scholarly journals Periacetabular osteotomy using an imageless computer-assisted navigation system: a new surgical technique

2019 ◽  
Vol 6 (4) ◽  
pp. 426-431
Author(s):  
Jessica M Hooper ◽  
Rachel R Mays ◽  
Lazaros A Poultsides ◽  
Pablo G Castaneda ◽  
Jeffrey M Muir ◽  
...  
Keyword(s):  
Surgical Technique ◽  
Navigation System ◽  
Periacetabular Osteotomy ◽  
Weight Bearing ◽  
Computer Assisted ◽  
Joint Stability ◽  
Modified Technique ◽  
Assisted Navigation ◽  
Acetabular Fragment ◽  
Imageless Navigation

Abstract Periacetabular osteotomy (PAO) is an effective surgical treatment for hip dysplasia. The goal of PAO is to reorient the acetabulum to improve joint stability, lessen contact stresses and slow the development of hip arthrosis. During PAO, the acetabulum is repositioned to adequately cover the femoral head. PAO preserves the weight-bearing posterior column of the pelvis, maintains the acetabular blood supply and retains the hip abductor musculature. The surgical technique needed to perform PAO is technically demanding, with correct repositioning of the acetabulum the most important—and challenging—aspect of the procedure. Imageless navigation has proven useful in other technically challenging surgeries, although its use in PAO has not yet been investigated. We have modified the standard technique for PAO to include the use of an imageless navigation system to confirm acetabular fragment position following osteotomy. Here, we describe the surgical technique and discuss the potential of this modified technique to improve patient-related outcomes.

scholarly journals Periacetabular Osteotomy Performed with Imageless Computer-Assisted Navigation: Case Report

2019 ◽  
Vol 2 (1-3) ◽  
pp. 33-39
Author(s):  
Atul F. Kamath ◽  
Rachel R. Mays
Keyword(s):  
Surgical Navigation ◽  
Periacetabular Osteotomy ◽  
Computer Navigation ◽  
Developmental Dysplasia ◽  
Computer Assisted ◽  
Developmental Hip Dysplasia ◽  
Assisted Navigation ◽  
First Case ◽  
Acetabular Fragment ◽  
Pao Surgery

Periacetabular osteotomy (PAO) is an effective surgical treatment for developmental hip dysplasia. The goal of PAO is to reorient the acetabulum to increase acetabular coverage of the femoral head, as well as to reduce contact pressures within the hip joint. The primary challenge of PAO is to accurately achieve the desired acetabular fragment orientation, while maximizing containment and congruency. As key parts of the procedure are performed out of direct field of view of the surgeon, combined with this challenge of precise spatial orientation, there is a potential role for technologies such as surgical navigation. Adjunctive technology may provide information on the orientation of repositioned acetabulum and may offer a useful assist in performing PAO. Here, we present a case of developmental dysplasia of the hip treated via PAO with the addition of an imageless computer navigation device. Surgery was successful, and, at 3 months after procedure, the patient was progressing well. To our best knowledge, this is the first case using imageless computer-assisted navigation in PAO surgery.

scholarly journals Initial Results of an Acetabular Center Axis Registration Technique in Navigated Hip Arthroplasty with Deformed Acetabular Rims

2016 ◽  
Vol 10 (1) ◽  
pp. 26-35 ◽  
Author(s):  
Hiroshi Wada ◽  
Hajime Mishima ◽  
Tomohiro Yoshizawa ◽  
Hisashi Sugaya ◽  
Tomofumi Nishino ◽  
...  
Keyword(s):  
Hip Arthroplasty ◽  
Navigation System ◽  
Ct Images ◽  
Computer Assisted ◽  
Assisted Navigation ◽  
True Value ◽  
Imageless Navigation ◽  
Acetabular Morphology ◽  
Subcutaneous Tissues ◽  
Center Axis

