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https://www.readbyqxmd.com/read/28688198/study-of-the-interactions-between-proximal-femur-3d-bone-shape-cartilage-health-and-biomechanics-in-patients-with-hip-osteoarthritis
#1
Valentina Pedoia, Michael A Samaan, Gaurav Inamdar, Matthew C Gallo, Richard B Souza, Sharmila Majumdar
In this study quantitative MRI and gait analysis were used to investigate the relationships between proximal femur 3D bone shape, cartilage morphology, cartilage biochemical composition, and joint biomechanics in subject with hip Osteoarthritis (OA). Eighty subjects underwent unilateral hip MR-imaging: T1ρ and T2 relaxation times were extracted through voxel based relaxometry and bone shape was assessed with 3D MRI-based statistical shape modeling. In addition, 3D gait analysis was performed in seventy-six of the studied subjects...
July 8, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28455719/valgus-slipped-capital-femoral-epiphysis-with-contralateral-pre-slip
#2
Dana E Amiraian, Zahir Sarwar, William R Bireley, Elizabeth Moran
Slipped capital femoral epiphysis (SCFE) is a common hip disorder in older children and adolescents, classically with medial and posterior slippage of the proximal femoral epiphysis. However, valgus SCFE is a very rare entity, where the proximal femoral epiphysis slips laterally and posteriorly. To our knowledge, valgus SCFE with magnetic resonance imaging (MRI) features of contralateral pre-slip has not yet been reported. We present a case of a 9 year old girl with symptomatic valgus SCFE on the left and asymptomatic contralateral pre-slip on the right with concurrent radiographic, sonographic, and MRI findings...
September 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28127618/the-effect-of-valgus-and-varus-femoral-osteotomies-on-measures-of-anteversion-in-the-dog
#3
Rachel W Adams, Brad Gilleland, Farrah Monibi, Samuel P Franklin
OBJECTIVE: To determine whether femoral osteotomies that change frontal plane alignment without affecting torsion influence anteversion and inclination. METHODS: Femurs without deformity were scanned to create three-dimensional reconstructions. The femoral head-neck axis was identified by placement of a virtual intramedullary pin. A proximal osteotomy was simulated to create three conditions while keeping torsion constant: Normal, Coxa Valga (neck-shaft angle increased by 12°), and Coxa Vara (neck-shaft angle decreased by 12°)...
January 27, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/27979613/mucopolysaccharidosis-iva-and-glycosaminoglycans
#4
REVIEW
Shaukat Khan, Carlos J Alméciga-Díaz, Kazuki Sawamoto, William G Mackenzie, Mary C Theroux, Christian Pizarro, Robert W Mason, Tadao Orii, Shunji Tomatsu
Mucopolysaccharidosis IVA (MPS IVA; Morquio A: OMIM 253000) is a lysosomal storage disease with an autosomal recessive trait caused by the deficiency of N-acetylgalactosamine-6-sulfate sulfatase. Deficiency of this enzyme leads to accumulation of specific glycosaminoglycans (GAGs): chondroitin-6-sulfate (C6S) and keratan sulfate (KS). C6S and KS are mainly produced in the cartilage. Therefore, the undegraded substrates are stored primarily in cartilage and in its extracellular matrix (ECM), leading to a direct impact on cartilage and bone development, and successive systemic skeletal dysplasia...
January 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/27957636/bony-morphology-of-the-hip-in-professional-ballet-dancers-compared-to-athletes
#5
Susan Mayes, April-Rose Ferris, Peter Smith, Andrew Garnham, Jill Cook
OBJECTIVES: To compare hip bony morphology between ballet dancers and a sporting control group and to determine the relationship with hip pain. METHODS: Thirty-three professional ballet dancers and 33 age- and sex-matched athletes completed questionnaires, including the Copenhagen Hip and Groin Outcome Score (HAGOS), and underwent clinical testing and 3.0-T magnetic resonance imaging to measure acetabular coverage with lateral centre edge angles, femoral head-neck junction concavity with alpha angles at anterior and superior positions, femoral neck-shaft angles, and acetabular version angles...
