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Rotational osteotomy

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https://www.readbyqxmd.com/read/28927954/systematic-three-dimensional-analysis-of-wafer-based-maxillary-repositioning-procedures-in-orthognathic-surgery
#1
Timo Dreiseidler, Max-Philipp Lentzen, Matthias Zirk, Ali-Farid Safi, Joachim E Zoeller, Matthias Kreppel
PURPOSE: Little is known about the three-dimensional (3D) transfer accuracy in maxillary repositioning procedures based on conventionally manufactured dental-mounted wafers. The purpose of the present study was a systematic 3D analysis for wafer-based maxillary positioning in orthognathic surgery. MATERIALS AND METHODS: A total of 92 patients underwent Le Fort I in addition to mandibular bilateral sagittal split osteotomies (BSSO). Alignment of the pre- and postsurgical CBCT data sets allowed measuring maxillary position changes in axial, sagittal and transversal directions...
August 31, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28906565/correction-of-antebrachial-angulation-rotation-deformities-in-dogs-with-oblique-plane-inclined-osteotomies
#2
Samuel P Franklin, Ryan K Dover, Natalia Andrade, Desiree Rosselli, Kevin M Clarke
OBJECTIVE: To describe oblique plane inclined osteotomies and report preliminary data on outcomes in dogs treated for antebrachial angulation-rotation deformities. STUDY DESIGN: Retrospective clinical study. ANIMALS: Six antebrachii from 5 dogs. METHODS: Records of dogs with antebrachial angulation-rotation deformities treated with oblique plane inclined osteotomies were reviewed. Postoperative frontal, sagittal, and transverse plane alignments were assessed subjectively, and alignment in the frontal and sagittal planes was quantified on radiographs...
September 14, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28904628/tibial-derotational-osteotomies-in-two-neuromuscular-populations-comparing-cerebral-palsy-with-myelomeningocele
#3
R M Thompson, S Ihnow, L Dias, V Swaroop
PURPOSE: To review the outcomes of tibial derotational osteotomies (TDOs) as a function of complication and revision surgery rates comparing a cohort of children with myelodysplasia to a cohort with cerebral palsy (CP). METHODS: A chart review was completed on TDOs performed in a tertiary referral centre on patients with myelodysplasia or CP between 1985 and 2013 in patients aged > 5 years with > 2 years follow-up. Charts were reviewed for demographics, direction/degree of derotation, complications and need for re-derotation...
August 1, 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28895433/corrective-osteotomies-of-phalangeal-and-metacarpal-malunions-using-patient-specific-guides-ct-based-evaluation-of-the-reduction-accuracy
#4
Stefanie Hirsiger, Andreas Schweizer, Junichi Miyake, Ladislav Nagy, Philipp Fürnstahl
BACKGROUND: Surgical planning of corrective osteotomies is traditionally based on conventional radiographs and clinical findings. In the past 10 years, 3-dimensional (3D) preoperative planning approaches with patient-specific guides have been developed. However, the application of this technology to posttraumatic deformities of the metacarpals and phalangeal bones has not yet been investigated. Our goal was to evaluate the feasibility of the surgical application to the latter and to evaluate the extent and precision of correction...
September 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28894684/a-preliminary-algorithm-using-spine-measurement-software-to-predict-sagittal-alignment-following-pedicle-subtraction-osteotomy
#5
Robert K Merrill, Jun S Kim, Dante M Leven, Joshua J Meaike, Joung Heon Kim, Samuel K Cho
STUDY DESIGN: Retrospective case series. OBJECTIVE: To evaluate if spine measurement software can simulate sagittal alignment following pedicle subtraction osteotomy (PSO). METHODS: We retrospectively reviewed consecutive adult spinal deformity patients who underwent lumbar PSO. Sagittal measurements were performed on preoperative lateral, standing radiographs. Sagittal measurements after simulated PSO were compared to actual postoperative measurements...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28893435/gradual-bone-transfer-for-the-correction-of-the-pubic-diastasis-using-the-ilizarov-technique-in-closure-of-bladder-and-cloacal-exstrophy
#6
Hiroshi Kusakabe, Katsuhiko Ueoka, Shinichiro Takayama, Atsuhito Seki
BACKGROUND: In the patient of the cloacal exstrophy, cloaca with local abdominal wall is disrupted and exposed inner surface of the bladder needs early closure. Pelvic osteotomies are required for severe cases whose bladder cannot be closed by the suture of soft tissue only. We developed a technique involving the gradual positioning of bone fragments using a light, Ilizarov external fixator. The usefulness of the technique was assessed. METHODS: We enrolled 3 patients with cloacal exstrophy and 1 with bladder exstrophy as a gradual transfer group and 6 patients who were treated by other osteotomies as a control group...
