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Liu J, Gao T, Li J, Shan H, Pan S. Evaluation of the short-term curative effect of closed reduction in the treatment of developmental dysplasia of the hip based on three-dimensional magnetic resonance imaging finite element analysis. BMC Musculoskelet Disord 2022; 23:455. [PMID: 35568888 PMCID: PMC9107141 DOI: 10.1186/s12891-022-05401-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 05/05/2022] [Indexed: 11/13/2022] Open
Abstract
Background Based on the Digital Imaging and Communications in Medicine (DICOM) data of three-dimensional magnetic resonance imaging (3D-MRI), finite element models of the hip joints of children with developmental dysplasia of the hip were established. The primary objectives included simulation and analysis of the finite element model pre- and post-closed reduction under different stances and loads, and evaluation of the size and distribution of von Mises stress in the acetabulum and femoral head pre- and post-operation and the short-term effects. Methods Acetabular index measurements of both the unaffected and affected sides were conducted, alongside International Hip Dysplasia Institute (IHDI) classification of the affected hip. Establishing the finite element model of both the affected and unaffected hips was based on the 3D-T1WI sequence DICOM data, using Mimics, 3-matic, and Ansys software, before and after closed reduction surgery. The size and distribution data of von Mises stress on the affected side of the acetabulum and femoral head were collected pre- and post-operation. Results The study indicated that the increasing acetabular index of the affected hip was directly proportional to the increasing severity based on IHDI classification (P < 0.05). Preoperative IHDI classification significantly correlated with the von Mises stress (r = 0.560–0.569, 0.562–0.564, P < 0.05). Under different stances and load conditions, the von Mises stress on the affected side post-operation was lower than that noted pre-operation (P < 0.01), while that on the acetabulum increased proportionally to the load. Although the magnitude and distribution of von Mises stress on the affected side of the acetabulum were similar to those on the healthy side post-operation, there were statistical differences between the two (P < 0.01). The von Mises stress of the lateral column of the femoral head post-operation was significantly lower than that noted pre-operation (P < 0.01). While the high-stress points of the lateral column disappeared post-operation, the von Mises stress was evenly distributed in the femoral head. Conclusions The 3D-MRI finite element could provide the von Mises stress value and distribution characteristics of the acetabulum and femoral head pre- and post-operation. Closed reduction can, therefore, improve the size and distribution of von Mises stress on the affected acetabulum and femoral head.
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Affiliation(s)
- Jiani Liu
- Department of Radiology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, China
| | - Tianyang Gao
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China.
| | - Jia Li
- School of Mechanical Engineering and Automation, Northeastern University, Shenyang, China
| | - Hui Shan
- School of Mechanical Engineering and Automation, Northeastern University, Shenyang, China
| | - Shinong Pan
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China
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Bozkurt C, Sarikaya B, Sipahioğlu S, Çetin BV, Bekin Sarikaya PZ, Kaptan AY, Altay MA. Evaluation of avascular necrosis risk factors after closed reduction for developmental dysplasia of the hip before walking age. J Pediatr Orthop B 2022; 31:237-241. [PMID: 34116555 DOI: 10.1097/bpb.0000000000000846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Avascular necrosis (AVN) of the femoral head is one of the most important complications after closed reduction and spica cast application in developmental dysplasia of the hip (DDH) treatment. This study aims to put forth the impact of closed reduction age and other factors which can cause AVN. Inclusion criteria of the study were: closed reduction and spica cast application before walking age (12 months) and minimum 2 years duration of follow-up. The presence of femoral head ossific nucleus, International Hip Dysplasia Institute (IHDI) score, acetabular indices and AVN were evaluated from radiographies. Hip abduction angles were evaluated on CT images. The absence of the ossific nucleus at the closed reduction time and preoperative IHDI grade were not significant risk factors for AVN (respectively OR = 2.83; 95% CI, 0.99-8.07; P = 0.052; OR = 2.5; 95% CI, 0.85-7.32; P = 0.094). For the patients older than 10 months, (1) the absence of the ossific nucleus was a significant risk factor for grade 2 or higher AVN according to the Bucholz Ogden criteria (P = 0.020) and (2) the higher preoperative IHDI grade (IHDI 3-4) was a significant risk factor for AVN (P = 0.032). AVN of the femoral head was a significant risk factor for fair or poor clinical outcome (P = 0.001). It is not reasonable to wait for radiological visibility of the ossific nucleus to prevent femoral head AVN before applying closed reduction and spica cast, irrespective of the age interval.
