What is Paprosky classification?

What is Paprosky classification?

The Paprosky classification is based on the amount of hip center migration and the integrity of four acetabular supporting structures as evaluated on preoperative AP radiographs of the pelvis [11, 14] (Fig. 2; Table 1).

What is the most common cause of revision THA?

The most common reasons for revision were acetabular loosening (30.1%), femoral loosening (23.7%), and polyethylene wear (24.7%). 8.3% of patients underwent primary THA with highly cross-linked polyethylene, while the remainder of the patients underwent THA when conventional polyethylene was used.

What is femoral impaction grafting?

Femoral impaction grafting is a reconstruction option applicable to both simple and complex femoral component revisions. It is one of the preferred techniques for reconstructing large femoral defects when the isthmus is non-supportive.

What is Protrusio?

Introduction. Protrusio acetabuli is a rare pathologic morphology of the hip in which the femoral head protrudes into the true pelvis [48]. It is a reported cause of hip pain and osteoarthritis in young adults [21].

What is the paprosky classification of femoral defects?

The Paprosky classification[5] of proximal femoral defects is used to assess the amount of bone loss and define the morphology of remaining proximal femoral bone stock; it also provides guidelines for treatment. Paprosky type I defects are characterized by minimal metaphyseal cancellous bone loss with intact diaphysis.

What are the different types of paprosky syndrome?

The Paprosky classification is divided into three types with increasingly severe degrees of bone loss; Types 2 and 3 are further divided into subtypes (Fig. 1). Type 1 defects have minimal focal bone loss with maintenance of the hemispheric shape of the acetabulum.

What is paprosky classification of acetabular bone loss?

Described in 1994, the Paprosky classification is a commonly used system for classifying acetabular bone loss in revision THA (Fig. 1) [11]. Open in a separate window Fig. 1A–F An artist’s renditions of the Paprosky classification of (A) Type 1, (B) Type 2A, (C) Type 2B, (D) Type 2C, (E) Type 3A, and (F) Type 3B acetabular bone loss are shown.

What is a type II femoral diaphysis defect?

In a type II defect, extensive loss of metaphyseal bone is seen with a completely intact femoral diaphysis. This type of defect is often present after the removal of loose cemented femoral component or in the early stage of loosening of a cementless femoral implant ( Fig. 93-2 ).