Prospective Randomized Trial of Navigated and Conventional TKA

Conditions

Osteoarthritis of the Knee

Keywords

Total Knee Arthroplasty, Navigation

Brief summary

Evaluation of the component position and kinematics after navigated and conventional Total Knee Arthroplasty.

Detailed description

1. Component position, kinematics After skin closure lateral x-rays were done in different flexion angles in order to evaluate the kinematic behaviour of the TKA. A full-length standing and a lateral radiograph as well as CT scans of the hip, knee and ankle joint were performed 5 to 7 days postoperatively before discharge. 2. clinical outcome Patient sociodemographic and anamnestic data were collected. The written interview was complemented by the EuroQol questionnaire (release EQ-5D) and the assessment of the patients' functional status (Knee Society Score) one week before surgery and 18 to 24 month after surgery.

Franziska Beyer, Alexander Pape, Cornelia Lützner, Stephan Kirschner, Jörg Lützner

BMC Musculoskeletal Disorders2021-08-1815 citations

10.1186/s12891-021-04556-3

Prosthesis alignment affects axial rotation motion after total knee replacement: a prospective in vivo study combining computed tomography and fluoroscopic evaluations.

Harman MK, Banks SA, Kirschner S, Lützner J.

2012-10-2337 citations

10.1186/1471-2474-13-206

Rotational alignment of the tibial component in total knee arthroplasty is better at the medial third of tibial tuberosity than at the medial border.

Lützner J, Krummenauer F, Günther KP, Kirschner S.

2010-03-2576 citations

10.1186/1471-2474-11-57

Interventions

PROCEDUREImplantation of a Total Knee Arthroplasty

In all patients a cemented, unconstrained, cruciate-retaining TKA with a rotating platform (ScorpioTM PCS, Stryker Orthopaedics, Mahwah, NJ) was implanted. No patellar resurfacing was performed. A medial parapatellar approach with a femur-first preparation was done in all cases. The Stryker Navigation System, Knee Navigation Software V3.1 (Stryker Orthopaedics, Mahwah, NJ) was used for computer-assisted implantation. The conventional implantation was performed with femoral intramedullary and tibial extramedullary standard alignment guides.

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

50 Years to No maximum

Healthy volunteers

No

Inclusion criteria

* primary or secondary osteoarthritis of the knee * indication to TKA * a mechanical axis between 20° varus and 5° valgus * signed informed consent

Exclusion criteria

* previous hemi- or total arthroplasty * severe instability that could not be treated with an unconstrained, cruciate-retaining TKA

Design outcomes

Primary

Measure	Time frame
rotational component position	postoperatively

Secondary

Measure	Time frame
leg axis	postoperatively
kinematics	postoperatively
clinical outcome	18 to 24 month postoperatively

Countries

Germany

Outcome results

None listed