[Cementless total hip replacement type S.F.: mid-term results].

Area of Science:

• Orthopedic surgery
• Biomaterials engineering
• Medical device evaluation

Background:

• Cementless total hip replacement (THR) is a common procedure for hip arthritis.
• Evaluating the long-term outcomes of specific THR implants is crucial for clinical practice.
• The Beznoska type S.F. (Slavík, Fencl) is a cementless THR system.

Purpose of the Study:

• To assess the mid-term (5-year) clinical results and radiographic outcomes of the cementless Beznoska type S.F. total hip replacement.
• To evaluate the experience with this specific implant in a cohort of 40 patients.

Main Methods:

• A retrospective study of 40 patients who underwent cementless THR with the Beznoska S.F. implant.
• Patients were evaluated at an average of 62.5 months post-surgery.
• Outcomes were assessed using the Harris Hip Score (HHS) and radiographic evaluation of component stability and osteointegration.

Main Results:

• Excellent primary fixation of all components was observed.
• No dislocations or acetabular liner loosening occurred. One periprosthetic fracture and one polyethylene liner exchange for wear were reported.
• At 5 years, 38 stems were stable, with good osteointegration in most cases. Mean HHS improved from 45.6 to 90.3.

Conclusions:

• The Beznoska S.F. cementless THR demonstrates satisfactory mid-term clinical results and good osteointegration.
• Proper surgical technique is essential for achieving optimal press-fit fixation.
• The implant is suitable for dysplastic acetabula, and careful component sizing is important to avoid complications like stress shielding or poor osteointegration.