Spartan Stem, World Cup and World Liner Post Market Clinical Follow-up Study

Study Overview
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Brief Summary
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The aim of the study is to monitor the performance of the Signature Orthopaedics Spartan Stem, World Acetabular Cup and World Liner as a post-market vigilance and continuous improvement efforts.

Detailed Description
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The objective of this PMCF Study is to collect data confirming safety, performance and clinical benefits of the Spartan Stem, World Acetabular Cup and the World Liner when used for primary total hip arthroplasty at 2-years follow-up. The study includes pre-operative, operative, discharge, 1 year post-operative evaluations, where data concerning the performance and safety of the device are gathered. The revision rate of the components will be monitored as the primary objective, along with pre and post operative measurement of the Oxford Hip Score (OHS), patient-reported outcome measure (PROM) to quantify patient satisfaction. Radiography analysis will be done to monitor bony response to the implant and qualify the effectiveness of the cementless fixation.

Official Title
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Spartan Stem, World Cup and World Liner Post Market Clinical Follow-up Study

Conditions
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Hip Replacement

Intervention / Treatment
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* Device: Spartan Stem, World Acetabular Cup and World Liner


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: patient requires unilateral primary total hip arthroplasty due to non-inflammatory degenerative joint disease (e.g., osteoarthritis, traumatic arthritis, avascular necrosis, dysplasia/DDH) patient must be a candidate for use of the products studied, as determined jointly by the surgeon and patient. male and non-pregnant female patients aged 18-75 patients who understand the conditions of the clinical evaluation and are willing to participate for the length of the prescribed follow-up. Exclusion Criteria: patient has active infection or sepsis(treated or untreated) enough to compromise implant stability or postoperative recovery patient is a female of child-bearing age and not taking and not taking contraceptive pills patient has inadequate bone stock to support the device (e.g. severe osteopenia, family history of severe osteoporosis or osteopenia) patient has a known or suspected metal sensitivity patient is immuno-suppressed with disease such as AIDS or is receiving high dose of cortico-steroids. patient has an emotional or neurological condition that would pre-empt their ability or unwillingness to participate in the clinical evaluation including mental illness, mental retardation or drug abuse patient is severely overweight with a BMI>40.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Device: Spartan Stem, World Acetabular Cup and World Liner|The Spartan Stem is a wedge-shaped fit and fill design stem with Titanium Plasma Spray(TPS) and Hydroxyapatite (HA) coating. The World Acetabular cup is Porous coated and mated with cross-linked polyethylene World Liner|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Spartan Stem, World Acetabular Cup and World Liner Survival Rate | The implant survival rate is based on removal of the device for any reason as determined following the Kaplan-Meier method. | up to 2 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Oxford Hip Score (OHS) | The OHS is a patient reported outcome measure (PROM) used to quantify patient satisfaction with the treatment. It consists of 12 questions scored 1 to 5 by the patient. | up to 2 years |