scholarly journals Posterior tibial slope accuracy with patient-specific cutting guides during total knee arthroplasty: A preliminary study of 50 cases

2015 ◽  
Vol 101 (6) ◽  
pp. S233-S240 ◽  
Author(s):  
B. Schlatterer ◽  
J.-M. Linares ◽  
J. Cazal ◽  
P. Merloz ◽  
S. Plaweski
Author(s):  
O-Sung Lee ◽  
Jangyun Lee ◽  
Myung Chul Lee ◽  
Hyuk-Soo Han

AbstractThe posterior tibial slope (PTS) is usually adjusted by less than 5 degrees, without considering its individual difference, during posterior cruciate-substituting (PS) total knee arthroplasty (TKA). The effect of these individual changes of PTS would be important because clinical results depending on postoperative PTS were reported conflictingly. We investigated the effect of the change in PTS on the postoperative range of motion (ROM) and clinical scores after PS TKA. We retrospectively reviewed 164 knees from 107 patients who underwent PS TKA with a 2-year follow-up. We analyzed the preoperative and postoperative PTS, ROM, visual analog scale pain scale, Western Ontario and McMaster University Index (WOMAC), Hospital for Special Surgery Knee Score, Knee Society Score, and Forgotten Joint Score (FJS). The association of the absolute change in PTS with ROM and clinical scores was analyzed using correlation analysis and multiple regression analysis. As a result, the mean PTS and mean ROM changed from 9.6 ±  3.4 and 120.1 ±  15.4 degrees preoperatively to 2.0 ±  1.3 and 128.4 ±  9.3 degrees postoperatively, and the mean PTS change was 7.6 ±  3.5 degrees. The PTS change had no statistically significant association with the postoperative ROM and clinical scoring systems, although it did have a weak positive correlation with WOMAC function, No 10 (difficulty in rising from sitting) (correlation coefficient = 0.342, p = 0.041), and moderate positive correlation with the FJS, No. 6 (awareness when climbing stairs) (correlation coefficient = 0.470, p = 0.001). The authors concluded that the amount of change in PTS did not affect the postoperative ROM and clinical scores, although proximal tibial resection with a constant target of PTS resulted in individually different changes in the PTS after PS TKA,


2018 ◽  
Vol 33 (12) ◽  
pp. 3778-3782.e1 ◽  
Author(s):  
Toshitaka Fujito ◽  
Tetsuya Tomita ◽  
Takaharu Yamazaki ◽  
Kosaku Oda ◽  
Hideki Yoshikawa ◽  
...  

Orthopedics ◽  
2019 ◽  
Vol 43 (1) ◽  
pp. e21-e26
Author(s):  
James L. Howard ◽  
Mina W. Morcos ◽  
Brent A. Lanting ◽  
Lyndsay E. Somerville ◽  
James P. McAuley

2016 ◽  
Vol 9 (2) ◽  
pp. 22-26
Author(s):  
Ryan K. Albrecht ◽  
Alexander C.M. Chong ◽  
Paul H. Wooley ◽  
Tarun Bhargava

Background. The incidence of malalignment in total knee arthroplasty(TKA) using conventional instrument has beenreported as high as 25%. A relatively new TKA system involvesthe use of a preoperative magnetic resonance image(MRI) to obtain accurate implant placement more consistently.For broad acceptance of this new technique, it iscrucial to analyze the initial intra-operative experience. Thespecific aim of this study was to evaluate the initial intra-operativeexperience of a single surgeon using this new technique. Methods. A total of 15 knees (12 patients: 6 female and 6male) were reviewed from TKA procedures using the selectedmanufacturer’s patient specific cutting guides between January2011 and April 2013 at a single institution. Patient demographicand specific parameters and intra-operative alterationsof component positioning were recorded and evaluated.Results. The preoperative plan was able to predict correctly thesize of the implanted femoral component in 87% (n = 13) andtibial component in 80% (n = 12) of the cases. However, 60% (n= 9) of cases required additional intra-operative corrections onfemoral resection, and 73% (n = 11) required an additional 2 - 4mm correction on the tibial proximal resection. Twenty percent(n = 3) required additional tibial varus/valgus correction, butthere were no tibial slope corrections for any of the 15 cases. Conclusions. The initial intra-operative experience of a singlesurgeon using current patient specific cutting guides for a selectedmanufacturer to align femoral and tibial components duringTKA has raised some concerns. We agreed with previous studiesthat caution should be taken when using patient specific cuttingguides without supportive data. The findings of this study providedadditional evidence to contest the accuracy of patient specificcutting guides with respect to the initial experience of an orthopaedicsurgeon who is trained in total joint replacement. Theresults provided more evidence to assist orthopaedic surgeonsin the decision of whether to use these patient specific systemsversus conventional TKA methods. KS J Med 2016;9(2):22-26.


2019 ◽  
Vol 16 (1) ◽  
pp. 25-30
Author(s):  
Takenori Tomite ◽  
Hidetomo Saito ◽  
Hiroaki Kijima ◽  
Kimio Saito ◽  
Hiroshi Tazawa ◽  
...  

2008 ◽  
Vol 23 (4) ◽  
pp. 586-592 ◽  
Author(s):  
Jae Ho Yoo ◽  
Chong Bum Chang ◽  
Kwang Sook Shin ◽  
Sang Cheol Seong ◽  
Tae Kyun Kim

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