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Correction Of Deformity

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https://www.readbyqxmd.com/read/30109996/an-unsupervised-convolutional-neural-network-based-algorithm-for-deformable-image-registration
#1
Vasant P Kearney, Samuel Haaf, Atchar Sudhyadhom, Gilmer Valdes, Timothy D Solberg
The purpose of the work is to develop a deep unsupervised learning strategy for cone-beam CT (CBCT) to CT deformable image registration (DIR). This technique uses a deep convolutional inverse graphics network (DCIGN) based DIR algorithm implemented on 2 Nvidia 1080 Ti graphics processing units. The model is comprised of an encoding and decoding stage. The fully-convolutional encoding stage learns hierarchical features and simultaneously forms an information bottleneck, while the decoding stage restores the original dimensionality of the input image...
August 15, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/30109795/outcomes-of-french-s-corrective-osteotomy-of-the-humerus-for-cubitus-varus-deformity-in-children
#2
Hagay Orbach, Nimrod Rozen, Guy Rubin, Eytan Dujovny, Noam Bor
BACKGROUND: Supracondylar humerus fractures are the most common elbow fractures in the pediatric population. OBJECTIVES: To evaluate the outcomes of French's corrective osteotomy for correction of post-traumatic cubitus varus deformity in children. METHODS: We conducted a retrospective review of medical charts of all patients who had undergone French's corrective osteotomy in our institution from 1998 to 2012. We recorded range of motion, cosmetic deformity, carrying angle, lateral cortex prominence index, hyperextension, and lateral cortex step before and after the surgery...
July 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/30107387/superior-based-transposition-flap-a-novel-technique-in-rhinoplasty
#3
Süleyman Tas
Background: The cephalic trimming of the lower lateral cartilage (LLC) is an attempt to reduce tip bulbosity; unfortunately, it has the potential to cause a pinched nose deformity and valve collapse. Objectives: To use the superior-based transposition (ST) flap to reshape, relocalize, and reinforce the LLC as a support material for both internal and external valves with aesthetic corrections, leaving the scroll area untouched. Methods: A total of 367 patients (female, 215; male, 152) were operated with the presented technique...
August 10, 2018: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/30106763/femoral-derotation-osteotomy-in-adults-for-version-abnormalities
#4
Robert L Buly, Branden R Sosa, Lazaros A Poultsides, Elaine Caldwell, S Robert Rozbruch
BACKGROUND: Version abnormalities of the femur can cause pain and hip joint damage due to impingement or instability. A retrospective clinical review was conducted on patients undergoing a subtrochanteric derotation osteotomy for either excessive anteversion or retroversion of the femur. METHODS: A total of 55 derotation osteotomies were performed in 43 patients: 36 females and 7 males. The average age was 29 years (range, 14 to 59 years). The osteotomies were performed closed with an intramedullary saw...
August 13, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/30105592/sprengel-s-deformity-of-the-shoulder-joint-treated-by-woodward-operation
#5
Mohamed Mansour Elzohairy, Adel Mohamed Salama
BACKGROUND: Sprengel's shoulder deformity is a rare condition that happens because of the abnormal termination of the caudal migration of the scapula during the embryonic period. METHODS: This retrospective clinical study included 10 consecutive children who underwent a Woodward operation to correct the Sprengel's shoulder deformity. RESULTS: The average preoperative Cavendish grade for cosmetic evaluation was 3.5 (range 3-4), which decreased to 1...
August 13, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/30104937/opening-wedge-osteotomy-for-the-correction-of-adolescent-tibia-vara
#6
Branum Griswold, Shawn Gilbert, Joseph Khoury
Background: Tibia vara, or Blount's disease, is a pathologic angular deformity of upper tibial physis causing a bow leg deformity. Adolescent Blount's disease may be unilateral or bilateral and is diagnosed during or just before the adolescent growth spurt. In addition to predisposing genetic factors, biomechanical overload of the proximal tibial physis causes asymmetric growth leading to a varus deformity.Surgical intervention is usually required for adolescent Blount's disease. Hemiepiphysiodesis has had some success in arresting or correcting the deformity...
2018: Iowa Orthopaedic Journal
https://www.readbyqxmd.com/read/30103588/-comparison-of-clinical-efficacy-of-complete-and-incomplete-radical-debridement-for-spinal-tuberculosis-a-meta-analysis
#7
Jia-Long Nong, Zhen-Xue Long, Chun-Xian Lu
OBJECTIVE: To compare clinical efficacy of complete and incomplete radical debridement for spinal tuberculosis by Meta-analysis. METHODS: The literatures of RCT or non-RCT with complete and incomplete radical debridement for spinal tuberculosis from Medline, EMBASE, Cochrane Library, Web of Science, CBM, CNKI and Wanfang were searched from the time of creating database to July, 2017. Two independent reviewers identified eligible studies, extracted data and evaluated risk of bias of included studies...
July 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/30098044/abdominal-dce-mri-reconstruction-with-deformable-motion-correction-for-liver-perfusion-quantification
#8
Adam Johansson, James M Balter, Yue Cao
PURPOSE: Abdominal dynamic contrast-enhanced (DCE) MRI suffers from motion-induced artifacts that can blur images and distort contrast-agent uptake curves. For liver perfusion analysis, image reconstruction with rigid-body motion correction (RMC) can restore distorted portal-venous input functions (PVIF) to higher peak amplitudes. However, RMC cannot correct for liver deformation during breathing. We present a reconstruction algorithm with deformable motion correction (DMC) that enables correction of breathing-induced deformation in the whole abdomen...
August 11, 2018: Medical Physics
https://www.readbyqxmd.com/read/30097671/the-application-of-the-acellular-dermal-matrix-in-the-correction-of-the-tear-trough-deformity
#9
Di Yue, Xiaowei Wu, Haichen Song, Zhichun Zhou, Man Ye, Mengshan Zhu
OBJECTIVE: The acellular dermal matrix (ADM) used in correcting the tear trough deformity has been reported, but there were only a few cases. The long-term effectiveness of ADM was not clear. We aim to discuss the technique and the effect of using ADM to correct the tear trough deformity through more cases. METHODS: A retrospective study was conducted from January 2012 to January 2017. Twenty-six patients who showed obvious tear trough deformity with moderate or severe orbital fat bulging and excess of lower eyelid skin were treated with ADM to improve the appearance of the midface...
August 10, 2018: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/30097084/medial-approach-to-the-subtalar-joint
#10
REVIEW
James Widnall, Lyndon Mason, Andrew Molloy
Surgical access to the subtalar joint is required in a plethora of pathologic conditions of the hindfoot. The conventional lateral approach can give excellent access to subtalar joint; however, in hindfoot valgus deformities, there can be unacceptable risks of wound problems and incomplete deformity corrections. The medial approach offers good access to the subtalar joint with an increasing evidence base for its use, especially with double fusions in pes planus deformities. The authors review the current evidence in the use of the medial approach for the subtalar joint...
September 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/30096125/identifying-thoracic-compensation-and-predicting-reciprocal-thoracic-kyphosis-and-pjk-in-adult-spinal-deformity-surgery
#11
Themistocles S Protopsaltis, Bassel G Diebo, Renaud Lafage, Jensen K Henry, Justin S Smith, Justin K Scheer, Daniel M Sciubba, Peter G Passias, Han Jo Kim, D Kojo Hamilton, Alexandra Soroceanu, Eric O Klineberg, Christopher P Ames, Christopher I Shaffrey, Shay Bess, Robert A Hart, Frank J Schwab, Virginie Lafage
STUDY DESIGN: Retrospective analysis. OBJECTIVE: To define thoracic compensation and investigate its association with postoperative reciprocal thoracic kyphosis and proximal junctional kyphosis (PJK) SUMMARY OF BACKGROUND DATA.: Adult spinal deformity (ASD) patients recruit compensatory mechanisms like pelvic retroversion and knee flexion. However, thoracic hypokyphosis is a less recognized compensatory mechanism. METHODS: Patients enrolled in a multicenter ASD registry undergoing fusions to the pelvis with UIV between T9-L1 were included...
