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Rotational osteotomy

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https://www.readbyqxmd.com/read/29146395/correlation-between-intraoperative-proximal-segment-rotation-and-post-sagittal-split-ramus-osteotomy-relapse-a-three-dimensional-cone-beam-computed-tomography-study
#1
B-J Choi, B-S Lee, Y-D Kwon, J-W Lee, S-U Yun, K-S Ryu, J-Y Ohe
This study evaluated the effects of proximal segment rotation and the extent of mandibular setback on post-sagittal split ramus osteotomy (SSRO) relapse using three-dimensional (3D) analysis. Thirty-one patients diagnosed with a skeletal class III malocclusion who underwent SSRO alone were enrolled in this study. The movements of the mandibular condyles were assessed using cone beam computed tomography (CBCT) and a 3D imaging program at ≤1 month before the operation (T0), 1 week after the operation (T1), and 6 months (T2) and 1year (T3) postoperative...
November 13, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29117834/open-wedge-osteotomy-with-ulnar-shortening-for-madelung-deformity-using-a-computer-generated-template
#2
Sho Yanagisawa, Takehiko Takagi, Tsuyoshi Murase, Yuka Kobayashi, Masahiko Watanabe
A variety of osteotomies have been reported to correct Madelung deformity using plain radiographs. However, evaluation of the deformity using 2-dimensional plain radiography is difficult because of its complex 3-dimensional nature. Therefore, we performed corrective osteotomy using recently developed 3D simulation technology on an adult woman with Madelung deformity, and achieved an excellent outcome. In this study, we calculated the amount of parallel displacement as well as the rotational angle for more precise correction, and performed open wedge osteotomy...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29100001/effects-of-anterior-closing-wedge-tibial-osteotomy-on-anterior-cruciate-ligament-force-and-knee-kinematics
#3
Kent T Yamaguchi, Edward C Cheung, Keith L Markolf, Daniel V Boguszewski, Justin Mathew, David R McAllister, Frank A Petrigliano
BACKGROUND: A certain percentage of patients undergoing anterior cruciate ligament (ACL) reconstruction will experience graft failure, and there is mounting evidence that an increased posterior tibial slope (PTS) may be a predisposing factor. Theoretically, under tibiofemoral compression force (TFC), a reduced PTS would induce less anterior tibial translation (ATT) and lower ACL force. HYPOTHESIS: Ten-degree anterior closing wedge osteotomy of the proximal tibia will significantly reduce ACL force and alter knee kinematics during robotic testing...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29096933/modified-lateral-orbital-wall-decompression-in-graves-orbitopathy-using-computer-assisted-planning
#4
S Spalthoff, P Jehn, R Zimmerer, M Rana, N-C Gellrich, J Dittmann
Graves' orbitopathy, a condition seen in the autoimmune syndrome Graves' disease, affects the fatty tissue and muscles inside the orbit. Graves' orbitopathy is associated with increasing exophthalmos and sometimes leads to compressive dysthyroid optic neuropathy, resulting in progressive vision loss. Dysthyroid compressive optic neuropathy, functional problems, and cosmetic problems are the main indications for surgical decompression of the orbit, especially if conservative treatment has not led to a reduction in symptoms...
October 30, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29080951/morphological-variation-of-the-anterior-inferior-iliac-spine-affects-hip-range-of-motion-in-flexion-after-rotational-acetabular-osteotomy
#5
Hidetoshi Hamada, Masaki Takao, Takashi Sakai, Nobuhiko Sugano
PURPOSE: Reduced range of motion (ROM) in flexion and internal rotation are associated with impaired activities of daily living (ADL) after rotational acetabular osteotomy (RAO). This study focused on the morphological variation of the anterior inferior iliac spine in developmental dysplasia of the hip (DDH) and its impact on post-operative bony ROM after RAO. This study aimed to investigate the association between bony ROM after RAO and pre-operative morphological factors of the pelvis and femur, including a positional variation of the anterior inferior iliac spine...
October 28, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29071376/-corrective-procedures-and-indications-for-cavovarus-foot-deformities-in-children-and-adolescents
#6
REVIEW
J Hamel
Cavovarus deformities in children and adolescents require sound considerations concerning the timing for corrective surgery. Progression can be recognized best by repeated pedographic examination with evaluation of the typical features of cavovarus deformity. Surgical correction consists of a combination of soft tissue release, bony realignment, and restoration of muscle balance. In most cases plantar or medioplantar soft tissue release should be considered, whereas calf muscle lengthening is rarely indicated...
October 25, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29049196/three-dimensional-reduction-and-finite-element-analysis-improves-the-treatment-of-pelvic-malunion-reconstructive-surgery-a-case-report
#7
Sascha Kurz, Philipp Pieroh, Maximilian Lenk, Christoph Josten, Jörg Böhme
RATIONALE: Pelvic malunion is a rare complication and is technically challenging to correct owing to the complex three-dimensional (3D) geometry of the pelvic girdle. Hence, precise preoperative planning is required to ensure appropriate correction. Reconstructive surgery is generally a 2- or 3-stage procedure, with transiliac osteotomy serving as an alternative to address limb length discrepancy. PATIENT CONCERNS: A 38-year-old female patient with a Mears type IV pelvic malunion with previous failed reconstructive surgery was admitted to our department due to progressive immobilization, increasing pain especially at the posterior pelvic arch and a leg length discrepancy...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29037536/open-reduction-and-internal-fixation-for-nonunion-of-extra-articular-distal-humeral-fractures-in-patients-70-years-and-older
#8
Soo Min Cha, Hyun Dae Shin
HYPOTHESIS: The study purpose was to report the clinical and radiologic outcomes of osteosynthesis by open reduction and internal fixation for nonunion of extra-articular distal humeral fractures in patients aged 70 years or older. MATERIALS AND METHODS: This retrospective study included 28 patients who received osteosynthesis treatment between March 2010 and December 2015. Primary conservative treatment had failed in all patients. All surgical procedures were performed via the posterior approach without olecranon osteotomy and with the use of double-locking plates for each column...
