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Original papers

Conversion from failed hemiarthroplasty to total hip arthroplasty: A Norwegian Arthroplasty Register analysis of 595 hips with previous femoral neck fractures

, , , , , & show all
Pages 711-718 | Received 27 Mar 2006, Accepted 21 Dec 2006, Published online: 08 Jul 2009

Figures & data

Table 1.  Descriptive statistics of the conversion procedures, all other primary operations in the register, and stem revisions in the register (only for patients aged 60 years and older)

Figure 1. Breakdown of conversion THA and all other primary operations in the arthroplasty register: the group of 473 conversions with stem exchange received a revision femoral stem and a primary acetabular cup. The group of 122 conversions with retention of the stem received only a primary acetabular cup.

Figure 1. Breakdown of conversion THA and all other primary operations in the arthroplasty register: the group of 473 conversions with stem exchange received a revision femoral stem and a primary acetabular cup. The group of 122 conversions with retention of the stem received only a primary acetabular cup.

Figure 2. Survival curves for the conversion procedures and control groups from the total arthroplasty register as described in , adjusted for age, sex, cemented or uncemented implants and indication for index operation. A. Prosthesis survival of all 595 conversions and all other primary arthroplasties. B. Acetabular cup survival of all 595 conversions and all other primary arthroplasties. C. Femoral stem survival of the 473 conversions with stem exchange and all revision stems. D. Prosthesis survival of the 122 conversions with retention of the stem and the 473 conversions with stem exchange.

Figure 2. Survival curves for the conversion procedures and control groups from the total arthroplasty register as described in Figure 1, adjusted for age, sex, cemented or uncemented implants and indication for index operation. A. Prosthesis survival of all 595 conversions and all other primary arthroplasties. B. Acetabular cup survival of all 595 conversions and all other primary arthroplasties. C. Femoral stem survival of the 473 conversions with stem exchange and all revision stems. D. Prosthesis survival of the 122 conversions with retention of the stem and the 473 conversions with stem exchange.

Table 2.  Kaplan–Meier survival at 5 and 10 years with relative risk (RR) of groups compared according to

Table 3.  39 revisions in 473 conversions with stem exchange. Procedures are listed by indication for revision surgery (with multiple entries allowed)

Table 4.  16 revisions in 122 conversions with retention of the stem. Procedures are listed by indication for revision surgery (with multiple entries allowed)

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