Medacta GMK Sphere® Multicenter Post-Market Outcomes Study

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

260 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-06-30

Study Completion Date

2024-12-05

Brief Summary

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This study is to average Forgotten Knee Score (FJS) of those patients receiving the Medacta GMK Sphere® knee at the two and five year time points. 70 subjects, enrolled at the data coordinating center in Medacta GMK Sphere® vs Posterior Stabilized study (WIRB Pro Num: 20141994) and randomized to the Sphere arm, will have their data utilized for this study.

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Detailed Description

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Conditions

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Osteoarthritis

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Medacta GMK Sphere® Knee Prosthesis

All subjects enrolled will receive the Medacta GMK Sphere® Medial Knee Prosthesis

Group Type OTHER

Medacta GMK Sphere® Medial Knee Prosthesis

Intervention Type DEVICE

There is no consensus within the Arthroplasty community as to whether a traditional post and cam-style Posterior Stabilized total knee device is superior to a medial-pivot, more congruent device. However, the majority of surgeons seem to prefer the former, though there is a minority that uses the latter device with great success.

To date, there have been few prospective trials directly comparing these devices, and none with the latest generation of Total Knee Arthroplasty implants. Almost all such studies have been retrospective and/or utilizing older generation devices.

Interventions

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Medacta GMK Sphere® Medial Knee Prosthesis

There is no consensus within the Arthroplasty community as to whether a traditional post and cam-style Posterior Stabilized total knee device is superior to a medial-pivot, more congruent device. However, the majority of surgeons seem to prefer the former, though there is a minority that uses the latter device with great success.

To date, there have been few prospective trials directly comparing these devices, and none with the latest generation of Total Knee Arthroplasty implants. Almost all such studies have been retrospective and/or utilizing older generation devices.

Intervention Type DEVICE

Other Intervention Names

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Total Knee Arthroplasty Total Knee Prosthesis

Eligibility Criteria

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Inclusion Criteria

* Patients willing to sign the informed consent
* Patients able to comply with follow-up requirements including postoperative weight bearing restrictions and self evaluations.
* Male and non-pregnant female patients ages 21 - 80 years of age at the time of surgery.
* Patients requiring a primary total knee replacement.
* Patients with a diagnosis of osteoarthritis (OA), traumatic arthritis (TA), or avascular necrosis (AVN).
* Patients with intact collateral ligaments.

Exclusion Criteria

* Patients with inflammatory arthritis.
* Patients that are morbidly obese, body mass index (BMI) \> 40.
* Patients with a history of total or unicompartmental reconstruction of the affected joint.
* Patients that have had a high tibial osteotomy or femoral osteotomy.
* Patients with neuromuscular or neurosensory deficiency, which would limit the ability to assess the performance of the device.
* Patients with a systemic or metabolic disorder leading to progressive bone deterioration.
* Patients that are immunologically compromised, or receiving chronic steroids (\> 30 days).
* Patients bone stock is compromised by disease or infection, which cannot provide adequate support and/or fixation to the prosthesis.
* Patients with knee fusion to the affected joint.
* Patients with an active or suspected latent infection in or about the knee joint.
* Patients that are prisoners.

Minimum Eligible Age

21 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes