Cementless Total Hip Arthroplasty Using the COREN Hip System: A Minimum Five-Year Follow-up Study

Area of Science:

• Orthopedic Surgery
• Biomaterials Engineering

Background:

• Total hip arthroplasty (THA) is a common procedure for hip joint diseases.
• Cementless implants offer potential advantages in long-term fixation and bone integration.

Purpose of the Study:

• To evaluate the clinical and radiological outcomes of cementless total hip arthroplasty using the COREN hip system.
• To assess implant fixation, patient-reported pain, and radiographic signs of loosening or osteolysis at a minimum 5-year follow-up.

Main Methods:

• A consecutive series of 181 primary THA procedures in 151 patients using the COREN hip system were retrospectively reviewed.
• Clinical assessment included Harris hip score and evaluation of thigh pain.
• Radiological assessment focused on implant fixation, radiolucent lines, osteolysis, and stress shielding.

Main Results:

• Significant improvement in mean Harris hip score from 59.4 to 97.2.
• No thigh pain reported; all implants showed stable fixation via bone ingrowth.
• Radiolucent lines observed in 7.7% of hips; osteolysis in 2.1%.

Conclusions:

• Cementless THA with the COREN hip system demonstrates very encouraging mid-term clinical and radiological results.
• The system provides reliable fixation and good functional outcomes, supporting its use in primary THA.