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Affiliation(s)
| | | | | | | | | | - Ahmet Yiğit Kaptan
- Department of Orthopaedics and Traumatology, Dr. Sami Ulus Maternity and Child Health Training and Research Hospital, Ankara/Turkey
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Garcia S, Demetri L, Starcevich A, Gatto A, Swarup I. Developmental Dysplasia of the Hip: Controversies in Management. Curr Rev Musculoskelet Med 2022; 15:272-282. [PMID: 35489017 DOI: 10.1007/s12178-022-09761-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/01/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE OF REVIEW Many aspects of developmental hip dysplasia (DDH) care and evaluation are still active areas of debate. Recent studies have provided more insight into these topics such as strategies for reducing osteonecrosis, assessing hip reduction after closed and open reduction, and the management of residual acetabular dysplasia. RECENT FINDINGS The presence of the ossific nucleus at the time of reduction does not alter the risk of osteonecrosis. The risk of osteonecrosis may be higher when hips are immobilized in excessive abduction. Limited sequence MRI may be the best choice for assessing hip reduction after closed and open reduction; however, new technologies are emerging such as 3D fluoroscopy and perfusion MRI. The treatment of residual acetabular dysplasia with bracing has been shown to be effective and the decision to perform a pelvic osteotomy is based on patient-specific factors. The spectrum of DDH treatment has evolved over the past several decades. Recent studies have provided insights into strategies for osteonecrosis prevention, hip evaluation during after reduction, and the management of residual acetabular dysplasia. However, there is ample room for additional and more rigorous studies guiding advanced imaging for assessing hip reduction such as 3D fluoroscopy and perfusion MRI, as well as the management of residual acetabular dysplasia.
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Affiliation(s)
- Steven Garcia
- Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Leah Demetri
- Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Ana Starcevich
- University of California, Davis School of Medicine, Sacramento, CA, USA
| | - Andrew Gatto
- Touro University California College of Osteopathic Medicine, Vallejo, CA, USA
| | - Ishaan Swarup
- Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, CA, USA.
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Schaeffer EK, Ponton E, Sankar WN, Kim HK, Kelley SP, Cundy PJ, Price CT, Clarke NM, Wedge JH, Mulpuri K. Interobserver and Intraobserver Reliability in the Salter Classification of Avascular Necrosis of the Femoral Head in Developmental Dysplasia of the Hip. J Pediatr Orthop 2022; 42:e59-e64. [PMID: 34889834 PMCID: PMC8663514 DOI: 10.1097/bpo.0000000000001979] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Avascular necrosis (AVN) of the femoral head is a concerning complication that can result from treatments for developmental dysplasia of the hip (DDH). AVN can lead to degenerative osteoarthritis, persistent acetabular dysplasia, reduced function, and continuing hip pain. The incidence of AVN reported in the DDH literature is widely varied (0% to 73%). This variability may arise from lack of consensus on what constitutes true AVN in this patient population, and lack of clear criteria provided in studies reporting incidence rates. METHODS A multicentre, prospective database of infants diagnosed with DDH between 2010 and 2014 from 0 to 18 months of age was analyzed for patients treated by closed reduction (CR). Twelve pediatric orthopaedic surgeons completed 2 rounds of AVN assessments. Deidentified anteroposterior radiographs at most recent follow-up were provided to surgeons along with patient age at radiographic assessment, length of follow-up, ands affected hip. Ten of 12 surgeons completed a third round of assessments where they were provided with 1 to 2 additional radiographs within the follow-up period. Radiographic criteria for total AVN described by Salter and colleagues were used. Surgeons rated the presence of AVN as "yes" or "no" and kappa values were calculated within and between rounds. RESULTS A total of 69 hips in 60 patients were assessed for AVN a median of 22 months (range: 12 to 36) post-CR. Interobserver kappa values for rounds 1, 2, and 3 were 0.52 (range: 0.11 to 0.90), 0.61 (range: 0.21 to 0.90), and 0.53 (range: 0.10 to 0.79), respectively. Intraobserver agreement for AVN diagnosis was an average of 0.72 (range: 0.31 to 0.96). CONCLUSIONS Despite using the most commonly referenced diagnostic criteria, radiographic diagnosis of AVN following CR in DDH patients demonstrated only moderate agreement across surgeons. The addition of sequential radiographs did not improve cross-observer reliability, and while substantial agreement was seen within observers, the range of intraobserver kappa values was large. LEVEL OF EVIDENCE Level I-diagnostic study.
