United States Patent 5,259,249 | Date of Patent: November 9, 1993
Hip Joint Femoral Component Endoprosthesis Test Device
 

The Effect of a Lateral Flare Feature on Implant Stability
Alex Leali, Joseph Fetto, Harvey Insler and David Elfenbein

Abstract We reviewed the X-rays of 109 patients with 115 primary total hip replacements utilizing a lateral flare cementless stem to assess axial migration and stability. The average follow-up was 48.6 (24-104) months. The average subsidence at 2 years was 0.32 mm, remaining at a level below 1 mm for the duration of the followup. Even though there were ten reoperations involving either the change of a polyethylene liner and the acetabular component, or both, none of the patients required a femoral stem revision. It was concluded that the proximal geometry of the stem provides significant initial stability, which seems to be preserved throughout a long follow-up period.

Articles

Article from International Orthopaedics.  
 

Preservation of femoral bone mass after total hip replacements with a lateral flare stem

The effect of lateral flare feature on implant stability

Evolution of the Koch model of the biomechanics of the hip
 

Promising mid-term results of total hip arthroplasties using an uncemented lateral-flare hip prosthesis: a clinical and radiographic study 

Favorable Midterm Results of Total Hip Arthroplasties with a Lateral Flare Uncemented Stem

Correction of Severe Valgus Deformity with Non-Constrained Total Knee Arthroplasty Design

International Society for Technology in Arthroplasty


Electronic Measurement of Soft Tissue Balancing Reduces Lateral Releases in Total Knee Arthroplasty
 

Correction of Severe Valgus Deformity with Non-Constrained Total Knee Arthroplasty Design

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