Prospective Multi-Center Study on Vanguard With E1 Bearing

N/ATerminatedNCT02088372

Zimmer Biomet200 enrolled

Overview

Evaluate Clinical Performance of Vanguard Knee with E1 Bearing in Korean Patient Population

E1™ Vitamin E doping of highly cross-linked polyethylene is a proposed method for insuring long-term oxidative stability of highly cross-linked ultra-high molecular weight polyethylene for use in total joint arthroplasty. In vitro research and development studies have shown that this material has improved wear performance, retention of mechanical properties, and a high resistance to oxidation due to the anti-oxidative properties of Vitamin E. Biomet Inc, has received FDA clearance to market tibial polyethylene components made of E1™ for use in the Vanguard total knee replacement system. Vanguard Total Knee System™ The Vanguard™ Knee System was designed to incorporate features from prior designs, including: ACG, Maxim, \& Ascent. The Vanguard Knee includes a streamlined design, rounded sagittal profile, and a deeper trochlear groove. The femoral component is available in Cruciate Retaining (CR), Posterior Stabilizing (PS), and Super Stabilized (SSK). Tibial Bearings are available in various levels of constraint required by the surgeon (CR, PS, AS, etc.). For this study, ONLY Vanguard with PS Bearing will be used. The purpose of the study is to evaluate clinical performance of Vanguard Knee with E1 Bearing in TKA in Korean patient population. The clinical performance will be evaluated based on patient outcomes, radiographic assessment and survivorship.

Study Type

OBSERVATIONAL

Enrollment

200

Conditions

Varus Deformity Valgus Deformity Posttraumatic Deformity Osteoarthritis, Knee Unspecified Disorder of Knee Joint

Interventions

Vanguard with E1 PS BearingDEVICE

Evaluate Clinical Performance of Vanguard Knee with E1 Bearing in Korean Patient Population

Eligibility

Sex: ALLMin age: 20 YearsMax age: 80 Years

Medical Language ↔ Plain English

Inclusion Criteria: Patients will be included in this study if they received Vanguard knee with E1 Bearing per the approved indications for use for Vanguard Knee. Specifically * Painful and disabled knee joint resulting from osteoarthritis or traumatic arthritis where one or more compartments are involved * Correction of varus, valgus, or posttraumatic deformity * Correction or revision of unsuccessful osteotomy Exclusion Criteria: Exclusion Criteria for this study should comply with the stated contraindications on package inserts of Vanguard™ Knee and the E1™ Tibial Bearing. These indications are stated below: Absolute contraindications include: infection, sepsis, osteomyelitis, and failure of a previous joint replacement Relative contraindications include: * Uncooperative patient or patient with neurologic disorders who are incapable of following directions, * Osteoporosis * Metabolic disorders which may impair bone formation * Osteomalacia * Distant foci of infections which may spread to the implant site * Rapid joint destruction, marked bone loss or bone resorption apparent on roentgenogram * Vascular insufficiency, muscular atrophy, neuromuscular disease * Incomplete or deficient soft tissue surrounding the knee

Locations (4)

Kangwon Nat'l Univ. Hospital

Chuncheon, South Korea

Chungnam Nat'l Univ. Hospital

Daejeon, South Korea

Gacheon Gil Univ. Gil Medical Center

Incheon, South Korea

Chonbuk Nat'l Univ. Hospital

Jeonju, South Korea

Outcomes

Primary Outcomes

Knee Society Score

scoring system to rate the knee and patient's functional abilities such as walking and stair climbing before and after TKA

Time frame: 1 year

Secondary Outcomes

Knee Sociey Score

scoring system to rate the knee and patient's functional abilities such as walking and stair climbing before and after TKA

Time frame: 6 Months

Knee Society Score

scoring system to rate the knee and patient's functional abilities such as walking and stair climbing before and after TKA

Time frame: 3 Years

Knee Society Score

scoring system to rate the knee and patient's functional abilities such as walking and stair climbing before and after TKA

Time frame: 5 Years

KOOS

Knee injuries \& Osteoarthritis Outcome Score

Time frame: 6 Months

KOOS

Knee injuries \& Osteoarthritis Outcome Score

Time frame: 1 Year

KOOS

Knee injuries \& Osteoarthritis Outcome Score

Time frame: 3 Years

KOOS

Knee injuries \& Osteoarthritis Outcome Score

Time frame: 5 Years

EQ5D

Data from ClinicalTrials.gov

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