Skip to content

A prospective Radiostereometric Analysis (RSA) study of the cementless Total Hip System (CL2 stem / C2 cup) in patients with degenerative hip disease.

A prospective Radiostereometric Analysis (RSA) study to predict long-term safety and effectiveness of the cementless Total Hip System (CL2 stem / C2 cup) in patients with degenerative hip disease.

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12610000811000
Enrollment
25
Registered
2010-09-29
Start date
2010-09-30
Completion date
Unknown
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The aim of this clinical study is to determine the safety and effectiveness of the Cementless Total Hip System (CL2 stem/C2 cup). This will be done by collecting information and data on measured outcomes on the Total Hip System, using the Radiostereometric Analysis (RSA) method to provide early results on the implant. The intended use of this implant is for patients with degenerative joint disease who require a primary total hip replacement.

Interventions

The CL2 is a cementless coated femoral stem made of titanium alloy. The stem tapers proximally to distally in order to achieve fixation within the patient femur, the stem body is 100% hydroxyapatite coated to aid in the biological fixation between the bone and the stem. The C2-cup is a cementless hemispherical shell made of titanium alloy. The shell has a sintered three-dimensional asymmetric titanium powered coating. The coating is an aid in the biological fixation between the bone and th

The CL2 is a cementless coated femoral stem made of titanium alloy. The stem tapers proximally to distally in order to achieve fixation within the patient femur, the stem body is 100% hydroxyapatite coated to aid in the biological fixation between the bone and the stem. The C2-cup is a cementless hemispherical shell made of titanium alloy. The shell has a sintered three-dimensional asymmetric titanium powered coating. The coating is an aid in the biological fixation between the bone and the titanium shell. The plastic liner is manufactured from highly cross-linked high molecular weight polyethylene that is manufactured by a 7.5 Mrad irradiation cycle, melt annealing and subsequent Ethylene Oxide sterilisation. It is manufactured in sizes to accept a 32 & 36mm femoral heads The locking mechanism is a tapered interference fit with locking lugs Surgical procedure is unilateral. Approximate duration of the surgical procedure time is 70 minutes. Theatre time is 2 hours.

Sponsors

Joint Research Pty Ltd
Lead SponsorCommercial sector/Industry

Study design

Allocation
Non-randomised trial
Intervention model
Single group
Primary purpose
Treatment
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1.Patient requires unilateral primary total hip arthroplasty due to non- inflammatory degenerative joint disease (e.g. osteoarthritis, traumatic arthritis, avascular necrosis, dysplasia/developmental dysplasia of the hip (DDH) who are candidates for an cementless total hip system as determined jointly by the surgeon and patient. 2.Have type A or type B femoral bone. 3.Male and non-pregnant female patients aged 18 to 75. 4.Patients who understand the conditions of the study and are willing and able to give written informed consent to participate in the length of the study including prescribed follow-ups.

Exclusion criteria

1.Patient has active infection or sepsis (treated or untreated). 2.Patient has any vascular insufficiency, muscular atrophy, or neuromuscular disease severe enough to compromise implant stability or postoperative recovery. 3.Patient is female of child-bearing age and not taking contraceptive precautions. 4.Patient has inadequate bone stock to support the device (e.g. severe osteopenia, family history of severe osteoporosis). 5.Patient has inflammatory joint disease (e.g. rheumatoid arthritis). 6.Patient has known moderate to severe renal insufficiency. 7.Patient has a known or suspected metal sensitivity. 8.Patient is immunosuppressed with diseases such as acquired immunodeficiency syndrome (AIDS) or receiving high doses of corticosteroids. 9.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, alcohol abuse. 10.Patient is severely overweight. Body Mass Index (BMI )> 40.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026