December 12, 2016: European Radiology
https://www.readbyqxmd.com/read/27836678/finite-element-analysis-of-mechanical-behavior-of-human-dysplastic-hip-joints-a-systematic-review
#6
REVIEW
B Vafaeian, D Zonoobi, M Mabee, A R Hareendranathan, M El-Rich, S Adeeb, J L Jaremko
Developmental dysplasia of the hip (DDH) is a common condition predisposing to osteoarthritis (OA). Especially since DDH is best identified and treated in infancy before bones ossify, there is surprisingly a near-complete absence of literature examining mechanical behavior of infant dysplastic hips. We sought to identify current practice in finite element modeling (FEM) of DDH, to inform future modeling of infant dysplastic hips. We performed multi-database systematic review using PRISMA criteria. Abstracts (n = 126) fulfilling inclusion criteria were screened for methodological quality, and results were analyzed and summarized for eligible articles (n = 12)...
November 9, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27293934/femoral-varus-osteotomy-for-hip-instability-after-traumatic-fracture-dislocations-of-the-hip-associated-with-femoral-head-fractures-a-report-of-two-cases
#7
Shuichi Miyamoto, Junichi Nakamura, Satoshi Iida, Chiho Suzuki, Seiji Ohtori, Sumihisa Orita, Kazuhisa Takahashi
Fracture of the femoral head and the acetabulum with traumatic dislocation of the hip is a severe injury representing various types and unfavorable outcome. We showed a 45-year-old man with Pipkin type-IV fracture and coxa valga. An immediate closed reduction was achieved followed by open reduction and internal fixation via a posterior approach 6 days later. However, dislocation occurred three times without traumatic events after three weeks. CT demonstrated no displacement of posterior fragments or implant failure...
2016: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/26935461/progression-of-hip-dysplasia-in-mucopolysaccharidosis-type-i-hurler-after-successful-hematopoietic-stem-cell-transplantation
#8
Eveline J Langereis, Matthijs M den Os, Catherine Breen, Simon A Jones, Olga C Knaven, Jean Mercer, Weston P Miller, Paula M Kelly, Jim Kennedy, Tyler G Ketterl, Anne O'Meara, Paul J Orchard, Troy C Lund, Rick R van Rijn, Ralph J Sakkers, Klane K White, Frits A Wijburg
BACKGROUND: Dysostosis multiplex contributes substantially to morbidity in patients with Hurler syndrome (mucopolysaccharidosis type I Hurler phenotype [MPS I-H]), even after successful hematopoietic stem cell transplantation (HSCT). One of the hallmarks of dysostosis multiplex in MPS I-H is hip dysplasia, which often requires surgical intervention. We sought to describe in detail the course of hip dysplasia in this group of patients, as assessed by radiographic analysis, and to identify potential outcome predictors...
March 2, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/26797005/lower-limb-length-and-offset-in-total-hip-arthroplasty
#9
REVIEW
X Flecher, M Ollivier, J N Argenson
Restoration of normal hip biomechanics is a key goal of total hip arthroplasty (THA) and favorably affects functional recovery. Furthermore, a major concern for both the surgeon and the patient is preservation or restoration of limb length equality, which must be achieved without compromising the stability of the prosthesis. Here, definitions are given for anatomic and functional limb length discrepancies and for femoral and hip offset, determined taking anteversion into account. Data on the influence of operated-limb length and offset on patient satisfaction, hip function, and prosthesis survival after THA are reviewed...
February 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/26777718/malunion-in-displaced-intracapsular-fracture-of-femoral-neck-a-rare-case
#10
Nikhil Verma, M P Singh, Rehan Ul Haq, Aditya N Aggarwal, Anuj Jain
Intracapsular fracture of femoral neck is treated by anatomical reduction (preferably closed) and cannulated cancellous lag screw fixation. Malunion of these fractures have been described in the coronal plane (coxa valga or coxa vara). We reported a case of young adult patient with displaced intracapsular fracture of femoral neck that had malunited in sagittal plane with callus formation with excellent functional outcome. The radiographs revealed intracapsular fracture of femoral neck right side (Garden type 4 and Pauwel type 3)...
