Minima Clinical Study

A Multicentre, Prospective, Observational Clinical Study Evaluating the Outcomes of a Cementless Metaphyseal Short Stem After Hip Arthroplasty

Post-marketing clinical study,international, multi-centre, prospective, observational. The investigation will be carried out in 2 sites in Europe for a maximum total number of 160 patients.The aim of this study is to assess clinical, radiographic and subjective outcomes after hip arthroplasty with a cementless metaphyseal MINIMA short stem, define the survivorship of the implant and identify possible risk factors that may lead to failure.

Study Overview

• Status: Completed
• Conditions: Total Hip Arthroplasty
• Intervention / Treatment: Device: MINIMA stem

• Study Type: Observational
• Enrollment (Actual): 80

Contacts and Locations

Study Locations

• Italy
  • Milano, Italy, 20161
    • I.R.C.C.S. Galeazzi

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Patients will be selected for recruitment into the study from the general diagnosis population of patients requiring a primary hip arthroplasty, due to symptomatic painful degenerative joint diseases (NDJD). Patients requiring a revision of a previous failed stem cannot be enrolled into the clinical evaluation.

Description

Inclusion Criteria:

1. Both genders
2. Age ≥ 18 years old
3. Life expectancy over 5 years
4. Any race
5. Ambulatory patients
6. Painful primary coxarthrosis
7. Painful secondary coxarthrosis
8. Avascular necrosis
9. Willingness to comply with rehabilitation and study evaluation and ability to return for follow-up visits
10. Signed study-specific Informed Consent Form

Exclusion Criteria:

1. Body mass index over 28 kg/m2 for the modular version
2. Requiring revision of previous standard femoral stem
3. Symptomatic OA of the knees, spine, ankles or contralateral hip, if it can interfere with the evaluation of the target hip according to the Investigator
4. Previous hip replacement (resurfacing or THR) on the contralateral side and whose outcome is achieving an HHS< 60 points
5. Significant proven or suspicious infection of the target hip
6. Any serious infectious disease before the study according to the Investigator
7. Muscular insufficiency that may compromise functional recovery
8. Proven osteopenia and osteoporosis severe enough to compromise the stem support according to the Investigator
9. Known or suspicious hypersensitivity to the metal of the implant
10. Recurrent medical history of immune-mediated reactions or other systemic immune disorders
11. Vascular insufficiency or peripheral neuropathy of lower limbs severe enough to interfere with the study evaluation according to the Investigator
12. Current treatment or treatment for any malignancy within the previous 2 years before the preoperative visit
13. Previous organ transplant
14. Any intercurrent chronic disease or condition that may interfere with the completion of the 60-month follow-up, such as liver disease, severe coronary disease, or other clinically significant condition that the Investigator feels may affect the study evaluation
15. Known co-existent medical condition where death is anticipated within five years due to the pre-existing medical condition
16. Any clinically significant finding that would place the patient at health risk, impact the study, or affect the completion of the study
17. Current alcoholism, and/or any known current addiction to pain medications or drugs
18. Any psychiatric illness that would prevent comprehension of the details and nature of the study
19. Participation in any experimental drug/device study within the 6 months prior to the preoperative visit
20. Unwillingness or inability to comply with rehabilitation and to return for follow-up visits
21. Women of childbearing potential who are pregnant, nursing, or planning to become pregnant, and those who do not agree to remain on an acceptable method of birth control throughout the entire study period

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Harris Hip Score (HHS)	24 months
UCLA activity score	24 months
Time up and go test (TUG)	24 months
Range of motion (ROM)	24 months

Secondary Outcome Measures

Outcome Measure	Time Frame
Hip disability and Osteoarthritis Outcome Score (HOOS)	24 months
Implant stability measured by radiographic evaluations	24 months
Revision rate	24 months
Incidence of device-related Adverse Events/Serious Adverse Events	24 months

Other Outcome Measures

Outcome Measure	Time Frame
Mid-term clinical outcomes: Harris Hip Score and Hip disability and Osteoarthritis Outcome Score (HOOS)	60 months
Incidence of device-related Adverse Events and Serious Adverse Events	60 months
Survival rate (Kaplan Meier)	60 months

Collaborators and Investigators

• Sponsor: Limacorporate S.p.a
• Investigators: Principal Investigator: Luigi Zagra, I.R.C.C.S. Galeazzi

Study record dates

Study Major Dates

• Study Start: September 1, 2013
• Primary Completion (Actual): December 1, 2017
• Study Completion (Actual): February 1, 2023

Study Registration Dates

• First Submitted: March 31, 2015
• First Submitted That Met QC Criteria: April 7, 2015
• First Posted (Estimated): April 10, 2015

Study Record Updates

• Last Update Posted (Actual): April 23, 2024
• Last Update Submitted That Met QC Criteria: April 22, 2024
• Last Verified: April 1, 2024

More Information

Terms related to this study

• Other Study ID Numbers: H-11