scholarly journals Risk factors for avascular necrosis after closed reduction for developmental dysplasia of the hip

2016 ◽  
Vol 10 (3) ◽  
pp. 185-192 ◽  
Author(s):  
Mathew D. Schur ◽  
Christopher Lee ◽  
Alexandre Arkader ◽  
Anthony Catalano ◽  
Paul D. Choi
Keyword(s):  
Risk Factors ◽  
Avascular Necrosis ◽  
Closed Reduction ◽  
Developmental Dysplasia ◽  
Dysplasia Of The Hip

scholarly journals Efficacy of closed reduction for developmental dysplasia of the hip: midterm outcomes and risk factors associated with treatment failure and avascular necrosis

2020 ◽  
Author(s):  
Ge Zhang ◽  
Ming Li ◽  
Xiangyang Qu ◽  
Yujiang Cao ◽  
Xing Liu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Avascular Necrosis ◽  
Failure Rate ◽  
Closed Reduction ◽  
Significant Risk ◽  
Developmental Dysplasia ◽  
Secondary Outcome ◽  
Factors Associated ◽  
Related Risk ◽  
Dysplasia Of The Hip

Abstract Background: The purpose of this study was to evaluate the efficacy after closed reduction (CR) in the treatment of developmental dysplasia of the hip (DDH) and investigate risk factors associated with CR failure and avascular necrosis (AVN) occurrence in the follow-ups.Primary and secondary outcome measures: The study retrospectively included 110 patients and 138 hips with DDH diagnosis between February 2012 and November 2015 in our single tertiary medical institution and underwent closed reduction. The failure rate of CR and the underlying risk factors were evaluated. meanwhile, the incidence of AVN and the related risk factors among the successful CR cases were assessed.Results: The overall failure rate of DDH treated by CR in present study was 31.16% (43/138). Risk factors for the CR failure was older age at the time of CR (≥18.35 month), large medical interval before CR (≥35.35 millimeters), and severer dislocation of the affected hip (IDHI grade III and IV). The incidence of AVN was 8.33% (6/72) in the patients with successful CR at last follow-up. No significant risk factors had been established in present study that associated with the AVN occurrence.Conclusions: For the treatment of DDH with CR, patients with younger age might achieve better outcomes, early diagnosis and early treatment might be the key point in the DDH treatment.

scholarly journals Efficacy of closed reduction for developmental dysplasia of the hip: midterm outcomes and risk factors associated with treatment failure and avascular necrosis

2020 ◽  
Author(s):  
Ge Zhang ◽  
Ming Li ◽  
Xiangyang Qu ◽  
Yujiang Cao ◽  
Xing Liu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Avascular Necrosis ◽  
Failure Rate ◽  
Closed Reduction ◽  
Significant Risk ◽  
Developmental Dysplasia ◽  
Factors Associated ◽  
Related Risk ◽  
Younger Age ◽  
Dysplasia Of The Hip

Abstract Background: The purpose of this study was to evaluate the efficacy after closed reduction (CR) in the treatment of developmental dysplasia of the hip (DDH) and to investigate risk factors associated with CR failure and avascular necrosis (AVN) occurrence in follow-ups. Mehtods: The study retrospectively included 110 patients and 138 hips with DDH diagnosis that underwent closed reduction between February 2012 and November 2015 in our single tertiary medical institution. The failure rate of CR and the underlying risk factors were evaluated. Meanwhile, the incidence of AVN and the related risk factors among the successful CR cases were assessed.Results: The overall failure rate of DDH treated by CR in present study was 31.16% (43/138). Risk factors for the CR failure was older age at the time of CR (≥18.35 month), large medical interval before CR (≥35.35 millimeters), and severer dislocation of the affected hip (IDHI grade III and IV). The incidence of AVN was 8.33% (6/72) in the patients with successful CR at last follow-up. No significant risk factors had been established in present study that associated with the AVN occurrence.Conclusions: For the treatment of DDH with CR, patients with younger age might achieve better outcomes, early diagnosis and early treatment might be the key point in the DDH treatment.

scholarly journals Efficacy of closed reduction for developmental dysplasia of the hip: midterm outcomes and risk factors associated with treatment failure and avascular necrosis

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Ge Zhang ◽  
Ming Li ◽  
Xiangyang Qu ◽  
Yujiang Cao ◽  
Xing Liu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Avascular Necrosis ◽  
Failure Rate ◽  
Closed Reduction ◽  
Significant Risk ◽  
Developmental Dysplasia ◽  
Factors Associated ◽  
Related Risk ◽  
Younger Age ◽  
Dysplasia Of The Hip

Abstract Background The purpose of this study was to evaluate the efficacy of closed reduction (CR) in the treatment of developmental dysplasia of the hip (DDH) and to investigate risk factors associated with CR failure and avascular necrosis (AVN) occurrence in follow-ups. Methods The study retrospectively included 110 patients and 138 hips with DDH diagnosis that underwent closed reduction between February 2012 and November 2015 in our single tertiary medical institution. The failure rate of CR and the underlying risk factors were evaluated. Meanwhile, the incidence of AVN and the related risk factors among the successful CR cases were assessed. Results The overall failure rate of DDH treated by CR in the present study was 31.16% (43/138). Risk factors for the CR failure were older age at the time of CR (≥ 18.35 month), large medical interval before CR (≥ 35.35 mm), and severer dislocation of the affected hip (IDHI grades III and IV). The incidence of AVN was 8.33% (6/72) in patients with successful CR at the last follow-up. No significant risk factors had been established in the present study that associated with the AVN occurrence. Conclusions For the treatment of DDH with CR, patients with younger age might achieve better outcomes; early diagnosis and early treatment might be the key point in the DDH treatment.