October 13, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29032874/rotational-corrective-osteotomy-for-malunited-distal-diaphyseal-radius-fractures-in-children-and-adolescents
#9
Toshiyuki Kataoka, Kunihiro Oka, Tsuyoshi Murase
PURPOSE: To report our method of computer-planned rotational corrective osteotomy for malunited distal diaphyseal radius fractures in children and adolescents using a custom jig and to review the results of 4 cases. METHODS: Four patients (mean age, 13 years; range, 11-16 years) underwent computer-planned rotational corrective osteotomy for malunited distal diaphyseal radius fracture using a custom jig. We retrospectively evaluated their radiographic and clinical data...
October 9, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29032860/biomechanical-comparison-of-two-different-locking-plates-for-open-wedge-high-tibial-osteotomy
#10
Nienke van Egmond, Dennis Janssen, Gerjon Hannink, Nico Verdonschot, Albert van Kampen
BACKGROUND: The purpose of this study was to compare the mechanical stability of a relatively thin locking plate (FlexitSystem implant) with a relatively firm locking plate (TomoFix implant), both used for opening wedge high tibial osteotomy. METHODS: Seven fresh frozen paired human cadaveric tibiae were used. The opening wedge high tibial osteotomies in the left tibiae were fixated with the FlexitSystem implant and in the right tibiae with the TomoFix implant. The tibiae were CT-scanned to determine the bone mineral density...
October 9, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29021887/a-modified-technique-of-fixation-for-proximal-femoral-valgus-osteotomy-in-abnormal-bone-a-report-of-two-cases
#11
S Logheswaren, A R Sulaiman, I Munajat
The ideal size of intramedullary device to fix corrective osteotomy of proximal femur in abnormal bone in children and small patients may not be easily available. We report the successful use of Rush rod in combination with multiple Kirschner wires to fix the corrective osteotomy of coxa vara and shepherd crook deformity in two patients with osteogenesis imperfecta and fibrous dysplasia. The union was achieved on time, neck shaft angle and rotation were maintained.
July 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28979604/management-of-humeral-defects-in-anterior-shoulder-instability
#12
Maria Valencia Mora, Miguel Ángel Ruiz-Ibán, Jorge Diaz Heredia, Raquel Ruiz Diaz, Ricardo Cuéllar
BACKGROUND: A Hill Sachs lesion is a posterior-superior bony defect of the humeral head caused by a compression of the hard glenoid rim against the soft cancellous bone in the context of an anterior instability episode. The presence of these humeral defects increases with the number of dislocations and larger lesions are associated with a greater chance of development of recurrent instability and recurrence after surgery. Also its location and pattern, in particular the so-called engaging Hill-Sachs, are associated with poor prognosis...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28971089/posterior-sacroiliac-osteotomy-an-alternative-to-the-ilioinguinal-approach-for-pelvic-reconstruction-in-misalignment-lesions
#13
João Antonio Matheus Guimarães, Vinícius Magno da Rocha, André Luiz Loyelo Barcellos
Pelvic ring fractures occur in association with potentially fatal lesions, whose treatment is a priority in the polytrauma setting. As consequence, the definitive orthopedic approach may be postponed, leading patients to chronic and potentially disabling deformities. The treatment of these deformities is a challenge, requiring highly complex and staged surgical reconstructions. The ilioinguinal approach has been widely used in these surgeries, because it allows the release and mobilization of the hemipelvis and, in some cases, anterior fixation of the sacroiliac joint...
2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28948339/predicted-osteotomy-planes-are-accurate-when-using-patient-specific-instrumentation-for-total-knee-arthroplasty-in-cadavers-a-descriptive-analysis
#14
A J Kievit, J G G Dobbe, G J Streekstra, L Blankevoort, M U Schafroth
PURPOSE: Malalignment of implants is a major source of failure during total knee arthroplasty. To achieve more accurate 3D planning and execution of the osteotomy cuts during surgery, the Signature (Biomet, Warsaw) patient-specific instrumentation (PSI) was used to produce pin guides for the positioning of the osteotomy blocks by means of computer-aided manufacture based on CT scan images. The research question of this study is: what is the transfer accuracy of osteotomy planes predicted by the Signature PSI system for preoperative 3D planning and intraoperative block-guided pin placement to perform total knee arthroplasty procedures? METHODS: The transfer accuracy achieved by using the Signature PSI system was evaluated by comparing the osteotomy planes predicted preoperatively with the osteotomy planes seen intraoperatively in human cadaveric legs...
September 25, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28945686/an-anatomic-study-on-whether-femoral-version-originates-in-the-neck-or-the-shaft
#15
Hunter D Archibald, Kathleen F Petro, Raymond W Liu
BACKGROUND: Femoral anteversion is generally asymptomatic but can result in lower extremity issues like patellofemoral instability and pain. Surgical correction of anteversion can be performed proximal, mid shaft or distal. A better understanding of the specific location of the rotational deformity can help guide the optimal location of the osteotomy. In this study we examine the contribution of the femoral neck and shaft to total femoral version. METHODS: We studied 590 pairs of well-preserved cadaveric femurs...
September 22, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28927954/systematic-three-dimensional-analysis-of-wafer-based-maxillary-repositioning-procedures-in-orthognathic-surgery
#16
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
#17
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
#18
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
#19
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
#20
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
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