Dynamic Locking Screws 5.0 vs. Standard Locking Screws in Fracture of Distal Femur Treated With Locked Plate Fixation

NCT ID: NCT01693367

Last Updated: 2020-08-13

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE4

Total Enrollment

5 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-09-30

Study Completion Date

2014-12-31

Brief Summary

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The purpose of this study is to evaluate the performance of Dynamic Locking Screws (DLS) used to stabilize the shaft component of distal femur fractures in comparison to standard locking screws (SLS). The hypothesis is that DLS will lead to better functional outcomes (WOMAC score) due to increased and more symmetrical callus formation and fewer non-unions.

Detailed Description

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Conditions

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Distal Femur Fractures

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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DLS 5.0 (Dynamic Locking Screws)

ORIF with DLS 5.0 (Dynamic Locking Screws)

Group Type ACTIVE_COMPARATOR

DLS 5.0 (Dynamic locking screws)

Intervention Type DEVICE

Open reduction and internal fixation (ORIF) of the distal femur with a large fragment locking plate (LISS, LCP) and DLS 5.0

SLS (Standard locking screw)

ORIF with SLS (Standard locking screw)

Group Type ACTIVE_COMPARATOR

SLS (Standard locking screw)

Intervention Type DEVICE

Open reduction and internal fixation (ORIF) of the distal femur with a large fragment locking plate (LISS, LCP)and SLS (Standard locking screw)

Interventions

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DLS 5.0 (Dynamic locking screws)

Open reduction and internal fixation (ORIF) of the distal femur with a large fragment locking plate (LISS, LCP) and DLS 5.0

Intervention Type DEVICE

SLS (Standard locking screw)

Open reduction and internal fixation (ORIF) of the distal femur with a large fragment locking plate (LISS, LCP)and SLS (Standard locking screw)

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* 21 years and older
* Closed or open distal femur fracture (AO 33 A1-3, 33 C1-3) including distal femur fractures above a total knee arthroplasty
* Ability to walk independently prior to injury
* Eligible for treatment with ORIF of the distal femur with a large fragment locking plate (LISS, LCP)
* Willing and able to comply with post-operative protocol and return for follow-up.
* Ability to understand the content of the patient information / informed consent form and participate in the clinical investigation
* Signed informed consent

Exclusion Criteria

* Additional ipsi- or contralateral lower extremity fracture
* Any kind of implant at the ipsilateral proximal femur
* Pre-existing malunion or nonunion of the ipsilateral lower extremity
* Segmental bone defect requiring bone grafting
* More than 4 weeks between injury and surgery
* Pathologic fracture due to a disease other than osteoporosis (eg, tumor, metastasis)
* Polytrauma
* Active malignancy
* Any not medically managed severe systemic disease
* Recent history of substance abuse (ie, recreational drugs, alcohol) that would preclude reliable assessment
* Pregnancy or women planning to conceive within the study period
* Prisoner
* Participation in any other medical device or medicinal product study within the previous month that could influence the results of the present study
Minimum Eligible Age

21 Years

Maximum Eligible Age

120 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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AO Innovation Translation Center

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Michael J. Gardner, MD

Role: PRINCIPAL_INVESTIGATOR

Washington University School of Medicine

Sean E. Nork, MD

Role: PRINCIPAL_INVESTIGATOR

University of Washington

Locations

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UC Davis Medical Center

Sacramento, California, United States

Site Status

University of Missouri Orthopaedics

Columbia, Missouri, United States

Site Status

Washington University Orthopedics

St Louis, Missouri, United States

Site Status

Hospital of the University of Pennsylvania

Philadelphia, Pennsylvania, United States

Site Status

Harborview Medical Center

Seattle, Washington, United States

Site Status

Wilhelminenspital

Vienna, , Austria

Site Status

Charité Berlin, Campus Virchow Klinikum

Berlin, , Germany

Site Status

Universitätsklinikum des Saarlandes

Homburg, , Germany

Site Status

BGU Tübingen

Tübingen, , Germany

Site Status

Cantonal Hospital Chur

Chur, , Switzerland

Site Status

Luzerner Kantonsspital

Lucerne, , Switzerland

Site Status

Universitätsspital Zürich

Zurich, , Switzerland

Site Status

Countries

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United States Austria Germany Switzerland

Other Identifiers

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DLS 5.0

Identifier Type: -

Identifier Source: org_study_id

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