Evaluation of avascular necrosis risk factors after closed reduction for developmental dysplasia of the hip before walking age

2020 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Celal Bozkurt ◽  
Baran Sarikaya ◽  
Serkan Sipahioğlu ◽  
Baki Volkan çetin ◽  
Pelin Zeynep Bekin Sarikaya ◽  
...  
Keyword(s):  
Risk Factors ◽  
Avascular Necrosis ◽  
Closed Reduction ◽  
Developmental Dysplasia ◽  
Walking Age ◽  
Dysplasia Of The Hip

scholarly journals Efficacy of closed reduction for developmental dysplasia of the hip: midterm outcomes and risk factors associated with treatment failure and avascular necrosis

2020 ◽  
Author(s):  
Ge Zhang ◽  
Ming Li ◽  
Xiangyang Qu ◽  
Yujiang Cao ◽  
Xing Liu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Avascular Necrosis ◽  
Failure Rate ◽  
Closed Reduction ◽  
Significant Risk ◽  
Developmental Dysplasia ◽  
Factors Associated ◽  
Related Risk ◽  
Younger Age ◽  
Dysplasia Of The Hip

Abstract Background: The purpose of this study was to evaluate the efficacy after closed reduction (CR) in the treatment of developmental dysplasia of the hip (DDH) and to investigate risk factors associated with CR failure and avascular necrosis (AVN) occurrence in follow-ups. Mehtods: The study retrospectively included 110 patients and 138 hips with DDH diagnosis that underwent closed reduction between February 2012 and November 2015 in our single tertiary medical institution. The failure rate of CR and the underlying risk factors were evaluated. Meanwhile, the incidence of AVN and the related risk factors among the successful CR cases were assessed.Results: The overall failure rate of DDH treated by CR in present study was 31.16% (43/138). Risk factors for the CR failure was older age at the time of CR (≥18.35 month), large medical interval before CR (≥35.35 millimeters), and severer dislocation of the affected hip (IDHI grade III and IV). The incidence of AVN was 8.33% (6/72) in the patients with successful CR at last follow-up. No significant risk factors had been established in present study that associated with the AVN occurrence.Conclusions: For the treatment of DDH with CR, patients with younger age might achieve better outcomes, early diagnosis and early treatment might be the key point in the DDH treatment.

scholarly journals Contact Pressure Distribution of the Hip Joint During Closed Reduction of Developmental Dysplasia of the Hip

2020 ◽  
Author(s):  
Zhiqiang Zhang ◽  
Hai Li ◽  
Dashan Sui ◽  
Haiyi Qin ◽  
Ziming Zhang
Keyword(s):  
Finite Element ◽  
Femoral Head ◽  
Avascular Necrosis ◽  
Contact Pressure ◽  
Closed Reduction ◽  
Treatment Success ◽  
Developmental Dysplasia ◽  
Abduction Angle ◽  
Lateral Part ◽  
Dysplasia Of The Hip

Abstract Background: Developmental dysplasia of the hip (DDH) is the most common deformity of the lower extremity in children, and the etiology remains unclear. The biomechanical change during closed reduction (CR) focused on cartilage contact pressure (CCP) has not been studied. Thereby, we try to provide insight into biomechanical factors potentially responsible for CR treatment success and complications by using finite element analysis (FEA) for the first time.Methods: Finite element models of one patient with DDH were established based on the data of MRI scan on which cartilage contact pressure was measured. During CR, CCP between the femoral head and acetabulum in different abduction and flexion angles were tested to estimate the efficacy and potential risk factors of avascular necrosis (AVN) following CR.Results: A 3D reconstruction by the FEA method was performed on a sixteen-month-old girl with DDH on the right side. The acetabulum of the involved side showed a long, narrow, and "plate-shaped" deformity, whereas the femoral head was smaller and irregular compared with the contralateral side. With increased abduction angle, the stress of the posterior acetabulum increased significantly, and the stress on the lateral part of the femoral head increased as well. The changes of CCP in the superior acetabulum were not apparent during CR. There were no detectable differences in terms of pressure on the femoral head.Conclusions: Severe dislocation (IHDI grade III and IV) in children showed a high mismatch between the femoral head and acetabulum. Increased abduction angle corresponded with high contact pressure, which might relate to avascular necrosis, whereas increased flexion angle was not. Enhanced pressure on the lateral part of the femoral head might increase the risk of AVN.