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Affiliation(s)
- Emily K. Schaeffer
- Department of Orthopaedics, University of British Columbia
- Department of Orthopaedic Surgery, BC Children’s Hospital
| | - Ethan Ponton
- Department of Orthopaedics, University of British Columbia
- Office of Pediatric Surgical Evaluation and Innovation, BC Children’s Hospital, University of British Columbia, Vancouver, BC
| | - Wudbhav N. Sankar
- Division of Orthopaedics, The Children’s Hospital of Philadelphia, Philadelphia, PA
| | - Harry K.W. Kim
- Center for Excellence in Hip Disorders, Texas Scottish Rite Hospital for Children, Dallas, TX
- Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX
| | | | - Peter J. Cundy
- Centre for Orthopaedic and Trauma Research, The University of Adelaide
- Department of Orthopaedic Surgery, Women’s and Children’s Hospital, Adelaide, SA, Australia
| | | | - Nicholas M.P. Clarke
- Department of Pediatric Orthopaedic Surgery, Southampton Children’s Hospital
- University of Southampton, Southampton, UK
| | | | - Kishore Mulpuri
- Department of Orthopaedics, University of British Columbia
- Department of Orthopaedic Surgery, BC Children’s Hospital
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Badrinath R, Orner C, Bomar JD, Upasani VV. Narrative Review of Complications Following DDH Treatment. Indian J Orthop 2021; 55:1490-1502. [PMID: 34987725 PMCID: PMC8688677 DOI: 10.1007/s43465-021-00550-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 10/10/2021] [Indexed: 02/04/2023]
Abstract
BACKGROUND The purpose of this narrative review was to survey the literature for common complications following treatment of DDH in children less than 4 years old. METHODS The Pubmed database was queried. Search result titles were reviewed to identify papers that were pertinent to the topic. Abstracts for these papers were obtained and read, and a subset of these were selected for review of the complete manuscript. RESULTS 92 manuscripts were reviewed. Residual dysplasia, redislocation, and osteonecrosis are the primary complications of treatment in this age group. In the long term, hips without complications related to DDH treatment tend to do well, although a significant percentage of them will inevitably require joint replacement surgery. CONCLUSION Although there is excellent potential for a good outcome when DDH is diagnosed and treated under age 4 years, osteonecrosis continues to be a concern with all treatment methods. A subset of patients from this young cohort will continue to have residual dysplasia or recurrent dislocation requiring return to the operating room.
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Affiliation(s)
- Raghav Badrinath
- Orthopedics and Scoliosis, Rady Children’s Hospital San Diego, 3020 Children’s Way, MC 5062, San Diego, CA 92123 USA
| | - Caitlin Orner
- Orthopedics and Scoliosis, Rady Children’s Hospital San Diego, 3020 Children’s Way, MC 5062, San Diego, CA 92123 USA
| | - James D. Bomar
- Orthopedics and Scoliosis, Rady Children’s Hospital San Diego, 3020 Children’s Way, MC 5062, San Diego, CA 92123 USA
| | - Vidyadhar V. Upasani
- Orthopedics and Scoliosis, Rady Children’s Hospital San Diego, 3020 Children’s Way, MC 5062, San Diego, CA 92123 USA
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Young JR, Anderson MJ, O'Connor CM, Kazley JM, Mantica AL, Dutt V. Team Approach: Developmental Dysplasia of the Hip. JBJS Rev 2021; 8:e20.00030. [PMID: 32890048 DOI: 10.2106/jbjs.rvw.20.00030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Developmental dysplasia of the hip (DDH) encompasses a wide spectrum of hip disorders, including neonatal instability, acetabular dysplasia, hip subluxation, and frank dislocation of the hip. It is a common disorder, with a reported incidence of between 0.1% and >10% of live births.
Coordinated, interdisciplinary care is important to achieving successful outcomes. This starts with accurate assessment of risk factors in the prenatal period, thorough clinical examination by the primary care provider at all well-child visits, and early referral to a pediatric orthopaedic surgeon for prompt diagnosis and treatment. Early diagnosis and prompt treatment is critical for an excellent outcome. Ongoing, open communication between clinicians is essential for the effective coordination of care. Treatment options vary depending on the age of presentation. A Pavlik harness (dynamic hip abduction orthosis) is used for children up to 6 months of age. A more rigid abduction orthosis may be used if treatment with a Pavlik harness is unsuccessful, with a closed reduction and spica cast being the next step if needed for children up to 18 months of age. Finally, open reduction with possible concomitant femoral and/or pelvic osteotomies is the surgical option in an older child, when necessary. In general, the later the child is diagnosed with and treated for DDH, the greater the risk of a nonoptimal outcome. Depending on the severity of the condition, children with DDH may need to be followed closely until skeletal maturity so as not to miss the diagnosis of asymptomatic residual hip dysplasia, which can predispose patients to early hip arthritis.
