François Canovas1, Sophie Putman2, Julien Girard3, Olivier Roche4, François Bonnomet5, Pierre Le Béguec6. 1. Hôpital Lapeyronie, CHU Montpellier, 371 Avenue du Doyen Gaston Giraud, 34295, Montpellier Cedex, France. 2. Hôpital Roger Salengro, CHU Lille, 2 Avenue Oscar Lambret, 59037, Lille Cedex, France. Sophie.putman@wanadoo.fr. 3. Hôpital Roger Salengro, CHU Lille, 2 Avenue Oscar Lambret, 59037, Lille Cedex, France. 4. Centre Chirurgical Emile Gallé, 49 Rue Hermite, 54000, Nancy, France. 5. Hôpital de Hautepierre, CHU Strasbourg, Avenue Molière, 67098, Strasbourg Cedex, France. 6. , 11 Galeries du théâtre, 3500, Rennes, France.
Abstract
PURPOSE: The purpose of this study was to evaluate the outcomes of total hip arthroplasty (THA) revision with cementless stems using a numeric global radiological score (GRxS) that summarizes two previously validated scores: secondary bone stock (SBS) and osseointegration-secondary stability (O-SS). METHOD: One hundred fifty cases of THA were evaluated at a mean follow-up of 6.5 ± 3.7 years. The GRxS combines the SBS, which evaluated cortical bone thickness, bone density and bone defects in each Gruen zone and the O-SS, which evaluated the location and extent of a single radiolucent line. To calculate the GRxS, the SBS and O-SS were each expressed on a 10-point scale and given equal weighing. The final result was a number out of 20. The GRxS was used to assign a radiological grade to each THA case: very good (20), good (18-15), average (13-12), or poor (≤ 10). The numerical mean (Nm) was calculated for each grade. The inter- and intra-observer reproducibility was evaluated. RESULTS: The inter-observer reproducibility was good (0.8) and the intra-observer reproducibility was very good (0.9). The GRxS was considered very good in 46 cases (Nm 20), good in 57 cases (Nm 16.6), average in 25 cases and poor in 22 cases. There was a significant relationship between the GRxS and the Harris Hip and Postel Merle d'Aubigné scores (p < 0.0001), and the initial bone stock (p = 0.0001). CONCLUSIONS: The GRxS is reliable and reproducible. This information can be used by surgeons to adapt the surgical technique to bone characteristics (especially during revision cases) and to compare the outcomes of different implant designs.
PURPOSE: The purpose of this study was to evaluate the outcomes of total hip arthroplasty (THA) revision with cementless stems using a numeric global radiological score (GRxS) that summarizes two previously validated scores: secondary bone stock (SBS) and osseointegration-secondary stability (O-SS). METHOD: One hundred fifty cases of THA were evaluated at a mean follow-up of 6.5 ± 3.7 years. The GRxS combines the SBS, which evaluated cortical bone thickness, bone density and bone defects in each Gruen zone and the O-SS, which evaluated the location and extent of a single radiolucent line. To calculate the GRxS, the SBS and O-SS were each expressed on a 10-point scale and given equal weighing. The final result was a number out of 20. The GRxS was used to assign a radiological grade to each THA case: very good (20), good (18-15), average (13-12), or poor (≤ 10). The numerical mean (Nm) was calculated for each grade. The inter- and intra-observer reproducibility was evaluated. RESULTS: The inter-observer reproducibility was good (0.8) and the intra-observer reproducibility was very good (0.9). The GRxS was considered very good in 46 cases (Nm 20), good in 57 cases (Nm 16.6), average in 25 cases and poor in 22 cases. There was a significant relationship between the GRxS and the Harris Hip and Postel Merle d'Aubigné scores (p < 0.0001), and the initial bone stock (p = 0.0001). CONCLUSIONS: The GRxS is reliable and reproducible. This information can be used by surgeons to adapt the surgical technique to bone characteristics (especially during revision cases) and to compare the outcomes of different implant designs.
Entities:
Keywords:
Arthroplastie; Bone stock; Hip; Osseointegration; Revision
Authors: Olivier Roche; Julien Girard; François Canovas; Henri Migaud; François Bonnomet; Mathias Goldschild; Pierre Le Béguec Journal: Int Orthop Date: 2015-11-17 Impact factor: 3.075
Authors: M Tannast; G Zheng; C Anderegg; K Burckhardt; F Langlotz; R Ganz; K A Siebenrock Journal: Clin Orthop Relat Res Date: 2005-09 Impact factor: 4.176
Authors: Daniel F A de Menezes; Pierre Le Béguec; Hans-Peter Sieber; Mathias Goldschild Journal: Clin Orthop Relat Res Date: 2011-08-06 Impact factor: 4.176