scholarly journals Timing for Closed Reduction Procedure for Developmental Dysplasia of the Hip and its Failure Analysis

2020 ◽  
Author(s):  
Zhiqiang Zhang ◽  
Hao Li ◽  
Hai Li ◽  
Ziming Zhang
Keyword(s):  
Risk Factors ◽  
Closed Reduction ◽  
Age Groups ◽  
Significant Risk ◽  
Developmental Dysplasia ◽  
Operating Characteristics ◽  
Logistic Regression Models ◽  
Midterm Outcome ◽  
Group I ◽  
Dysplasia Of The Hip

Abstract Background It remains controversial whether the older age to perform closed reduction (CR) procedure for developmental dysplasia of the hip (DDH), the higher incidence of complications. The aim of this study is to evaluate the midterm outcome of CR for DDH among difference age groups, and to analyze and identify risk factors for the failure of this procedure. Methods Clinical data of 107 DDH patients, who received CR, were retrospectively reviewed. Data were divided into three groups according to initial treatment age (Group I: younger than 12 months; Group II: 12 months to less or equal to18 months; Group III: older than 18 months). The presence of avascular necrosis (AVN), residual acetabular dysplasia (RAD), re-dislocation, and further surgeries (FS) were observed. The risk factors were identified for those outcomes aforementioned using univariable logistic regression models. For identified risk factor age, pre-op acetabular index (AI) and post-op AI, their prediction of CR failure were evaluated by receiver operating characteristics curve (ROC).Results A total of 107 patients (156 hips) undergoing CR procedure were evaluated with a median age at initial reduction of 13.0±5.4 months (range, 4 to 28 mo). Mean follow-up time in this study was 6.7±0.8 years (range, 3-8 years). The incidence of AVN, RAD and re-dislocation was 15.4% (24/156), 17.3% (27/156) and 14.7% (23/156) respectively. For AVN, RAD and re-dislocation, the significant risk factors are pre-op IHDI IV (p=0.033), age≥18 months (p=0.012), and pre-op IHDI IV (p=0.004) and walking (p=0.011), respectively. The areas under the ROC curve of each type of failures were 0.841 (post-op AI), 0.688 (pre-op AI) and 0.650 (age).Conclusions Severe DDH patients older than 18 months with CR procedure may result in a high risk of RAD complication. Re-dislocation is significantly associated with pre-op IHDI IV and walking. Patients, who are older than 12.5 months or have a pre-op AI of 38.7° or a post-op AI of 26.4°, are also more likely to fail of CR procedure.

scholarly journals Closed Reduction in Developmental Dysplasia of the Hip in Patients Older than One Year

Folia Medica ◽  
2020 ◽  
Vol 62 (2) ◽  
pp. 276-281
Author(s):  
Zoran Bozinovski ◽  
Milena Bogojevska Doksevska ◽  
Keti P. Tokmakova
Keyword(s):  
Avascular Necrosis ◽  
Closed Reduction ◽  
Screening Method ◽  
Hip Dislocation ◽  
Developmental Dysplasia ◽  
Type I ◽  
Range Of Movement ◽  
Cast Immobilization ◽  
Recommended Treatment ◽  
Dysplasia Of The Hip

Introduction: Besides an effective screening method for developmental dysplasia of the hip, there is certain number of children in whom the condition has been overseen or they have never been screened and the parents have noticed the odd walking pattern in their toddler. Treatment of such patients is controversial. One of the recommended treatment methods because of the short-term hospitalization, but often considered unsuccessful is closed reduction of the hip followed by cast immobilization. Hypothesis: Closed hip reduction in late diagnosed developmental dysplasia of the hip gives good results.  Aim: Our aim in this retrospective study was evaluation of the success of the treatment with closed reduction of hip dislocation in children older than 12 months.  Patients and methods: In the study, we included 20 patients treated at our clinic from June 2004 to May 2017. Of these 20 patients, 8 had bilateral involvement, 12 had unilateral, in a total of 28 hips. In all patients we noted preoperatively the range of movement, the presence of limp, any limb inequality, and hip pain. We used clinical and radiological parameters for evaluation. Clinically, we examined the range of movement, limb inequality as well as limb function and we classified it according to the modified McKay’s criteria. Same examinations were done at 1, 3, and 5 years after closed reduction. Results: At the last follow-up examination, using McKey’s criteria for clinical evaluation we rated the hips in two patients (7%) as grade III, i.e. fair grade, 10 hips (36%) were grade II – rated good, and 16 hips (57%) were evaluated as grade I. In four hips, there were signs of avascular necrosis of the hip, while in one patient the avascular necrosis developed after the closed reduction. Radiographic assessment (Figs 3, 4) using Severin’s scoring system showed no hips with types V and VI, type IV was observed in 7%, type III in 21%, type II in 29%, while most of the hips (12, 43%) were type I. Conclusion: We concluded that the procedure was justified. An advantage of this method is that it is inexpensive; it entails no direct operative changes of the bone structures and gives good results.

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