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Affiliation(s)
- Joseph R Young
- Division of Orthopedic Surgery, Albany Medical Center, Albany, New York
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Meng X, Yang J, Wang Z. Magnetic resonance imaging follow-up can screen for soft tissue changes and evaluate the short-term prognosis of patients with developmental dysplasia of the hip after closed reduction. BMC Pediatr 2021; 21:115. [PMID: 33685416 PMCID: PMC7938578 DOI: 10.1186/s12887-021-02587-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/01/2021] [Indexed: 11/23/2022] Open
Abstract
Background Magnetic resonance imaging (MRI) can show the architecture of the hip joint clearly and has been increasingly used in developmental dysplasia of the hip (DDH) confirmation and follow-up. In this study, MRI was used to observe changes in the hip joints before and after closed reduction (CR) and to explore risk factors of residual acetabular dysplasia (RAD). Methods This is a prospective analysis of unilateral DDH patients with CR and spica cast in our hospital from October 2012 to July 2018. MRI and pelvic plain radiography were performed before and after CR. The labro-chondral complex (LCC) of the hip was divided into four types on MRI images. The variation in the thickening rate of the ligamentum teres, transverse ligaments, and pulvinar during MRI follow-up was analyzed, and the difference in cartilaginous acetabular head index was evaluated. The “complete relocation” rate of the femoral head was analyzed when the cast was changed for the last time, and the necrotic rate of the femoral head was evaluated after 18 months or more after CR. Lastly, the risk factors of RAD were analyzed. Results A total of 63 patients with DDH and CR were included. The LCC was everted before CR and inverted after CR, and the ligamentum teres, transverse ligaments, and pulvinar were hypertrophic before and after CR, and then gradually returned to normal shape. The cartilaginous acetabular head index gradually increased to normal values. Complete relocation was observed in 58.7% of femoral heads, while 8.6% had necrosis. The abnormalities in LCC was related to RAD (OR: 4.35, P = 0.03), and the rate of type 3 LCC in the RAD group was higher. However, the IHDI classification (P = 0.09); the “complete relocation” of femoral heads (P = 0.61); and hypertrophy of the ligamentum teres (P = 1.00), transverse ligaments (P = 1.00), and pulvinar (P = 1.00) were not related to RAD. Conclusions In this study, MRI can observe the variations of the abnormal soft tissue structures of the diseased hips after CR and spica casting, and can evaluate which hips will have RAD after CR. Therefore, we can utilize MRI in DDH patients appropriately.
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Affiliation(s)
- Xianghong Meng
- Department of Radiology, Tianjin Hospital, Jiefangnan Road, Hexi District, Tianjin, 300211, TJ, China
| | - Jianping Yang
- Department of Orthopedic Pediatrics, Tianjin Hospital, Jiefangnan Road, Hexi District, Tianjin, 300211, TJ, China
| | - Zhi Wang
- Department of Radiology, Tianjin Hospital, Jiefangnan Road, Hexi District, Tianjin, 300211, TJ, China.
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The presence of the ossific nucleus and its relation to avascular necrosis rates and the number of secondary procedures in late-presenting developmental dysplasia of the hip. J Pediatr Orthop B 2021; 30:139-145. [PMID: 32694427 DOI: 10.1097/bpb.0000000000000767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Late-presenting developmental dysplasia of the hip (DDH) has an incidence reported between 0.07 and 2:1000 live births. Avascular necrosis (AVN) of the femoral head secondary to treatment of DDH is a feared complication and may lead to adverse long-term sequelae. This study aims to investigate the relationship between the ossific nucleus (ON) presence and AVN in late-presenting DDH. This is a retrospective study of prospectively collected data over a 24-year period, at a single UK centre. Late-presenting DDH who were treated surgically with a closed or open reduction were included in the series. The presence of ON was monitored, and outcomes measured included AVN and whether delaying surgery affected the number of secondary procedures. Seventy-six patients with 79 hips (mean age at presentation 13.8 months) were included in the analysis. The mean age at presentation was 13.8 months. About 45.5% of hips with no ON present developed clinically significant AVN (Kalamchi and MacEwen grades 2-4, P = 0.12), compared to 20.6% of hips with the ON present. Delaying surgery did not affect AVN rates or the number of secondary procedures. Looking at long-term outcomes, 86.7% of hips had a Severin grade of I or II and 13.3% had a grade ≥III. Factors that affected long-term outcomes were absent ON (P = 0.04) and open reduction (P = 0.03). In the multiple logistic regression model, only open reduction could increase AVN rates (P value 0.027). The presence of ON at the time of surgery may have an impact on the rate and significance of AVN. Absence of the ON at the time of reduction negatively affects long-term outcomes in late-presenting DDH.
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Zhang G, Li M, Qu X, Cao Y, Liu X, Luo C, Zhang Y. Efficacy of closed reduction for developmental dysplasia of the hip: midterm outcomes and risk factors associated with treatment failure and avascular necrosis. J Orthop Surg Res 2020; 15:579. [PMID: 33267908 PMCID: PMC7709328 DOI: 10.1186/s13018-020-02098-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 11/19/2020] [Indexed: 02/07/2023] Open
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.
