Improved accuracy of computer assisted glenoid implantation in total shoulder arthroplasty: An in-vitro randomized controlled trial

Effect of glenoid deformity on glenoid component placement in primary shoulder arthroplasty

“…In the study by Nguyen et al, standard methods in normal cadaver surgery was not always able to place the glenoid within 10 of the desired version. 14 In the cases of glenoid bone loss that resulted in 19 or more of preoperative retroversion, the type of glenoid component used in this study could not be placed perpendicular to the plane of the scapula without perforation of the center peg. Peg perforation was due to excessive reaming and medialization of the joint line.…”

“…These methods may include use of a pin guide that can be adjusted to the desired angle to correct version or the use of patient specific instrumentation for guide pin placement. Nguyen et al 14 and Edwards et al 3 demonstrated increased accuracy with the use of computer assisted surgical navigation. Use of the surgical methods defined in this paper cannot be advocated in cases of glenoid retroversion greater than 10 .…”

A novel method of image-based navigation in fracture surgery

“…Five works have been Verborgt et al [30] showed a higher accuracy for achieving a central position of the glenoid in the axial plane and a 10°t ilt in the frontal plane by using a navigation system in a cadaver study. Similar improvements by employing computer navigation for better accuracy of reaming of the glenoid and glenoid component positioning showed three other cadaver studies [5,20,21]. Only one prospective study was found that compared the results of the position of the glenoid component in 20 patients.…”

Benefit of intraoperative navigation on glenoid component positioning during total shoulder arthroplasty

“…In 2009, Ngyuen et al tried to evaluate a computerassisted technique to achieve a more accurate placement of the glenoid component in a cadaver study [22]. They randomly implanted in a traditional or computer-assisted technique and found it to be more accurate in achieving the correct version during all phases of glenoid implantation.…”

“…Multiple points on the glenoid surface and coracoid were then taken Nano Station (Praxim, Grenoble, France) Kircher et al [13] CT Passive optical tracking Upper and lower pole of the glenoid, a medial and a lateral point on the coracoid process. Multiple points on the glenoid surface and coracoid were then taken Nano Station (Praxim, Grenoble, France)Nguyen et al[22] CT Passive tracking The superior, inferior, anterior, and posterior points on the glenoid rim, as well as a medial angle point on the medial aspect of the scapula,…”