2015: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/26695396/the-neck-shaft-angle-ct-reference-values-of-800-adult-hips
#11
Christoph Kolja Boese, Janine Jostmeier, Johannes Oppermann, Jens Dargel, De-Hua Chang, Peer Eysel, Philipp Lechler
OBJECTIVE: A precise understanding of the radiological anatomy and biomechanics as well as reliable reference values of the hip are essential. The primary goal of this study was to provide reference values of the neck-shaft angle (NSA) for adult patients based on the analysis of rotation corrected computed tomography (CT) scans of 800 hips. The secondary aim was to compare these measurements with simulated anteroposterior roentgenograms of the pelvis. MATERIALS AND METHODS: Pelvic CT scans of 400 patients (54...
April 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/26587798/ischiofemoral-impingement-in-children-imaging-with-clinical-correlation
#12
Gregor Stenhouse, Scott Kaiser, Simon P Kelley, Jennifer Stimec
OBJECTIVE: The purpose of this study is to correlate the MRI finding of quadratus femoris edema in children with established measures of ischiofemoral impingement in adults and to determine their clinical significance. MATERIALS AND METHODS: A case-control retrospective review was performed of MR images of 12 hips of nine children (mean age, 10 years) that showed abnormal signal intensity in the quadratus femoris muscle. The findings were compared with those for 13 hips in 13 control subjects (mean age, 9...
February 2016: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/26566416/distinctive-skeletal-abnormalities-with-no-microdeletions-or-microduplications-on-array-cgh-in-a-boy-with-mohr-syndrome-oro-facial-digital-type-ii
#13
Ali Al Kaissi, Renata Pospischill, Franz Grill, Rudolf Ganger
We describe a constellation of distinctive skeletal abnormalities in an 8-year-old boy who presented with the full clinical criteria of oro-facial-digital (OFD) type II (Mohr syndrome): bony changes of obtuse mandibular angle, bimanual hexadactyly and unilateral synostosis of the metacarpo-phalanges of 3-4, bilateral coxa valga associated with moderate hip subluxation, over-tubulation of the long bones, vertical talus of the left foot and talipes equinovarus of the right foot respectively. Interestingly, we encountered variable minor malformations in his parents, confirming the autosomal recessive pattern of inheritance...
December 2015: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/26290346/determinants-of-hip-displacement-in-children-with-cerebral-palsy
#14
Chia Hsieh Chang, Ying Chih Wang, Pei Chi Ho, Ai Wen Hwang, Hsuan Kai Kao, Wei Chun Lee, Wen E Yang, Ken N Kuo
BACKGROUND: Coxa valga and femoral anteversion often are seen in patients with spastic hip displacement and osteotomy is recommended. However, the relationship between femoral deformities and hip displacement has not been clearly defined and other factors, such as joint motion and posture, should be considered before recommending treatment. QUESTIONS: For children with cerebral palsy with Gross Motor Function Classification System Level IV or V, we questioned (1) whether hip abduction range correlates with hip displacement, (2) what the relationships are between proximal femoral deformities and hip displacement, and (3) whether the patient with a windblown posture has greater degrees of femoral anteversion? METHODS: We retrospectively studied 31 consecutive children with cerebral palsy with Level IV or V gross motor function who underwent three-dimensional CT for preoperative assessment of hip displacement between January 2010 and December 2013...
November 2015: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/26239279/progressive-hip-joint-subluxation-in-saul-wilson-syndrome
#15
Yasutsugu Chinen, Takuya Kaneshi, Takeshi Kamiya, Kenichiro Hata, Gen Nishimura, Tadashi Kaname
Saul-Wilson syndrome (SWS) is a rare congenital skeletal syndrome characterized by postnatal onset of short stature, relative microcephaly, frontal bossing, prominent eyes with shallow orbits, midface hypoplasia, cataract, and generalized skeletal changes, including spondylar dysplasia, overtubulation of the long bones with metaphyseal flaring and megaepiphyses, coxa valga, elbow deformity, and brachydactyly. We describe a boy with the overall clinical and radiological features fitting the characteristics of SWS, although cataract, elbow deformity, and overt brachydactyly were not seen...