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Affiliation(s)
- Ge Zhang
- Department of Orthopaedics; Ministry of Education Key Laboratory of Child Development and Disorders; National Clinical Research Center for Child Health and Disorders (Chongqing); China International Science and Technology Cooperation base of Child development and Critical Disorders; Children's Hospital of Chongqing Medical University, 136 Zhongshan Er Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Ming Li
- Department of Orthopaedics; Ministry of Education Key Laboratory of Child Development and Disorders; National Clinical Research Center for Child Health and Disorders (Chongqing); China International Science and Technology Cooperation base of Child development and Critical Disorders; Children's Hospital of Chongqing Medical University, 136 Zhongshan Er Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Xiangyang Qu
- Department of Orthopaedics; Ministry of Education Key Laboratory of Child Development and Disorders; National Clinical Research Center for Child Health and Disorders (Chongqing); China International Science and Technology Cooperation base of Child development and Critical Disorders; Children's Hospital of Chongqing Medical University, 136 Zhongshan Er Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Yujiang Cao
- Department of Orthopaedics; Ministry of Education Key Laboratory of Child Development and Disorders; National Clinical Research Center for Child Health and Disorders (Chongqing); China International Science and Technology Cooperation base of Child development and Critical Disorders; Children's Hospital of Chongqing Medical University, 136 Zhongshan Er Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Xing Liu
- Department of Orthopaedics; Ministry of Education Key Laboratory of Child Development and Disorders; National Clinical Research Center for Child Health and Disorders (Chongqing); China International Science and Technology Cooperation base of Child development and Critical Disorders; Children's Hospital of Chongqing Medical University, 136 Zhongshan Er Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Cong Luo
- Department of Orthopaedics; Ministry of Education Key Laboratory of Child Development and Disorders; National Clinical Research Center for Child Health and Disorders (Chongqing); China International Science and Technology Cooperation base of Child development and Critical Disorders; Children's Hospital of Chongqing Medical University, 136 Zhongshan Er Road, Yuzhong District, Chongqing, 400014, People's Republic of China
| | - Yuan Zhang
- Department of Orthopaedics; Ministry of Education Key Laboratory of Child Development and Disorders; National Clinical Research Center for Child Health and Disorders (Chongqing); China International Science and Technology Cooperation base of Child development and Critical Disorders; Children's Hospital of Chongqing Medical University, 136 Zhongshan Er Road, Yuzhong District, Chongqing, 400014, People's Republic of China.
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Wu J, Yuan Z, Li J, Zhu M, Canavese F, Xun F, Li Y, Xu H. Does the size of the femoral head correlate with the incidence of avascular necrosis of the proximal femoral epiphysis in children with developmental dysplasia of the hip treated by closed reduction? J Child Orthop 2020; 14:175-183. [PMID: 32582384 PMCID: PMC7302414 DOI: 10.1302/1863-2548.14.190176] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
PURPOSE The purpose of this study was to identify if any correlation between size of the proximal femoral epiphysis and avascular necrosis (AVN) exists. METHODS We retrospectively reviewed 111 patients with developmental dysplasia of the hip treated by closed reduction (124 hips). The diameter and height of both femoral head and ossific nucleus were assessed on preoperative MRI. RESULTS The diameter and the height of the femoral head as well as of the ossific nucleus of the contralateral side were significantly greater than the dislocated side. AVN occurred in 21 (16.9%) out of 124 hips. The rate of AVN gradually decreased with age: 30.0% at six to 12 months, 18.2% at 12 to 18 months and 3.7% at 18 to 24 months. Spearman correlation analysis showed that age is negatively correlated with the incidence of AVN (r = -0.274; p = 0.002) and the diameter of the femoral head has a significantly negative association with the incidence of AVN (r = -0.287; p = 0.001). No significant association was observed between the incidence of AVN and height of the femoral head or size of the ossific nucleus. Hips with AVN were significantly smaller than hips without AVN. CONCLUSIONS The size of both the femoral head and the ossific nucleus increase with age although the dislocated femoral head is smaller compared with the contralateral side. The diameter of the femoral head and not the size of the ossific nucleus negatively correlate with the risk of AVN, with a bigger femoral head showing lower risk of AVN. LEVEL OF EVIDENCE III.