August 9, 2018: Spine
https://www.readbyqxmd.com/read/30095853/maxillary-distraction-osteogenesis-versus-orthognathic-surgery-for-cleft-lip-and-palate-patients
#12
REVIEW
Dimitrios Kloukos, Piotr Fudalej, Patrick Sequeira-Byron, Christos Katsaros
BACKGROUND: Cleft lip and palate is one of the most common birth defects and can cause difficulties with feeding, speech and hearing, as well as psychosocial problems. Treatment of orofacial clefts is prolonged; it typically commences after birth and lasts until the child reaches adulthood or even into adulthood. Residual deformities, functional disturbances, or both, are frequently seen in adults with a repaired cleft. Conventional orthognathic surgery, such as Le Fort I osteotomy, is often performed for the correction of maxillary hypoplasia...
August 10, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/30095792/quantitative-characteristics-of-consecutive-lengthening-episodes-in-early-onset-scoliosis-eos-patients-with-dual-growth-rods
#13
Aakash Agarwal, Ankur Goswami, Govindaraja Perumal Vijayaraghavan, Abhishek Srivastava, Pankaj Kandwal, Upendra Bidre Nagaraja, Vijay K Goel, Anand K Agarwal, Arvind Jayaswal
STUDY DESIGN: A prospective single-center study OBJECTIVE.: To record the characteristic forces and lengths observed during distraction episodes in early onset scoliosis (EOS), and analyze their interdependencies on the key variability among the patients. SUMMARY OF BACKGROUND DATA: The goal of the growing-rod technique is to achieve deformity correction alongside maintaining growth of the spine. The deformity correction is achieved during the initial surgery but follow up distraction episodes are necessary to maintain the growth...
August 7, 2018: Spine
https://www.readbyqxmd.com/read/30095383/the-impact-of-age-on-surgical-goals-for-spinopelvic-alignment-in-minimally-invasive-surgery-for-adult-spinal-deformity
#14
Paul Park, Kai-Ming Fu, Praveen V Mummaneni, Juan S Uribe, Michael Y Wang, Stacie Tran, Adam S Kanter, Pierce D Nunley, David O Okonkwo, Christopher I Shaffrey, Gregory M Mundis, Dean Chou, Robert Eastlack, Neel Anand, Khoi D Than, Joseph M Zavatsky, Richard G Fessler
OBJECTIVE Achieving appropriate spinopelvic alignment in deformity surgery has been correlated with improvement in pain and disability. Minimally invasive surgery (MIS) techniques have been used to treat adult spinal deformity (ASD); however, there is concern for inadequate sagittal plane correction. Because age can influence the degree of sagittal correction required, the purpose of this study was to analyze whether obtaining optimal spinopelvic alignment is required in the elderly to obtain clinical improvement...
August 10, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/30095014/early-correction-of-distal-radius-partial-articular-malunion-leads-to-good-long-term-functional-recovery-at-mean-follow-up-of-4-years
#15
T David Luo, Fiesky A Nunez, Elizabeth A Newman, Fiesky A Nunez
BACKGROUND: Distal radius articular step-off or deformity may cause posttraumatic arthritis and poor functional outcome. The purpose of this study was to evaluate pain and functional outcomes in patients with malunited partial articular distal radius fractures who underwent corrective osteotomy. We hypothesized that anatomic restoration of distal radius articular surface after a malunited partial articular distal radius fracture results in improvement in pain and functional measures and delays the development of posttraumatic arthritis...
