Retro-prospective Study of Safety & Performance of Round XTENDOBUTTON™ Fixation Device Post Knee Repair (XTENDOBUTTON)

A Retro-prospective Follow-up Study of the Safety and Performance of the Round XTENDOBUTTON™ Fixation Device Post Knee Repair in Australian Centres

The 12 month post-operative study is designed to provide safety and performance data on the Round XTENDOBUTTON™ fixation device after knee repair.

Study Overview

• Status: Completed
• Conditions: Knee Reconstruction
• Intervention / Treatment: Device: Round XTENDOBUTTON Fixation Device used in suture fixation of ligaments and tendons in conjunction with an ULTRABUTTON™ product or ENDOBUTTON™ device.

Detailed Description

This is a retro-prospective 12 month follow-up study of the safety and performance of the Round XTENDOBUTTON™ fixation device post knee repair in Australian centres.

The Primary Objective is to assess successful fixation with the Round XTENDOBUTTON™ and the Secondary Objective is to generate safety and performance evidence for the Round XTENDOBUTTON™ Device via the collection of functional outcomes, patient reported outcomes and safety data.

Forty subjects will be enrolled; who have had the round XTENDOBUTTON™ Device implanted. To eliminate the potential for selection bias, Investigators will consecutively screen all subjects who have undergone knee/ligament repair/reconstruction using the Round XTENDOBUTTON™ Fixation Device. Subjects meeting the eligibility criteria will be contacted regarding interest in study participation. Screening will be conducted in sequential order based on the date of subjects' knee repair procedure; earliest to latest. Screening efforts must be documented on a screening and enrollment log, on which reasons for exclusion from or denial to participate should be noted A medical chart review will be conducted to identify potential study subjects who have been implanted with the ROUND XTENDOBUTTON™ device at the study site.

1. If a patient is eligible and would like to participate in the study, obtain written informed consent from the subject.----- Do not proceed until consent has been obtained -----
2. Assign the subject a Subject ID number and instruct the subject on treatment procedures
3. Complete Screening and Enrollment Log
4. Obtain demographic information and medical history, including information on all relevant concomitant medications
5. Collect operative information and implant disposition (including review of evidence of implant failure). If a failure has occurred, record details of the cause of failure. Collect x-rays if available.

6. Complete Patient Questionnaires:

   • Lysholm Score
   • Tegner Activity Scale
   • KOOS(Knee Injury and Osteoarthritis Outcome Score) Knee Score
7. If any adverse events, adverse device effects or device deficiencies are observed or reported, they must be recorded
8. Instruct the subject on follow-up procedures, including returning for Visit 2 in 6 months (-14 Days/+31 Days)

Visit 2 - 12 months post -op.

1. Query subject regarding any changes in general health and the use of concomitant medications since the last visit
2. If any adverse events, adverse device effects or device deficiencies are observed or reported, they must be recorded
3. Complete Lysholm Score, Tegner Activity Scale and KOOS Knee Score
4. Collect implant disposition information (including review of evidence of implant failure). If a failure has occurred, record details of the cause of failure. Collect x-rays if available
5. Complete End of Study CRF.

Safety will be evaluated by assessing the frequency and nature of adverse events, serious adverse events and revisions.

• Study Type: Observational
• Enrollment (Actual): 40

Contacts and Locations

Study Locations

• Australia
  • Frenchs Forest, Australia, 2086
    • Peninsula Orthapaedics

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 60 years (ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Primary care clinic

Description

Inclusion Criteria:

1. Subject received the Round XTENDOBUTTON™ for knee repair, 6 months (-14 Days/+31 Days) prior to enrollment
2. Subject agrees to follow the prospective study visit schedule (as defined in the study protocol and informed consent form) by signing the IRB/IEC approved informed consent form
3. Subject is ≥ 18 years of age or ≤ 60 years of age at the time of surgery.

Exclusion Criteria:

1. Subject is entered in another investigational drug, biologic, or device study
2. Subjects with a medical or physical condition that, in the opinion of the Investigator, would preclude safe subject participation in the study

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Success of the Round XTENDOBUTTON™ Fixation	The fixation success at 6 months post knee operation with the XTENDOBUTTON™ device. The Kaplan-Meier product limit survival estimates will be presented up to 6 months post-op along with the associated 95% confidence intervals. The event of interest will be fixation failure, defined as a revision due to a device failure, by 6 months.	6 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Fixation success of the Round XTENDOBUTTON™ at 12 months post operation	Fixation success of the Round XTENDOBUTTON™ at 12 months post operation. The Kaplan-Meier product limit survival estimates will be presented up to 12 months post-op along with the associated 95% confidence intervals. The event of interest will be fixation failure, defined as a revision due to a device failure, by 12 months.	12 months
Lysholm Score	The Lysholm Scale evaluates the outcomes of knee ligament surgery. The Lysholm Scale currently consists of eight items that measure: pain (25 points), instability (25 points), locking (15 points), swelling (10 points), limp (5 points), stair climbing (10 points), squatting (5 points), and need for support (5 points). The total score is the sum of each response to the eight questions, and may range from 0-100. Higher scores indicate a better outcome with fewer symptoms or disability	6 and 12 months
Tegner Activity Scale	The Tegner activity scale was designed as a score of activity level to complement other functional scores for patients with ligamentous injuries. The Tegner activity scale is a numerical scale ranging from 0 to 10. Each value indicates the ability to perform specific activities. An activity level of 10 corresponds to participation in competitive sports, including soccer, football, and rugby at the elite level; an activity level of 6 points corresponds to participation in recreational sports; and an activity level of 0 is assigned if a person is on sick leave or receiving a disability pension because of knee problems. An activity level of 5 to 10 is recorded only if the patient participates in recreational or competitive sports.	6 & 12 months
KOOS Score (Knee Injury and Osteoarthritis Outcome Score)	The Knee Injury and Osteoarthritis Outcome Score (KOOS) is self administered and assesses five outcomes: pain, symptoms, activities of daily living, sport and recreation function, and knee related quality of life.	6 & 12 months
Adverse events for the study duration		12 months
Radiographic evaluation at 6 months	Radiographic evaluation will be completed if an implant failure has occurred. Radiographic evaluations (if needed to investigate root cause of a device failure) will be summarized at 6 months.	6 months
Radiographic evaluation at 12 months	Radiographic evaluation will be completed if an implant failure has occurred. Radiographic evaluations (if needed to investigate root cause of a device failure) will be summarized at 12 months.	12 months

Collaborators and Investigators

• Sponsor: Smith & Nephew, Inc.
• Investigators: Principal Investigator: Sam Chia, MBBS, FRACS (Ortho), FAOrthA, PORI- Peninsula Orthopedic Research Institute

Study record dates

Study Major Dates

• Study Start (ACTUAL): November 21, 2019
• Primary Completion (ACTUAL): February 17, 2021
• Study Completion (ACTUAL): October 31, 2021

Study Registration Dates

• First Submitted: December 23, 2019
• First Submitted That Met QC Criteria: December 23, 2019
• First Posted (ACTUAL): December 26, 2019

Study Record Updates

• Last Update Posted (ACTUAL): May 10, 2022
• Last Update Submitted That Met QC Criteria: May 6, 2022
• Last Verified: May 1, 2022

More Information

Terms related to this study

• Other Study ID Numbers: XTENDO.PMCF.2018.12

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No