They are implanted in revision hip arthroplasty with periprosthetic acetabular bone resorption in most of the cases in deficient dysplastic acetabula or in primary total hip arthroplasty on occasion. Müller Ring The Acetabular Roof Reinforcement Ring designed by ME.
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Acetabular reinforcement ring models were developed using a nonlinear three-dimensional finite element method.
Acetabular reinforcement ring. 86 patients with 90 revision arthroplasties and a mean age of 68 years 41 to 84 were included. The procedures include the cup-cage the Müller ring the Ganz Ring the Kerboull acetabular reinforcement device KARD the graft augmentation prosthesis GAP ring and the Burch-Schneider ring. Müller Rings have been implanted worldwide.
Acetabular reinforcement rings are used in particular for the reconstruction of large osteolytic defects of the acetabular bone stock and in cases of critical bone quality for standard cups due to osteoporosis or tumours. The acetabular bone defect is filled. Its success may be attributed to the fact that it is an integral part of the MEM prosthesis concept and translates.
Other devices such as trabecular augments custom-made cages or oblong cups are not discussed. Acetabular reinforcement rings are intended to be used in primary and revision surgeries where the acetabulum has the deficiencies of the acetabular roof anterior or posterior pillar medial wall deficiency andor protrusion as a result of the indications listed previously. The main focus of this overview is rings only.
The Ganz Ring Fig. Other devices such as trabecular augments custom-made cages or oblong cups are not discussed. Acetabular reinforcement rings cages Ganz Rings and Burch-Schneider Cages ARs are commonly used for reconstruction of severe bone defects in complex hip arthroplasty 1-5.
Reinforcement of the acetabulum using an acetabular roof reinforcement ring is indicated in total hip replacement in cases of osteoporosis rheumatoid arthritis acetabular. The Acetabular Roof Reinforcement Ring was designed by Prof. Cranial lip for the acetabular upper rim also useful for bone graft fixation in case a roof reconstruction is needed displasies.
Acetabular reinforcement rings cages AR are commonly used for reconstruction of bone defects in complex hip arthroplasty. The Kerboull acetabular reinforcement device consists of a 4-branched hemispherical cross made of 316L stainless steel which aims to guide and reinforce bony reconstruction of the acetabular cavity. The mean follow-up was 10 years range 7-12.
7 Indications for the CONTOUR Reinforcement Ring TheCONTOUR ReinforcementRingisused wherethebonedeficitsaresuchthatthe surgeoncanstillgetadequatesupport. Rings screwed to the ilium alone such as the Müller ring Protek Sulzer Orthopedics Ltd Baar Switzerland. Aim of this study was to measure the clinical and radiological longterm outcome after acetabular revision arthroplasty RTHA using the Müller acetabular reinforcement ring.
In this review we discussed the outcomes of acetabular reinforcement rings only used for reconstruction of the se-verely damaged acetabulum following primary THA. 1 also known as acetabular roof reinforcement ring with hook has been used by Ganz routinely for acetabular reconstruction since 1989. The primary assignment is the secure fixation of the ring to the vital bone.
And cages fixed to the ilium and the ischium such as the Burch-Schneider antiprotrusio cage Protek Sulzer Orthopedics Ltd. Müller has been in clinical use since 1977. It is designed for reconstruction of acetabular floor or cavitary defects and smaller defects of the lateral border of the acetabular rim.
The acetabular component studies show that an acetabular reinforcement ringiswarranted 2931 oranother acetabular reconstruction device ie tantalum cones tantalum cups. The main focus of this overview is rings only. Its shape results from the orthogonal crossing of 2 hemispherical plates.
Using a pre-prepared template we constructed without-hook and bone graft models of varying volumes and material properties. Acetabular Reinforcement Ring to be used as a reinforcement of the acetabular bony structure in order to accomodate a cemented acetabular cup. More than 183000 Original ME.
We use different acetabular reinforcement rings with differentiated indications. The objective of this study was to biomechanically determine the effect of the severity of acetabular dysplasia number and positions of screws and type of bone graft material used on the initial fixation strength of. Two types of acetabular reinforcement devices have been described 4.
Effect of Acetabular Reinforcement Ring With Hook for Acetabular Dysplasia Clarified by Three-Dimensional Finite Element Analysis. The procedures include the cup-cage the Müller ring the Ganz Ring the Kerboull acetabular reinforcement device KARD the graft augmentation prosthesis GAP ring and the Burch-Schneider ring.
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