September 8, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28888571/accuracy-and-early-clinical-outcome-of-3-dimensional-planned-and-guided-single-cut-osteotomies-of-malunited-forearm-bones
#7
Simon Roner, Lazaros Vlachopoulos, Ladislav Nagy, Andreas Schweizer, Philipp Fürnstahl
PURPOSE: To investigate the reduction accuracy of 3-dimensional planned single-cut osteotomies (SCOTs) of the forearm that were performed using patient-specific guides. METHODS: A retrospective analysis of SCOTs performed between 2012 and 2014 was performed. Ten patients (age, 15-59 years) with 6 malunions of the ulna and 6 malunions of the radius were identified. The reduction accuracy was assessed by comparing the 3-dimensional preoperative plan of each osteotomy with the superimposed bone model extracted from postoperative computed tomography data...
September 6, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28869062/supination-contractures-in-brachial-plexus-birth-palsy-long-term-upper-limb-function-and-recurrence-after-forearm-osteotomy-or-nonsurgical-treatment
#8
Wieneke P Metsaars, Jan Ferdinand Henseler, Jochem Nagels, Rob G Nelissen
PURPOSE: Forearm osteotomy for supination deformity in brachial plexus birth palsy (BPBP) may lead to improved function of the upper limb. However, recurrence rates are high and limit satisfactory results. METHODS: We reviewed the long-term outcome of the entire upper limb of 22 BPBP patients with a supination contracture who were treated by forearm osteotomy and compared them with an age-matched group that was treated nonsurgically (n = 28). Recurrence was defined as a passive pronation below 30°...
August 28, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28862571/utility-of-intraoperative-rotational-thromboelastometry-in-thoracolumbar-deformity-surgery
#9
Jian Guan, Chad D Cole, Meic H Schmidt, Andrew T Dailey
OBJECTIVE Blood loss during surgery for thoracolumbar scoliosis often requires blood product transfusion. Rotational thromboelastometry (ROTEM) has enabled the more targeted treatment of coagulopathy, but its use in deformity surgery has received limited study. The authors investigated whether the use of ROTEM reduces transfusion requirements in this case-control study of thoracolumbar deformity surgery. METHODS Data were prospectively collected on all patients who received ROTEM-guided blood product management during long-segment (≥ 7 levels) posterior thoracolumbar fusion procedures at a single institution from April 2015 to February 2016...
September 1, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28839184/achievability-of-3d-planned-bimaxillary-osteotomies-maxilla-first-versus-mandible-first-surgery
#10
Jeroen Liebregts, Frank Baan, Martien de Koning, Edwin Ongkosuwito, Stefaan Bergé, Thomas Maal, Tong Xi
The present study was aimed to investigate the effects of sequencing a two-component surgical procedure for correcting malpositioned jaws (bimaxillary osteotomies); specifically, surgical repositioning of the upper jaw-maxilla, and the lower jaw-mandible. Within a population of 116 patients requiring bimaxillary osteotomies, the investigators analyzed whether there were statistically significant differences in postoperative outcome as measured by concordance with a preoperative digital 3D virtual treatment plan...
August 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28833285/a-novel-jig-arm-to-measure-tibial-plateau-angle-during-tibial-plateau-leveling-osteotomy
#11
Kyle N Restle, Jeffery J Biskup
OBJECTIVE: To determine the ability of a novel device attached to the proximal tibial plateau leveling osteotomy (TPLO) jig pin to accurately predict intraoperative change in tibial plateau angle (TPA). STUDY DESIGN: In vitro cadaveric study. SAMPLE POPULATION: Left hindlimbs of adult dogs (n = 9). METHODS: A modified Slocum tibial plateau leveling (TPL) jig with the Rotational Osteotomy Measuring Arm (ROMA) was placed on the tibia and a radial TPLO osteotomy was performed...
August 22, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28830302/regenerative-medicine-approaches-for-the-treatment-of-pediatric-physeal-injuries
#12
Nichole Shaw, Christopher Erickson, Stephanie Bryant, Virginia Ferguson, Melissa Diane Krebs, Nancy Hadley-Miller, Karin A Payne
The physis, or growth plate, is a cartilaginous region at the end of children's long bones that serves as the primary center for longitudinal growth and characterizes the immature skeleton. Musculoskeletal injury including fracture, infection, malignancy, or iatrogenic damage has risk of physeal damage. Physeal injuries account for 30% of pediatric fractures and may result in impaired bone growth. Once damaged, cartilage tissue within the physis is often replaced by unwanted bony tissue, forming a 'bony bar' that can lead to complications such as complete growth arrest, angular or rotational deformities, and altered joint mechanics...
August 22, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28808753/segmental-torsion-assessment-is-a-reliable-method-for-in-depth-analysis-of-femoral-alignment-in-computer-tomography
#13
Peter Wilhelm Ferlic, Armin Runer, Christopher Seeber, Maria Thöni, Gerd Seitlinger, Michael Christian Liebensteiner
PURPOSE: De-rotational osteotomies are indicated in patients with pathologic femoral torsion. However, there is disagreement whether an osteotomy should be performed proximally or distally. Conventionally only the total torsion is measured, which does not allow differentiation between a torsional deformity located in the proximal or distal metaphysis or the diaphysis. The aim of this study is to validate a new multi-level measurement protocol for evaluation of the magnitude of torsion of the respective femoral segments in CT...