November 2015: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/26229926/hip-salvage-surgery-in-cerebral-palsy-cases-a-systematic-review
#16
REVIEW
Rafael Carboni de Souza, Marcelo Valentim Mansano, Miguel Bovo, Helder Henzo Yamada, Daniela Regina Rancan, Patricia Maria de Moraes Barros Fucs, Celso Svartman, Rodrigo Montezuma César de Assumpção
Imbalance and muscle spasticity, in association with coxa valga and persistent femoral anteversion, compromises hip development in cases of cerebral palsy and may result in chronic pain and even dislocation. Some of these hips undergo salvage surgery because of the severe impact of their abnormalities in these patients' quality of life. We conducted a systematic review of the literature to compare the results from the main hip salvage techniques applied to these individuals. The literature search focused on studies that evaluated results from hip salvage surgery in cases of cerebral palsy, published from 1970 to 2011, which are present in the Embase, Medline, PubMed, Cochrane Library and SciELO databases...
May 2015: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/26141311/the-underused-hip-in-ipsilaterally-orthotics-dependent-children
#17
Asser Sallam, Christian M Ziegler, Volkmar Jansson, Bernhard Heimkes
BACKGROUND: The aim of this investigation is the development of primarily healthy hips in children who have required orthoses/protheses over the long term due to ipsilateral distally located deformities of the leg. These children show ipsilateral in-toeing gait and Duchenne's limping followed by a coxa valga antetorta and facultative hip decentration. A practical question is whether these hips are in danger of decompensation. An additional theoretical question is how the external shape and internal architecture changes if a primarily healthy hip is underused...
August 2015: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/25888017/developmental-pattern-of-the-hip-in-patients-with-hereditary-multiple-exostoses
#18
Ya-Zhou Wang, Kwang-Won Park, Chang-Seon Oh, Yeong-Seub Ahn, Qing-Lin Kang, Sung-Taek Jung, Hae-Ryong Song
BACKGROUND: Coxa valga is a common clinical feature of hereditary multiple exostoses (HME). The current study aimed to determine the unique developmental pattern of the hip in patients with HME and evaluate the factors that influence its progression. METHODS: Thirty patients (57 hips) with HME were divided into two groups according to the Hilgenreiner epiphyseal angle (HEA). Twenty-two patients (44 hips) including 13 men and 9 women were assigned to group 1 (HEA <25°), and 8 patients (13 hips) including 3 men and 5 women were assigned to group 2 (HEA ≥25°)...
March 15, 2015: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/25887815/guided-growth-of-the-proximal-femur-for-hip-displacement-in-children-with-cerebral-palsy
#19
Wei-Chun Lee, Hsuan-Kai Kao, Wen-E Yang, Pei-Chi Ho, Chia-Hsieh Chang
BACKGROUND: Guided growth by 1 eccentric transphyseal screw has been used to correct lower limb deformities. Pilot animal studies showed encouraging results in producing varus deformity in the proximal femur. The purpose of this study was to report the preliminary results of guided growth surgery to treat spastic hip displacement. METHODS: This case series study included consecutive patients who received soft-tissue release and guided growth at the proximal femur from January 2004 to May 2012 with minimal 2-year follow-up...
July 2016: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/25826634/10-year-experience-with-short-stem-total-hip-arthroplasty
#20
REVIEW
Gabriela von Lewinski, Thilo Floerkemeier
Since 1998, short stem total hip arthroplasty (THA) has been performed at the authors' institution. Currently, 30% of THAs are performed with short stems. This article reports on complications that required revision of a short stem THA. Between September 2005 and February 2012, a total of 1953 Metha short stem THAs were performed; of these, 38 required revision due to mechanical complications. In 12 cases, the modular titanium neck adapter failed. In 19 cases, aseptic implant loosening occurred; of these, 11 cases were due to major stem subsidence...
March 2015: Orthopedics
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