal/external rotation angles, and resection level superimposed on the surgical field. We performed computed tomography of the resected sawbones and measured the varus/valgus, posterior slope, and internal/external rotation angles using a designated computer software. The thickness of the resected bone was measured using digital calipers. Results The absolute differences between the values displayed on the smartphone screen and the measurement values for varus/valgus, posterior slope, internal/external rotation angles, and thickness of the resected bone were 0.5° ± 0.2°, 0.8° ± 0.9°, 1.8° ± 1.5°, and 0.6 mm ± 0.7 mm, respectively. Conclusions This pilot study using sawbones suggested that the AR-KNEE system may provide reliable accuracy for coronal, sagittal, and rotational alignment in tibial bone resection during total knee arthroplasty.

Surgical Variability of Resection Parameters During Total Knee Arthroplasty

2012 ◽  
Author(s):  
Yifei Dai ◽  
Adam Henderson ◽  
Joern Seebeck ◽  
Jeffrey E. Bischoff
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Morphological Analysis ◽  
Bone Resection ◽  
Component Placement ◽  
Clinical Applicability ◽  
Component Design ◽  
Total Knee ◽  
Computational Analyses ◽  
Single Set

There is intrinsic surgical variability in the practice of total knee arthroplasty (TKA), and thus computational analyses of TKA should account for this variability to ensure clinical applicability and robustness of results. Statistical inputs within computational analyses have been used to assess the biomechanical characteristics of TKA implants [1], and such methodologies are promising when applied to morphological analysis of TKA in order to motivate component design, assess current designs, and improve the understanding of surgical outcomes. Analyses to date either directly use actual TKA component placement or bone resection data [2], or assume a single set of parameters for placement and resection across the entire specimen group that was investigated [3], and thus do not account for surgical variability. This could be due to a lack of available data to quantify clinical variability in TKA component placement.

Does final component alignment correlate with alignment of the bone resection surfaces in cemented total knee arthroplasty?

2016 ◽  
Vol 26 (5) ◽  
pp. 1436-1444 ◽  
Author(s):  
Seung-Suk Seo ◽  
Chang-Wan Kim ◽  
Chang-Rack Lee ◽  
Jin-Hyuk Seo ◽  
Do-Hun Kim ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Component Alignment ◽  
Bone Resection ◽  
Total Knee

scholarly journals The Bony Resection Accuracy with Patient-Specific Instruments during Total Knee Arthroplasty: A Retrospective Case Series Study

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Liang Yuan ◽  
Bin Yang ◽  
Xiaohua Wang ◽  
Bin Sun ◽  
Ke Zhang ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Tibial Plateau ◽  
Femoral Condyle ◽  
Medial Femoral Condyle ◽  
Lateral Femoral Condyle ◽  
Patient Specific ◽  
Lateral Tibial Plateau ◽  
Bone Resection ◽  
Total Knee

Purpose. Bony resection is the primary step during total knee arthroplasty. The accuracy of bony resection was highly addressed because it was deemed to have a good relationship with mechanical line. Patient-specific instruments (PSI) were invented to copy the bony resection references from the preoperative surgical plan during a total knee arthroplasty (TKA); however, the accuracy still remains controversial. This study was aimed at finding out the accuracy of the bony resection during PSI-assisted TKA. Methods. Forty-two PSI-assisted TKAs (based on full-length leg CT images) were analyzed retrospectively. Resected bones of every patient were given a CT scan, and three-dimensional radiographs were reconstructed. The thickness of each bony resection was measured with the three-dimensional radiographs and recorded. The saw blade thickness (1.27 mm) was added to the measurements, and the results represented intraoperative bone resection thickness. A comparison between intraoperative bone resection thickness and preoperatively planned thickness was conducted. The differences were calculated, and the outliers were defined as >3 mm. Results. The distal femoral condyle had the most accurate bone cuts with the smallest difference (median, 1.0 mm at the distal medial femoral condyle and 0.8 mm at the distal lateral femoral condyle) and the least outliers (none at the distal medial femoral condyle and 1 (2.4%) at the distal lateral femoral condyle). The tibial plateau came in second (median difference, 0.8 mm at the medial tibial plateau and 1.4 mm at the lateral tibial plateau; outliers, none at the medial tibial plateau and 1 (2.6%) at the lateral tibial plateau). Regardless of whether the threshold was set to >2 mm (14 (17.9%) at the tibial plateau vs. 12 (14.6%) at the distal femoral condyle, p > 0.05 ) or >3 mm (1 (1.3%) at the tibial plateau vs. 1 (1.2%) at the distal femoral condyle, p > 0.05 ), the accuracy of tibial plateau osteotomy was similar to that of the distal femoral condyle. Osteotomy accuracy at the posterior femoral condyle and the anterior femoral condyle were the worst. Outliers were up to 6 (15.0%) at the posterior medial femoral condyle, 5 (12.2%) at the posterior lateral femoral condyle, and 6 (15.8%) at the anterior femoral condyle. The percentages of overcut and undercut tended to 50% in most parts except the lateral tibial plateau. At the lateral tibial plateau, the undercut percentage was twice that of the overcut. Conclusion. The tibial plateau and the distal femoral condyle share a similar accuracy of osteotomy with PSI. PSI have a generally good accuracy during the femur and tibia bone resection in TKA. PSI could be a kind of user-friendly tool which can simplify TKA with good accuracy. Level of Evidence. This is a Level IV case series with no comparison group.

scholarly journals HURWA Robotic-Assisted TKA System is Suitable for a Variety of Prosthesis Types

2021 ◽  
Author(s):  
Xingye Li ◽  
Zheng Li ◽  
Xiaofeng Zhang ◽  
Lele Ding ◽  
Jun Yan ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Pain Relief ◽  
Knee Arthroplasty ◽  
Joint Replacement ◽  
Life Quality ◽  
Bone Resection ◽  
Surgical Interventions ◽  
Robotic Assisted ◽  
Total Knee ◽  
Preoperative Plan

Abstract Background Total knee arthroplasty (TKA) is an effective and also mature surgical interventions that improves life quality and provides pain relief. Accurate bone cuts are important to prevent TKA malalignment and it requires cautious preoperative plan and precise bone resection. Recently, robotic-assisted TKA techniques have been used to improve the accuracy of bone resection and implantation. However, the system described above suits for only one prosthesis type. Methods Five types (MicroPort_CS, Smith& Nephew_GII, Johnson&Johnson_PFC_PS, kingnow _VLQX_PS and Akmedical_A3GT_PS) implants were included in our study and three Sawbones models were used for each implant. Procedures were performed by experienced joint replacement surgeons using HURWA robotic-assisted TKA system. Results our study indicated that the bone resection error of HURWA robotic-assisted system was below 0.5 mm (with SDs below 0.3 mm), and all of the bone resection angles were below 0.5° (with SDs below 0.3°). The bone resection angles and levels deviation of different brand prosthesis types were below 0.5 mm (with SDs below 0.3 mm) and below 0.5° (with SDs below 0.3°) respectively. Conclusion It suggested that our system may be suitable for different prosthesis types.

Sign in / Sign up

Export Citation Format

Share Document