Knee Functional Flexion Axis (FFA) data acquisition during Total Knee Arthroplasty with Stryker Knee Navigation

A prospective series of Total Knee Arthroplasty patients, undergoing surgery with the use of Stryker Knee Navigation for the aquisition of Functional Flexion Axis (FFA) data.

Status

Completed

Phases

Unknown

Study type

Interventional

Source

ANZCTR

Registry ID

ACTRN12610000493044

Acronym

N/A

Enrollment

Registered

2010-06-16

Start date

2009-12-12

Completion date

Unknown

Last updated

2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Computer assisted surgery has been developed to assist in obtaining ideal alignment of knee replacement prosthesis in patients with advanced knee osteoarthritis. Obtaining the precise positioning during sugery can be difficult. Using intraoperative dynamic movement of the knee a computer can take into account three dimensions and obtain a true "functional flexion axis" (FFA) of the knee which may more closely represent the true anatomical axis of the knee. This study will assess whether measurement of the "functional flexion axis" of the knee during surgery using specialised computer software is closely related to the Trans-Epicondylar Axis (TEA) obtained from an Computed tomography (CT) scan.

Interventions

During the Total Knee Arthroplasty surgical procedure (approximately 90-120 minutes) an extra software window in the navigation computer will be opened to take extra measurements to determine the Functional Flexion Axis.

Study design

Allocation

Non-randomised trial

Intervention model

Single group

Primary purpose

Treatment

Masking

Open (masking not used)

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

Patients requiring unilateral or bilateral computer assisted knee arthroplasty. Non-pregnant females. Over 18 years of age at time of surgery. Patients who understand the conditions of the study and are willing to participate. Patients who are capable of, and have given, written informed consent to their participation in the study

Exclusion criteria

Patients unable or unwilling to undergo a computerised tomography scan. Patients that suffer claustrophobia. Patients less than 18 years of age at the time of surgery.

Outcome results