August 14, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28782700/effects-of-intertrochanteric-osteotomy-plane-and-pre-operative-femoral-anteversion-on-the-post-operative-morphology-of-the-proximal-femur-in-transtrochanteric-anterior-rotational-osteotomy-3d-ct-based-simulation-study
#14
Kazuhiko Sonoda, Goro Motomura, Satoshi Ikemura, Yusuke Kubo, Takuaki Yamamoto, Yasuharu Nakashima
BACKGROUND: Transtrochanteric anterior rotational osteotomy (ARO) is joint-preserving surgery for patients with osteonecrosis of the femoral head (ONFH).During ARO, femoral neck-shaft varus angulation by changing intertrochanteric osteotomy plane is often designed to obtain a sufficient post-operative intact ratio. However, the effect of intertrochanteric osteotomy plane on post-operative femoral anteversion has not been well examined.Therefore we performed a simulation study of ARO to determinehow intertrochanteric osteotomy plane and pre-operative femoral anteversionaffect both femoral neck-shaft varus angle and post-operative femoral anteversion...
August 3, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28777285/3d-modeling-of-lower-extremities-with-biplanar-radiographs-reliability-of-measures-on-subsequent-examinations
#15
David E Westberry, Ashley M Carpenter
BACKGROUND: Biplanar radiography with 3-dimensional (3D) modeling (EOS) provides a comprehensive assessment of lower limb alignment in an upright weight-bearing position with less radiation than conventional radiography. A study was performed to assess the consistency and reliability of 2 lower extremity 3D biplanar radiograph models created at least 1 year apart in a pediatric population. METHODS: All patients who had 2 lower extremity radiographic evaluations with EOS performed at visits a minimum of 1 year apart were reviewed...
August 2, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28770402/kinematic-efficacy-of-supplemental-anterior-lumbar-interbody-fusion-at-lumbosacral-levels-in-thoracolumbosacral-deformity-correction-with-and-without-pedicle-subtraction-osteotomy-at-l3-an-in-vitro-cadaveric-study
#16
Benny T Dahl, Jonathan A Harris, Manasa Gudipally, Mark Moldavsky, Saif Khalil, Brandon S Bucklen
PURPOSE: Pedicle subtraction osteotomy (PSO) is performed to treat rigid, sagittal spinal deformities, but high rates of implant failure are reported. Anterior lumbar interbody fusion has been proposed to reduce this risk, but biomechanical investigation is lacking. The goal of this study was to quantify the (1) destabilizing effects of a lumbar osteotomy and (2) contribution of anterior lumbar interbody fusion (ALIF) at the lumbosacral junction as recommended in literature. METHODS: Fourteen fresh human thoracolumbosacral spines (T12-S1) were tested in flexion-extension (FE), lateral bending (LB), and axial rotation (AR)...
August 2, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28770155/skeletal-stability-following-mandibular-advancement-is-it-influenced-by-the-magnitude-of-advancement-or-changes-of-the-mandibular-plane-angle
#17
Reza Tabrizi, Mahsa Nili, Ehsan Aliabadi, Fereydoun Pourdanesh
OBJECTIVES: The aim of this study was to investigate the effects of advancement magnitude and changes in mandibular plane angle on the stability of mandibular advancement. MATERIALS AND METHODS: This retrospective cohort study evaluated the postoperative stability of mandibular advancement in class II skeletal subjects who underwent bilateral sagittal split osteotomy. Radiographs taken preoperatively, immediately postoperatively and 1 year postoperatively were traced and analyzed using linear and angular measurements...
June 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28749032/hip-internal-rotation-in-cerebral-palsy-does-femoral-derotation-osteotomy-influence-abductor-insufficiency
#18
Bruno Dohin
No abstract text is available yet for this article.
September 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28742788/computer-assisted-corrective-osteotomy-of-malunited-pediatric-radial-neck-fractures-three-dimensional-postoperative-accuracy-and-clinical-outcome
#19
Lizzy Weigelt, Philipp Fürnstahl, Andreas Schweizer
Neglected or incorrect treatment of pediatric radial neck fractures may lead to symptomatic malunions. Computer-assisted corrective osteotomies with patient-specific guides have been proposed as a promising technique for the reconstruction of malunited long bone deformities. The aim of this study was to evaluate the accuracy and clinical outcome of this technique in children with malunited fractures of the radial neck. Four children (two male, two female; mean age 12 (10-16) years) underwent computer-assisted closing wedge osteotomy of the radial neck...
July 24, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28719548/forearm-pronation-osteotomy-for-supination-contracture-secondary-to-obstetrical-brachial-plexus-palsy-a-retrospective-cohort-study
#20
Aharon Z Gladstein, Brant Sachleben, Emily S Ho, Alison Anthony, Howard M Clarke, Sevan Hopyan
BACKGROUND: Obstetrical brachial plexus palsy can lead to fixed forearm supination contracture. Fixed supination may lead to functional deficits as the affected hand cannot be positioned optimally for activities on a desk such as writing and typing, or for using tools including utensils, which require a neutral or pronated forearm. Forearm pronation osteotomy has been used to address this problem, although the functional benefit over nonoperative management has not been clearly defined...
July 17, 2017: Journal of Pediatric Orthopedics
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