Metal-on-metal dysplasia cup total hip arthroplasty for hip osteoarthritis secondary to developmental dysplasia of the hip

Baki, Mehmet Emre; Timurkaynak, Alper; Aydin, Hafız; Baki, Celål

doi:10.5606/ehc.2014.32

Cited by 8 publications

(10 citation statements)

References 19 publications

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“…It is still a challenge for orthopedists to restore hip rotation center anatomically in primary THA for patients with DDH , due to complicated acetabular changes [8][9]. It has been widely accepted and advocated that acetabular prosthesis should be installed anatomically and the hip rotation center should be restored [10][11][12][13] .…”

Section: Discussionmentioning

confidence: 99%

How to Restore Rotation Center in Total Hip Arthroplasty for Developmental Dysplasia of the Hip with the Assistance of Three Dimensional Printing Technology? A Pilot Study

Zhang

Liu

et al. 2020

Preprint

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Background: It is technically challenging to restore hip rotation center exactly in total hip arthroplasty (THA) for patients with end-stage osteoarthritis secondary to developmental dysplasia of the hip (DDH) due to the complicated acetabular morphology changes.In this study, we developed a new method to restore hip rotation center exactly and rapidly in THA with the assistance of three dimensional (3-D) printing technology.Methods: Seventeen patients (21 hips) with end-stage osteoarthritis secondary to DDH who underwent THA were included in this study. Simulated operations were performed on 3-D printed hip models for preoperative planning. The Harris fossa and acetabular notches were recognized and restored to locate acetabular center. The agreement in the size of acetabular cup and bone defect between simulated operations and actual operations were analyzed.Clinical and radiographic outcomes were recorded and evaluated.Results: The sizes of the acetabular cup of simulated operations on 3-D printing models showed a high rate of coincidence with the actual sizes in the operations(ICC value=0.930) There was no significant difference statistically between the sizes of bone defect in simulated operations and the actual sizes of bone defect in THA( t value=0.03，P value=0.97). The average Harris score of the patients was improved from (38.33±6.07) preoperatively to the last follow-up (88.61±3.44) postoperatively.The mean vertical and horizontal distances of hip rotation center on the pelvic radiographs were restored to (15.12 ± 1.25）mm and ( 32.49±2.83) mm respectively. No case presented dislocation or radiological signs of loosening until last follow-up.Conclusions: The application of 3-D printing technology faciliate orthopedists to recognize the morphology of Harris fossa and acetabular notches , locate the acetabular center and restore the hip rotation center rapidly and acurately.

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Section: Discussionmentioning

confidence: 99%

How to Restore Rotation Center in Total Hip Arthroplasty for Developmental Dysplasia of the Hip with the Assistance of Three Dimensional Printing Technology? A Pilot Study

Zhang

Liu

et al. 2020

Preprint

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“…Baki et al . used metal‐on‐metal (MoM) components to treat 27 mid or high dislocations of the hip, and during an average 34 months of follow‐up, no revision was required.…”

Section: Confirmation Of Acetabular Positionmentioning

confidence: 99%

Preoperative Planning for Total Hip Arthroplasty for Neglected Developmental Dysplasia of the Hip

Shi

Cheng

et al. 2019

Orthopaedic Surgery

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Developmental dysplasia of the hip (DDH) is accompanied by morphological alterations on both the acetabular and the femoral side. Total hip arthroplasty (THA) provides effective treatment in cases of neglected DDH but requires elaborate preoperative planning. To determine the morphological changes resulting from the dysplasia, the anatomic acetabular position, the height of the femur head dislocation, the height of the femur head dislocation, and the combined anteversion must all be established. In addition, a vital and complicated process of strategizing leg length balance must be conducted in cases of severe DDH. Each type of leg length discrepancy (LLD), including bony and functional and anatomical LLD, should be evaluated in the context of the presence or absence of a fixed pelvic tilt. Moreover, with severe unilateral dislocated hips, a more inferior change in the original rotational center of the hip must be accounted for. Due to these multiple morphological changes, the accurate size of the prosthesis and the cup position are difficult to predict. In comparison with other methods, CT scan‐based 3‐dimensional templating provides the best accuracy. Despite the presence of anatomic alterations, various types of acetabular and femoral prostheses have been developed to treat hip dysplasia. Both cemented and cementless cups are used in DDH cases. In DDH accompanied by insufficient acetabular bone stock, a cemented cup combined with bone graft provides a reliable treatment. Monoblock stems can be used when the combined anteversion is less than 55°, and a modular stem system when this parameter is greater than 55°. Customized stems can be designed for DDH coupled with severe proximal femoral distortion. A ceramic‐on‐ceramic bearing is considered optimal for young DDH patients.

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“…Developmental dysplasia of the hip (DDH) is an important disease which causes many comorbidities especially osteoarthritis [1][2][3][4][5]. Although there is no exact statistical data, developmental dysplasia of the hip (DDH) is seen at a frequency between 0.5% and 1.5% in Turkey [6].…”

Section: Introductionmentioning

confidence: 99%

What is the ideal time for hip sonography screening?

2020

Ann Clin Anal Med

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Aim: The necessity of hip sonography scan is accepted by all authors. However, there is no clear information about when the scan is required. In this study, we tried to find out the most appropriate time for screening and reported our results of hip sonography performed in our clinic. Materials and Methods: Records of 351 infants were retrospectively investigated, and spontaneous correction in developmentally retarded hips was evaluated by Graf's method. Ages of infants were between 3-29 days; the average age was 11 days. Results: Three hundred and eighty hips were evaluated as type 1 (%54). Babies who were evaluated at three and four weeks of age, the ones that assessed as types 2c, d, 3 and 4 got initial treatment. Fourteen hips of 11 babies received treatment. All of the type 2a+ (71 hips) and all but two of type 2a-(82, %97.6) had become type 1 without treatment. Among 11 hips that were type 3 at week one, 3 type 3 hips of two babies that came back for control, returned to normal without treatment. Even the hips considered type 2c in this age group can return to normal without treatment. Discussion: According to our dataset, because hips that were evaluated as undeveloped at the first screening returned to normal at an average of 7 weeks, the ideal time for screening is 7th week of life.

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Metal-on-metal dysplasia cup total hip arthroplasty for hip osteoarthritis secondary to developmental dysplasia of the hip

Cited by 8 publications

References 19 publications

How to Restore Rotation Center in Total Hip Arthroplasty for Developmental Dysplasia of the Hip with the Assistance of Three Dimensional Printing Technology? A Pilot Study

How to Restore Rotation Center in Total Hip Arthroplasty for Developmental Dysplasia of the Hip with the Assistance of Three Dimensional Printing Technology? A Pilot Study

Preoperative Planning for Total Hip Arthroplasty for Neglected Developmental Dysplasia of the Hip

What is the ideal time for hip sonography screening?

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