Dataset Information

Computer-assisted navigation in patellofemoral arthroplasty: a new technique to improve rotational position of the trochlea.

ABSTRACT:

Background

Maltracking or subluxation is one of the complications of patellofemoral arthroplasty.

Questions/purposes

We questioned whether the computed navigation system can improve patellar tracking in patients with patellofemoral arthroplasty (PFA).

Methods

Between 2007 and 2010 we performed 15 patellofemoral arthroplasties using the Ceraver PFA and navigation assistance. Fifteen other patients underwent surgery without navigation during the same period and acted as a control group. The rotation of the native trochlea as measured using the epicondylar line as a reference before surgery and the rotation of the trochlear component and the trochlear twist angle were assessed with computed tomography (CT) scan after surgery.

Results

The mean follow-up was 3 years (range, 2-5 years). The group with navigation had no patellofemoral complications and better clinical scores. The group without navigation had abnormal patellofemoral tracking in 5 of the 15 patients. CT scan demonstrated excessive internal component rotation, as compared with patients without complications. This excessive internal rotation was proportional to the severity of the patellofemoral maltracking.

Conclusions

The short-term results suggest that navigation can lead to better trochlear rotation which, in our hands, is associated with fewer cases of patellar maltracking and better overall clinical scores.

SUBMITTER: Hernigou P

PROVIDER: S-EPMC3757487 | biostudies-literature | 2013 Jul

REPOSITORIES: biostudies-literature

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Publications

Computer-assisted navigation in patellofemoral arthroplasty: a new technique to improve rotational position of the trochlea.

Hernigou Philippe P Flouzat-Lachaniette Charles Henri CH Delblond William W Duffiet Pascal P Julian Didier D

HSS journal : the musculoskeletal journal of Hospital for Special Surgery 20130618 2

<h4>Background</h4>Maltracking or subluxation is one of the complications of patellofemoral arthroplasty.<h4>Questions/purposes</h4>We questioned whether the computed navigation system can improve patellar tracking in patients with patellofemoral arthroplasty (PFA).<h4>Methods</h4>Between 2007 and 2010 we performed 15 patellofemoral arthroplasties using the Ceraver PFA and navigation assistance. Fifteen other patients underwent surgery without navigation during the same period and acted as a con ...[more]

PMID: 24426856

Similar Datasets

Project description:Computer assisted surgery was pioneered in early 1990s. The first computer assisted surgery (CAS) total knee replacement with an imageless system was carried out in 1997. In the past 25 years, CAS has progressed from experimental in vitro studies to established in vivo surgical procedures.A comprehensive body of evidence establishing the advantages of computer assisted surgery in knee and hip arthroplasty is available. Established benefits have been demonstrated including its role as an excellent research tool. Its advantages include dynamic pre-operative and per-operative assessment, increased accuracy in correction of deformities, kinematics and mechanical axis, a better alignment of components, better survival rates of prostheses and a better functional outcome. Adoption of computer navigation in the hip arthroplasty is still at an early stage compared to knee arthroplasty, though the results are well documented. Evidence suggests improved accuracy in acetabular orientation, positioning, hip offset and leg length correction.Among the orthopaedic surgeons, navigated knee arthroplasty is gaining popularity though slowly. The uptake rates vary from country to country. The Australian joint registry data shows increased navigated knee arthroplasty from 2.4% in 2003 to 28.6% in 2015 and decreased revision rates with navigated knee arthroplasty in comparison with traditional instrumented knee arthroplasty in patient cohort under the age of 55 years.Any new technology has a learning curve and with practice the navigation assisted knee and hip arthroplasty becomes easy. We have actively followed the evidence of CAS in orthopaedics and have successfully adopted it in our routine practice over the last decades. Despite the cautious inertia of orthopaedic surgeons to embrace CAS more readily; we are certain that computer technology has a pivotal role in lower limb arthroplasty. It will evolve to become a standard practice in the future in various forms like navigation or robotics.

Dataset Information

Computer-assisted navigation in patellofemoral arthroplasty: a new technique to improve rotational position of the trochlea.

Background

Questions/purposes

Methods

Results

Conclusions

Publications

Computer-assisted navigation in patellofemoral arthroplasty: a new technique to improve rotational position of the trochlea.

Similar Datasets

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