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Affiliation(s)
- JianPing Wu
- Department of Pediatric Orthopaedics, GuangZhou Women and Children’s Medical Center, GuangZhou, China
| | - Zhe Yuan
- Department of Pediatric Orthopaedics, GuangZhou Women and Children’s Medical Center, GuangZhou, China
| | - JingChun Li
- Department of Pediatric Orthopaedics, GuangZhou Women and Children’s Medical Center, GuangZhou, China
| | - MingWei Zhu
- Department of Pediatric Orthopaedics, GuangZhou Women and Children’s Medical Center, GuangZhou, China
| | - Federico Canavese
- Department of Pediatric Orthopaedics, GuangZhou Women and Children’s Medical Center, GuangZhou, China
| | - FuXing Xun
- Department of Pediatric Orthopaedics, GuangZhou Women and Children’s Medical Center, GuangZhou, China
| | - YiQiang Li
- Department of Pediatric Orthopaedics, GuangZhou Women and Children’s Medical Center, GuangZhou, China,Correspondence should be sent to HongWen Xu and YiQiang Li, Department of Pediatric Orthopaedics, GuangZhou Women and Children’s Medical Center, 9th JinSui Road, GuangZhou, 510623, China. E-mail: ,
| | - HongWen Xu
- Department of Pediatric Orthopaedics, GuangZhou Women and Children’s Medical Center, GuangZhou, China,Correspondence should be sent to HongWen Xu and YiQiang Li, Department of Pediatric Orthopaedics, GuangZhou Women and Children’s Medical Center, 9th JinSui Road, GuangZhou, 510623, China. E-mail: ,
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Barrera CA, Cohen SA, Sankar WN, Ho-Fung VM, Sze RW, Nguyen JC. Imaging of developmental dysplasia of the hip: ultrasound, radiography and magnetic resonance imaging. Pediatr Radiol 2019; 49:1652-1668. [PMID: 31686171 DOI: 10.1007/s00247-019-04504-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 06/26/2019] [Accepted: 08/07/2019] [Indexed: 01/16/2023]
Abstract
Developmental dysplasia of the hip (DDH) describes a broad spectrum of developmental abnormalities of the hip joint that are traditionally diagnosed during infancy. Because the development of the hip joint is a dynamic process, optimal treatment depends not only on the severity of the dysplasia, but also on the age of the child. Various imaging modalities are routinely used to confirm suspected diagnosis, to assess severity, and to monitor treatment response. For infants younger than 4 months, screening hip ultrasound (US) is recommended only for those with risk factors, equivocal or positive exam findings, whereas for infants older than 4-6 months, pelvis radiography is preferred. Following surgical hip reduction, magnetic resonance (MR) imaging is preferred over computed tomography (CT) because MR can not only confirm concentric hip joint reduction, but also identify the presence of soft-tissue barriers to reduction and any unexpected postoperative complications. The routine use of contrast-enhanced MR remains controversial because of the relative paucity of well-powered and validated literature. The main objectives of this article are to review the normal and abnormal developmental anatomy of the hip joint, to discuss the rationale behind the current recommendations on the most appropriate selection of imaging modalities for screening and diagnosis, and to review routine and uncommon findings that can be identified on post-reduction MR, using an evidence-based approach. A basic understanding of the physiology and the pathophysiology can help ensure the selection of optimal imaging modality and reduce equivocal diagnoses that can lead to unnecessary treatment.
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Affiliation(s)
- Christian A Barrera
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Sara A Cohen
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Wudbhav N Sankar
- Department of Orthopedic Surgery, Children's Hospital of Philadelphia, Philadelphia, PA, USA.,Perelman School of Medicine at the University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia, PA, 19104, USA
| | - Victor M Ho-Fung
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA.,Perelman School of Medicine at the University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia, PA, 19104, USA
| | - Raymond W Sze
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA.,Perelman School of Medicine at the University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia, PA, 19104, USA
| | - Jie C Nguyen
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA. .,Perelman School of Medicine at the University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia, PA, 19104, USA.
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Nelson SE, DeFrancesco CJ, Sankar WN. Operative Reduction for Developmental Dysplasia of the Hip: Epidemiology Over 16 Years. J Pediatr Orthop 2019; 39:e272-e277. [PMID: 30451811 DOI: 10.1097/bpo.0000000000001292] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The burden of surgical treatment for infantile developmental dysplasia of the hip (DDH) is unknown. We aimed to investigate the epidemiology of operative DDH reductions in the United States and identify potential at-risk populations. METHODS The Healthcare Utilization Project Kids' Inpatient Database (1997 to 2012) were analyzed. International Classification of Diseases (ICD-9) codes identified inpatient hospitalizations for DDH reductions excluding neuromuscular cases. Hospital variables and patient demographics were captured. Weighted population-level counts were calculated to allow for national estimates. RESULTS An estimated 5525 (95% confidence interval, 4907.8-6142.2) operative reductions were performed. In total, 73.3% were open with a mean age at the reduction of 2.3 years (95% confidence interval, 2.1-2.5). In total, 70.0% were female and 42.3% were white. Regional distribution varied: 36.4% of reductions occurred in the West, 22.8% in the South, 21.9% in the Midwest, and 18.9% in the Northeast. Operative reductions decreased over time; open reductions decreased by 5.6% and closed by 53.4%. Mean age at treatment increased from 1.6 to 3.7 years (P<0.001). On multivariate analysis, age (P<0.001) and geographic location (P<0.05) were associated with open reduction. Patients in the West had increased odds of being Hispanic or Asian/Pacific Islander [odds ratio (OR), 4.9, P<0.001 and OR, 2.8; P=0.008]. In the South and Midwest, the highest income quartile was protective (OR, 0.4; P=0.001 and OR, 0.5; P=0.018). CONCLUSIONS The frequency of closed reductions decreased more over time compared with open reductions. However, the mean age of children undergoing reductions increased suggesting a possible delay in diagnosis. The data suggests that there is room for improvement in screening. Targeted research in identified populations may reduce the burden of surgical disease in infantile DDH. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Susan E Nelson
- Department of Orthopaedics, University of Rochester, Rochester, NY
| | | | - Wudbhav N Sankar
- Division of Orthopaedics, Children's Hospital of Philadelphia, Philadelphia, PA
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Yang S, Zusman N, Lieberman E, Goldstein RY. Developmental Dysplasia of the Hip. Pediatrics 2019; 143:peds.2018-1147. [PMID: 30587534 DOI: 10.1542/peds.2018-1147] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/07/2018] [Indexed: 11/24/2022] Open
Abstract
Pediatricians are often the first to identify developmental dysplasia of the hip (DDH) and direct subsequent appropriate treatment. The general treatment principle of DDH is to obtain and maintain a concentric reduction of the femoral head in the acetabulum. Achieving this goal can range from less-invasive bracing treatments to more-invasive surgical treatment depending on the age and complexity of the dysplasia. In this review, we summarize the current trends and treatment principles in the diagnosis and treatment of DDH.
