Navigated Total Hip Arthroplasty Using a 3-D Freehand Ultrasound System: Technical Note and Preliminary Results

Orthopedics ◽  
2011 ◽  
Author(s):  
Michael T. Hirschmann ◽  
Faik K. Afifi ◽  
Carsten Helfrich ◽  
Dieter Wirz ◽  
Tobias Schwägli ◽  
...  
2013 ◽  
Vol 5 (3) ◽  
pp. 20 ◽  
Author(s):  
Régis Pailhé ◽  
Nicolas Reina ◽  
Etienne Cavaignac ◽  
Akash Sharma ◽  
Valérie Lafontan ◽  
...  

There is a need of independent prospective studies about modern generation of hip resurfacing implants. The aim of this propective observational study was to compare the functional outcomes and revision rates with hip resurfacing arthroplasty and total hip arthroplasty and to present the preliminary results at 2 years. Patients included were recruited prospectively in the <em>Partial Pelvic Replacement Hip Project </em>by a single surgeon between January 2007 and January 2010. Patients were assessed with the Harris Hip Score (HHS) and Postel-Merle d’Aubigné (MDA) score and Devane Score. The end point of the study was reoperation for any cause related to the prosthesis. At a mean follow up of 38.6 months there were a total of 142 patients with hip resurfacing (group 1) [100 Durom® (Zimmer Inc., Warsaw, IN, USA) and 42 Birmingham Hip Resurfacing® (Smith &amp; Nephew, Memphis, TN, USA)] and 278 patients with total hip arthroplasty (group 2). The results showed significantly greater gain of HHS, MDA and Devane score with hip resurfacing procedures. However, considering all the complications, the rate was significantly higher in group 16.4% <em>vs</em> 1.79% in group 2 (P&lt;0.0001). In group 1 we observed 6 complications only concerned males with Durom® implants. The follow up of this cohort is still on going and may deliver more information on the evolution of these results in time.


2007 ◽  
Vol 23 (12) ◽  
pp. 611-617 ◽  
Author(s):  
Yu-Chuan Lin ◽  
Chung-Hwan Chen ◽  
Hsuan-Ti Huang ◽  
Jiing-Yuan Su ◽  
Yin-Chih Fu ◽  
...  

2010 ◽  
Vol 96 (1) ◽  
pp. 14-20 ◽  
Author(s):  
P. Mertl ◽  
O. Boughebri ◽  
E. Havet ◽  
P. Triclot ◽  
J.-F. Lardanchet ◽  
...  

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Tsutomu Nakayama ◽  
Sachiyuki Tsukada ◽  
Takayuki Hiyama ◽  
Tatsuya Yamada ◽  
Naoyuki Hirasawa

Background. Although active ankle movement plays a predominant role in mechanical thromboprophylaxis following total hip arthroplasty (THA), the most effective frequency of movement remains unclear.Materials and Methods.In 29 consecutive patients undergoing THA, the velocity of blood flow in the profunda femoris was measured after various frequencies of ankle movement two days after THA using a pulse wave Doppler ultrasound system. To test the interobserver reliabilities for the velocity measured with Doppler ultrasound system, the intraclass correlation coefficient was calculated based on the measurement in 10 limbs of healthy volunteers.Results.At 0, 1, and 2 minutes after ankle movement, the velocity after movement at 60 contractions per minute was significantly faster than that after movement at 40 or 80 contractions per minute (p=0.0007, repeated-measures analysis of variance). The intraclass correlation coefficient score in two investigators was 0.849 (95% confidence interval, 0.428 to 0.962).Conclusions.Active ankle movement at 60 contractions per minute is recommended in patients receiving THA to obtain optimal venous blood flow.


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