BackgroundIn cementless total hip arthroplasty, imageless computer-assisted navigation is usually used to register the anterior pelvic plane (APP). The accuracy of this method is influenced by the subcutaneous tissues overlying the registration landmarks. On the other hand, the acetabular center axis (ACA) is determined from the acetabular rim. Precise registration of the ACA is possible because of direct palpation using a pointer. Imageless navigation using the ACA usually targets patients with normal acetabular morphology. The aim of this study was to investigate the accuracy of imageless navigation using the ACA instead of the APP in patients with normal or deformed acetabular rims.MethodsThe intraoperative cup position was compared with that obtained from the postoperative computed tomography (CT) images in 18 cases.ResultsThe inclination angle derived from the navigation system was 3.4 ± 5.3 degrees smaller and the anteversion angle was 1.4 ± 3.1 degrees larger than those derived from the CT images.ConclusionThe inclination cup angle of the navigation system was significantly inferior to the true value, particularly in cases with large anterior osteophytes.

scholarly journals Patient-specific template and electromagnetic navigation assisted bilateral periacetabular osteotomy for staged correction of bilateral injury-induced hip dysplasia: a case report

2021 ◽  
Author(s):  
Peter Brumat ◽  
Rene Mihalič ◽  
Črt Benulič ◽  
Anže Kristan ◽  
Rihard Trebše
Keyword(s):  
Case Report ◽  
Hip Dysplasia ◽  
Periacetabular Osteotomy ◽  
Patient Specific ◽  
Computer Assisted ◽  
Electromagnetic Navigation ◽  
Assisted Navigation ◽  
High Surgical Risk ◽  
Unique Method ◽  
Post Traumatic

ABSTRACT Periacetabular osteotomy (PAO) for pelvic fracture sequelae presents a challenge in hip preservation surgery due to a combination of complex conditions involving post-traumatic altered anatomy and technically demanding procedure, with high surgical risk involved. To address these challenging conditions and evade potential devastating complications, a combination of patient-specific template (PST) and electromagnetic navigation (EMN) guidance can be used to increase the safety of the procedure and the accuracy of the acetabular reorientation. Herein we report our experience utilizing a combined PST- and EMN-assisted bilateral PAO for staged correction of bilateral severe, injury-induced hip dysplasia. The presented case report describes a unique method of successful surgical treatment of severe, bilateral injury-induced hip dysplasia with combined 3-D printing technology (PST) and intra-operative electromagnetic computer-assisted navigation (EMN) aided technically demanding surgical procedure (PAO), which emphasizes the benefits of PST and EMN use in hip preservation surgery in patients with complex pathoanatomic circumstances.

scholarly journals Stereotactic image‐guided microwave ablation of hepatocellular carcinoma using a computer‐assisted navigation system

2019 ◽  
Vol 39 (10) ◽  
pp. 1975-1985 ◽  
Author(s):  
Anja Lachenmayer ◽  
Pascale Tinguely ◽  
Martin H. Maurer ◽  
Lorenz Frehner ◽  
Marina Knöpfli ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Navigation System ◽  
Microwave Ablation ◽  
Computer Assisted ◽  
Assisted Navigation ◽  
Image Guided

Computer Assisted Navigation Systems for Hip and Knee Reconstructive Surgery: Evaluation of Traditional Surgical Technique

2001 ◽  
Author(s):  
Anthony M. DiGioia ◽  
Frederic Picard ◽  
Branislav Jaramaz ◽  
David Sell ◽  
James C. Moody ◽  
...  
Keyword(s):  
Surgical Technique ◽  
Patient Outcomes ◽  
Reconstructive Surgery ◽  
Surgical Navigation ◽  
Surgical Techniques ◽  
Measurement Tool ◽  
Computer Assisted ◽  
Navigation Systems ◽  
Assisted Navigation ◽  
Surgical Navigation System

Abstract In this paper we describe a surgical navigation system named HipNav (Hip-Navigation) for THR and KneeNav (Knee-Navigation) for TKR with an emphasis on using these systems as a real time intraoperative measurement tool (these enabling technologies are the surgical toolbox of the future). This approach will permit the direct comparison of patient outcomes with measurable surgical techniques.

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