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Affiliation(s)
- Scott Yang
- Department of Orthopedics and Rehabilitation, Doernbecher Children's Hospital and Oregon Health and Science University, Portland, Oregon; and
| | - Natalie Zusman
- Department of Orthopedics and Rehabilitation, Doernbecher Children's Hospital and Oregon Health and Science University, Portland, Oregon; and
| | - Elizabeth Lieberman
- Department of Orthopedics and Rehabilitation, Doernbecher Children's Hospital and Oregon Health and Science University, Portland, Oregon; and
| | - Rachel Y Goldstein
- Children's Orthopaedic Center, Children's Hospital Los Angeles, Los Angeles, California
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Park KB, Vaidya VN, Shin H, Kwak YH. Prereduction traction for the prevention of avascular necrosis before closed reduction for developmental dysplasia of the hip: a meta-analysis. Ther Clin Risk Manag 2018; 14:1253-1260. [PMID: 30087565 PMCID: PMC6063247 DOI: 10.2147/tcrm.s166531] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND AND PURPOSE Avascular necrosis (AVN) is one of the common complications after closed reduction and hip spica cast for developmental dysplasia of the hip (DDH). Prereduction traction has been used to reduce a dislocated hip or decrease the risk of AVN, but there are conflicting results in prevention effects on AVN. The purpose of this study was to systematically review the current literature and evaluate the effect of prereduction traction in preventing AVN in children with DDH treated by closed reduction through a meta-analysis. MATERIALS AND METHODS A systematic review of the literature was performed using PubMed and EMBASE with variations of three major terms: 1) hip dislocation; 2) closed reduction; and 3) avascular necrosis. Seven studies that could compare the incidence of AVN between the traction and no-traction group were included. Methodological quality was assessed, a heterogeneity test was done (p=0.008), and the pooled risk ratios were estimated. RESULTS The association between traction and AVN was assessed, using data on 683 hips treated by closed reduction. The incidence of AVN in the traction and no-traction groups ranged from 5% to 47.7% and from 0% to 72.7%, respectively. A meta-analysis with a random effects model indicated no significant difference in the incidence of AVN between traction and no-traction groups (p=0.536). CONCLUSION There was insufficient evidence to decide the efficacy of prereduction traction before closed reduction in reducing the risk of AVN in patients with DDH in this meta-analysis. To recommend prereduction traction for the prevention of AVN, long-term follow-up studies considering age, severity of dislocation, and appropriate traction method are needed.
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Affiliation(s)
- Kun-Bo Park
- Division of Orthopaedic Surgery, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea
| | | | - Hyejung Shin
- Biostatistics Collaboration Unit, Medical Research Center, Yonsei University College of Medicine, Seoul, Korea
| | - Yoon Hae Kwak
- Department of Orthopaedic Surgery, Hallym Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea,
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Abstract
BACKGROUND Developmental dysplasia of the hip (DDH), which encompasses a wide spectrum of disease from mild dysplasia to frank dislocation, is one of the most common developmental deformities of the lower extremities and one of the leading causes of future osteoarthritis and hip arthroplasty. Legg-Calvé-Perthes disease (LCPD) results from a vascular insult to the growing femoral epiphysis, which in turn can create permanent morphologic changes to the hip joint. Slipped capital femoral epiphysis (SCFE) occurs when the proximal femoral physis fails allowing the epiphysis to displace in relation to the metaphysis. Infections about the hip also create significant morbidity in the pediatric hip. METHODS We searched the PubMed database for all studies related to DDH, LCPD, SCFE, and pediatric hip infections that were published between July 1, 2014 and August 31, 2017. The search was limited to English articles and yielded 839 papers. This project was initiated by the Pediatric Orthopaedic Society of North America Publications Committee and was reviewed and approved by the Pediatric Orthopaedic Society of North America Presidential Line. RESULTS A total of 40 papers were selected for review based upon new and significant findings. Select historical manuscripts are also included to provide sufficient background information. CONCLUSIONS DDH, LCPD, SCFE, and infections about the hip continue to be important topics in pediatric orthopaedics and areas of vital research. This manuscript reviews the most important recent literature on the diagnosis and treatment of these pediatric hip conditions. LEVEL OF EVIDENCE Level V.
