scholarly journals Arthroscopically Assisted Retrograde Intramedullary Nailing for Periprosthetic Fracture of the Femur after Posterior-Stabilized Total Knee Arthroplasty

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Kazuhiko Udagawa ◽  
Yasuo Niki ◽  
Kengo Harato ◽  
Shu Kobayashi ◽  
So Nomoto
Keyword(s):  
Total Knee Arthroplasty ◽  
Intramedullary Nailing ◽  
Knee Arthroplasty ◽  
Periprosthetic Fracture ◽  
Distal Femur ◽  
Entry Point ◽  
Posterior Stabilized ◽  
Tibial Insert ◽  
Arthroscopically Assisted ◽  
Total Knee

Retrograde intramedullary nailing (RIMN) has been used for periprosthetic fracture of the distal femur after total knee arthroplasty (TKA), yielding good fracture union rates and satisfactory outcomes. However, RIMN for posterior-stabilized- (PS-) TKA risks malpositioning the entry point and disturbing the post of the tibial insert, and the surgeon therefore usually requires knee joint arthrotomy. We report a case of a 79-year-old male who was involved in bicycle accident resulting in periprosthetic fracture of the distal femur after PS-TKA. We performed osteosynthesis with arthroscopically assisted RIMN to define an appropriate entry point. RIMN for posterior-stabilized- (PS-) TKA risks malpositioning the entry point and disturbing the post of the tibial insert. Because arthroscopy can directly visualize the entry point and the tibial post without arthrotomy, arthroscopically assisted RIMN offers a useful technical option for periprosthetic fracture of the distal femur after PS-TKA.

The Influence of Tibial Insert Design on Posterior Stabilized Total Knee Arthroplasty Kinematics

2011 ◽  
Author(s):  
Mehul A. Dharia ◽  
Marc Muenchinger ◽  
Eik Siggelkow ◽  
Jeff E. Bischoff
Keyword(s):  
Total Knee Arthroplasty ◽  
Posterior Cruciate Ligament ◽  
Knee Arthroplasty ◽  
Clinical Studies ◽  
Cruciate Ligament ◽  
Posterior Stabilized ◽  
Posterior Stabilization ◽  
Design Concepts ◽  
Tibial Insert ◽  
Total Knee

Posterior stabilization in PCL (Posterior Cruciate Ligament) sacrificing Total Knee Arthroplasty (TKA) can be achieved by two commonly used design concepts. Anteriorposterior (AP) stability can be provided either by the ultracongruent (UC) shape of the tibial articulation or by a posterior cruciate substitution with a central spine on the tibial insert which articulates with a transverse cam on the femoral component [1]. Clinical studies have indicated that the use of UC tibial insert design does not significantly compromise the TKA outcomes when compared with the use of posterior cruciate substituting design [2].

scholarly journals Distal Femoral Pin Tracker Placement Prevents Pin Tract-induced Fracture in Robotic-Assisted Total Knee Arthroplasty

2021 ◽  
Author(s):  
Ji-Hoon Baek ◽  
Su Chan Lee ◽  
Jin-Hong Kim ◽  
Hye Sun Ahn ◽  
Chang Hyun Nam
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Distal Femur ◽  
Sagittal Plane ◽  
Knee Prosthesis ◽  
Consecutive Series ◽  
Posterior Stabilized ◽  
Robotic Assisted ◽  
Total Knee

AbstractThe purpose of this study was to determine the effectiveness of the placement of pin trackers in the medial sagittal plane of the distal femur in robotic-assisted total knee arthroplasty (TKA) over a minimum follow-up period of 3 months. From August 2020 to October 2020, a consecutive series of 81 TKAs were performed in 59 patients using the Triathlon posterior-stabilized total knee prosthesis with a robotic-assisted system (Mako) at our hospital. Patient charts were reviewed for complications associated with the pin sites, including fracture, infection, thigh pain, and the need for reoperation. No patients had any minor or major complications associated with distal femoral pins. This technique, which used pin trackers in the medial sagittal plane of the distal femur, could be a useful option for surgeons performing robotic-assisted TKA. This is a Level IV study.

Outcomes of Periprosthetic Distal Femur Fractures Following Total Knee Arthroplasty: Intramedullary Nailing versus Plating

Injury ◽  
2021 ◽  
Author(s):  
Elizabeth B. Gausden ◽  
Philip K. Lim ◽  
Annat Rabonivich ◽  
M. Kareem Shaath ◽  
Phillip M. Mitchell ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Intramedullary Nailing ◽  
Knee Arthroplasty ◽  
Distal Femur ◽  
Femur Fractures ◽  
Total Knee

scholarly journals Accuracy of total knee arthroplasty using the modified gap technique based on the bone gap: an evaluation of the bone gap with a distal femoral trial component

Arthroplasty ◽  
2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Goki Kamei ◽  
Shigeki Ishibashi ◽  
Koki Yoshioka ◽  
Satoru Sakurai ◽  
Hiroyuki Inoue ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Soft Tissue ◽  
Knee Arthroplasty ◽  
Distal Femur ◽  
Gap Size ◽  
Flexion Gap ◽  
Gap Technique ◽  
Joint Gap ◽  
Total Knee ◽  
The Mean

Abstract Background In total knee arthroplasty (TKA) using the modified gap technique, the soft-tissue balance is measured after osteotomy of the distal femur and proximal tibia (conventional bone gap). However, after osteotomy, the flexion gap size during 90° knee flexion may be larger than that observed after implantation. The tension of the lateral compartment during 90° flexion may also be reduced after osteotomy of the distal femur. We manufactured a distal femoral trial component to reproduce the condition after implantation and prior to posterior condyle osteotomy. This study aimed to evaluate the effect of the trial component on the flexion gap. Methods This prospective study included 21 consecutive patients aged 78 years with medial osteoarthritis who underwent cruciate-retaining TKA between February 2017 and March 2018. The postoperative flexion gap size and inclination during 90° flexion were compared between cases with and without the trial component. Results The mean joint gap size with the trial component (13.4 ± 0.80 mm) was significantly smaller than that without the trial component (14.7 ± 0.84 mm). The mean gap inclination angle with the trial component (3.7° ± 0.62°) was significantly smaller than that without the trial component (5.5° ± 0.78°). Conclusions In the present study, the joint gap size and medial tension were significantly reduced after the trial component had been set. Accurate measurement of the soft-tissue balance is an important factor in the modified gap technique, and this method using a distal femoral trial component can offer better outcomes than those achieved with conventional methods.

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