What is stem subsidence?

Subsidence is a known reason for early failure of total hip arthroplasty (THA) [1, 2]. In particular, cementless THA might be vulnerable to migration [1]. Subsidence is defined as a femoral stem distalization in reference to the major trochanter (Fig. 1a, b).

What type of stem is Corail?

CORAIL® Total Hip System The CORAIL® Stem has over 30 years of clinical experience and has been provided to over 2 million patients around the world. It remains the most widely implanted cementless stem1-3 and has 93.7% stem survivorship at 30 years.

What is a femoral stem?

Femoral stems can be made of cobalt–chromium or titanium alloys, whereas acetabular components can be made of either titanium or polyethylene. 4.14. Components of a standard total hip arthroplasty. The method of fixation of cup and stem to the bone distinguishes between cemented and cementless total hip arthroplasty.

What is Corail stem made of?

The Corail® stem is made of forged titanium alloy (TiAl6V4). It is a straight implant, with a quadrangular cross section. The proximal part is flared in the sagittal and the coronal plane to provide three-dimensional stabilisation in the metaphyseal area.

How is the Corail stem used in hip surgery?

The CORAIL Stem utilizes compaction broaching which is designed to preserve the blood supply to promote healing and growth of bone around the implant. This technique has shown 93.7% survivorship of the stem at 30 years. 4

What is the average subsidence of the femoral stem?

Radiographs taken post operatively and at one year were measured for subsidence of the stem. 13 patients had subsidence of the femoral stem of more than 2 mm. 5 of these were associated with fractures (mean age 78.06 years–average subsidence 14.52 mm), while 8 did not have associated fractures (mean age 77.43 years–average subsidence 4.99 mm).

How does the Corail stem help host cancellous bone?

The Stepped Geometry of the CORAIL Stem is designed to reduce shear forces and improve compression loading in host cancellous bone. The CORAIL Stem offers standard and high offset options which can enable femoral offset restoration and soft tissue tensioning.

Is the Corail femoral component in the elderly?

Subsidence of the Corail femoral component in the elderly. A retrospective radiological review Subsidence of the Corail femoral component in the elderly. A retrospective radiological review