August 10, 2018: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/30094566/association-with-right-atrial-strain-with-right-atrial-pressure-an-invasive-validation-study
#16
Leah M Wright, Nathan Dwyer, Sudhir Wahi, Thomas H Marwick
Echocardiographic assessment of right atrial pressure (RAP) from inferior vena cava (RAPIVC ) dimension may underestimate catheter-derived (RAPC ). As right atrial (RA) deformation, measured by speckle tracking, is preload-dependent, we hypothesized that RA strain may improve estimation of RAPC . Right atrial strain components [RA reservoir function (ƐR), peak RA contraction (ƐCT) and RA conduit function (ƐCD)] were measured in 125 of 175 patients who had echocardiography and invasive measures of RAP (median difference 1 day)...
August 9, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/30093957/a-novel-probe-for-measuring-tissue-bioelectrical-impedance-to-enhance-pedicle-screw-placement-in-spinal-surgery
#17
Zheng Li, Chong Chen, Youxi Lin, Xingye Li, Haining Tan, Matthew Tv Chan, William Kk Wu, Songtao Zhan, Qun Cao, Jianxiong Shen
Posterior spinal reconstruction with rods and pedicle screws has been widely used to corrects coliosis and other forms of degenerative spinal deformities. However, insertion of pedicle screwsis often clinically challenging, particularlyin patients with severe deformity. Bioelectrical impedance analysis is a technique that exploits the electrical properties of biological organs and tissues to indicate their compositions. Bioelectrical impedance measurement is non-invasive, simple, with adequate repeatability, and at a relatively low cost...
2018: American Journal of Translational Research
https://www.readbyqxmd.com/read/30092478/intracranial-venous-hypertension-in-craniosynostosis-mechanistic-underpinnings-and-therapeutic-implications
#18
REVIEW
George Zaki Ghali, Michael George Zaki Ghali, Emil Zaki Ghali, Visish M Srinivasan, Kathryn Wagner, Alexis Rothermel, Jesse Taylor, Jeremiah Johnson, Peter Kan, Sandi Lam, Gavin Britz
Patients with complex, multisutural, and syndromic craniosynostosis frequently exhibit intracranial hypertension. The intracranial hypertension cannot be entirely attributed to craniocephalic disproportion with calvarial restriction as cranial vault expansion does not consistently alleviate elevated intracranial pressure. Evidence most strongly supports a multifactorial interaction, including venous hypertension along with other pathogenic processes. Patients with craniosynostosis exhibit marked venous anomalies, including stenosis of the jugular/sigmoid complex and transverse sinuses, as well as extensive transosseous venous collaterals...
August 6, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/30089132/a-novel-ultra-light-suction-device-for-mechanical-characterization-of-skin
#19
Bettina Müller, Julia Elrod, Marco Pensalfini, Raoul Hopf, Oliver Distler, Clemens Schiestl, Edoardo Mazza
Suction experiments have been extensively applied for skin characterization. In these tests the deformation behavior of superficial tissue layers determines the elevation of the skin surface observed when a predefined negative (suction) pressure history is applied. The ability of such measurements to differentiate between skin conditions is limited by the variability of the elevation response observed in repeated experiments. The scatter was shown to be associated with the force exerted by the observer when holding the instrument against the skin...
2018: PloS One
https://www.readbyqxmd.com/read/30088569/digital-platform-for-planning-facial-asymmetry-orthodontic-surgical-treatment-preparation
#20
Octavio Cintra, Simonas Grybauskas, Carlos Jorge Vogel, Dalia Latkauskiene, Nilo Alves Gama
Dentofacial deformities usually are surgically treated, and 3D virtual planning has been used to favor accurate outcomes. Cases reported in the present article show that orthognathic surgery carried out to correct facial asymmetries does not comprise only one treatment protocol. 3D virtual planning might be used for surgical planning, but it should also be used to diagnose the deformity, thus allowing for an analysis of the best-recommended possibilities for the orthodontic preparation that suits each individual case...
May 2018: Dental Press Journal of Orthodontics
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