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Affiliation(s)
- Matthew R Schmitz
- Department of Orthopaedics, San Antonio Military Medical Center, San Antonio, TX
| | - Todd J Blumberg
- Department of Orthopaedics and Sports Medicine, Seattle Children's Hospital, Seattle, WA
| | - Susan E Nelson
- Department of Orthopaedics and Rehabilitation, University of Rochester and the Golisano Children's Hospital at Strong, Rochester, NY
| | - Julieanne P Sees
- Department of Orthopaedic Surgery, Nemours Alfred I Dupont Hospital for Children, Wilmington, DE
| | - Wudbhav N Sankar
- Division of Orthopaedic Surgery, Children's Hospital of Philadelphia, Philadelphia, PA
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Çiçekli Ö, Doğan M. Evaluation of surgical outcome in advanced age patients with developmental hip dysplasia. Int J Surg 2018; 52:44-49. [PMID: 29455046 DOI: 10.1016/j.ijsu.2018.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 02/04/2018] [Accepted: 02/06/2018] [Indexed: 10/18/2022]
Abstract
BACKGROUND This study aimed at determining the efficacy of the surgical treatment conducted on children with delayed presentation developmental dysplasia of the hip (DDH). The objective was to provide a good comparison of functional and radiographic outcomes and to determine various surgical treatment options. METHOD In this study, we evaluated the results of 38 hips of 27 patients aged 4 years onset which had been operated due to DDH. Radiographic outcomes were evaluated by using acetabular index, CE angle, Tonnis and the Severin classification system. Clinical evaluation was made by using IOWA hip scores. Degenerative changes were evaluated according to Boyer and avascular necrosis according to Kalamchi-MacEwen criteria. RESULTS The mean age of the patients at the operation time was 10 years 3 months (range: 4 years 3 months-30 years). While the mean acetabular index was 37.97 preoperatively, in the last follow-up it was 19.92. Thirty-six hips (94%) had an excellent and good outcomes, and two hips (%6) had a fair outcome with respect to the Severin criteria. The mean hip score with respect to IOWA was 93.736 (range: 75-98) and the rate of excellent and good outcomes was 98%. CONCLUSION For the treatment of patients with DDH of late onset, a one-staged operative procedure is recommended. This method is applied successfully and enables us to achieve good clinical and radiographic results.
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Affiliation(s)
- Özgür Çiçekli
- Sakarya Training and Research Hospital, Department of Orthopaedic Surgery, Sakarya, Turkey.
| | - Metin Doğan
- Yıldırım Beyazıt University, Faculty of Medicine, Department of Orthopaedic Surgery, Ankara, Turkey
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Swarup I, Penny CL, Dodwell ER. Developmental dysplasia of the hip: an update on diagnosis and management from birth to 6 months. Curr Opin Pediatr 2018; 30:84-92. [PMID: 29194074 DOI: 10.1097/mop.0000000000000574] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
PURPOSE OF REVIEW Our understanding of the epidemiology, diagnosis, and management of developmental dysplasia of the hip (DDH) is evolving. This review focuses on the most up-to-date literature on DDH in patients from birth to six months of age. RECENT FINDINGS Well known risk factors for DDH include family history, female sex, and breech positioning. Recent evidence suggests higher birth weight is a risk, whereas prematurity may be protective. Screening includes physical examination of all infant hips and imaging when abnormal findings or risk factors are present. Treatment in the first six months consists of a harness, with 70-95% success. Failure risk factors include femoral nerve palsy, static bracing, irreducible hips, initiation after seven weeks of age, right hip dislocation, Graf-IV hips, and male sex. Rigid bracing may be trialed if reduction with a harness fails and closed reduction is indicated after failed bracing. If the hip is still irreducible, nonconcentric, or unstable, open reduction may be required following closed reduction. Evidence does not support delaying hip reduction until the ossific nucleus is present. SUMMARY DDH affects 1-7% of infants. All infants should be examined and selective screening with imaging should be performed for abnormal physical exams or risk factors. Early treatment is associated with optimal outcomes.
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Affiliation(s)
- Ishaan Swarup
- Hospital for Special Surgery, New York, New York, USA
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