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Rotational osteotomy

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https://www.readbyqxmd.com/read/27927520/staged-anterior-release-and-posterior-instrumentation-in-correction-of%C3%A2-severe-rigid-scoliosis-cobb-angle-100-degrees
#1
Pankaj Kandwal, Ankur Goswami, G Vijayaraghavan, K R Subhash, Ashok Jaryal, B N Upendra, Arvind Jayaswal
PURPOSE: Severe rigid curves present a big challenge to the treating spine surgeon. We evaluated the outcome of staged anterior release and posterior instrumentation for rigid scoliosis. METHODS: Twenty-one patients with an average age of 14.4 years (range 11-17) having a rounded severe rigid scoliosis (Cobb angle >100 degrees) underwent surgical correction. Six patients had congenital scoliosis, 13 idiopathic scoliosis, and 2 syndromic. All patients underwent anterior release in Stage I with one or more Ponte osteotomies and in Stage II with all pedicle screw instrumentation, and 13 of the patients underwent an asymmetric pedicle subtraction osteotomy at the apex...
July 2016: Spine Deformity
https://www.readbyqxmd.com/read/27926680/humeral-retroversion-in-children-with-shoulder-internal-rotation-contractures-secondary-to-upper-trunk-neonatal-brachial-plexus-palsy
#2
Michael L Pearl, Michael Batech, Fabian van de Bunt
BACKGROUND: The most common sequela of neonatal brachial plexus palsy is an internal rotation contracture of the shoulder that impairs function and leads to skeletal deformation of the glenohumeral joint. Treatment options include release, transfers, and humeral osteotomy, all ultimately striving for better function through increased external rotation. Prior studies have shown that neonatal brachial plexus palsy alters humeral retroversion but with conflicting findings. We studied retroversion in children with internal rotation contractures from neonatal brachial plexus palsy to clarify its effect on version and surgical planning...
December 7, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27921206/periacetabular-osteotomy-provides-higher-survivorship-than-rim-trimming-for-acetabular-retroversion
#3
Corinne A Zurmühle, Helen Anwander, Christoph E Albers, Markus S Hanke, Simon D Steppacher, Klaus A Siebenrock, Moritz Tannast
BACKGROUND: Acetabular retroversion can cause impaction-type femoroacetabular impingement leading to hip pain and osteoarthritis. It can be treated by anteverting periacetabular osteotomy (PAO) or acetabular rim trimming with refixation of the labrum. There is increasing evidence that acetabular retroversion is a rotational abnormality of the entire hemipelvis and not a focal overgrowth of the anterior acetabular wall, which favors an anteverting PAO. However, it is unknown if this larger procedure would be beneficial in terms of survivorship and Merle d'Aubigné scores in a midterm followup compared with rim trimming...
December 5, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27919673/proximal-tibial-anterior-open-wedge-oblique-osteotomy-a-novel-technique-to-correct-genu-recurvatum
#4
Tae Woo Kim, Sahnghoon Lee, Jung-Ro Yoon, Hyuk-Soo Han, Myung Chul Lee
BACKGROUND: For successful acute correction of genu recurvatum, accurate correction of plateau angle, restoration of anatomical axis, rigid fixation, and preservation of patellar height are essential. However, a surgical treatment that satisfies all these conditions has not yet been established. The purpose of this study was to evaluate the novel technique of proximal tibial anterior open-wedge oblique osteotomy (PT-AOWOO) for the treatment of genu recurvatum. METHODS: Five patients with genu recurvatum underwent PT-AOWOO from 2008 to 2013...
December 2, 2016: Knee
https://www.readbyqxmd.com/read/27911364/an-intramedullary-locking-nail-for-standardized-fixation-of-femur-osteotomies-to-analyze-normal-and-defective-bone-healing-in-mice
#5
Tina Histing, Michael D Menger, Tim Pohlemann, Romano Matthys, Tobias Fritz, Patric Garcia, Moritz Klein
Bone healing models are essential to the development of new therapeutic strategies for clinical fracture treatment. Furthermore, mouse models are becoming more commonly used in trauma research. They offer a large number of mutant strains and antibodies for the analysis of the molecular mechanisms behind the highly differentiated process of bone healing. To control the biomechanical environment, standardized and well-characterized osteosynthesis techniques are mandatory in mice. Here, we report on the design and use of an intramedullary nail to stabilize open femur osteotomies in mice...
November 13, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27905061/one-third-of-hips-after-periacetabular-osteotomy-survive-30-years-with-good-clinical-results-no-progression-of-arthritis-or-conversion-to-tha
#6
Till Dominic Lerch, Simon Damian Steppacher, Emanuel Francis Liechti, Moritz Tannast, Klaus Arno Siebenrock
BACKGROUND: Since its first description in 1984, periacetabular osteotomy (PAO) has become an accepted treatment for hip dysplasia. The 30-year survivorship with this procedure has not been reported. Because these patients are often very young at the time of surgery, long-term followup and identification of factors associated with poor outcome could help to improve patient selection. QUESTIONS/PURPOSES: Looking at the initial group of patients with hip dysplasia undergoing PAO at the originator's institution, we asked: (1) What is the cumulative 30-year survival rate free from conversion to THA, radiographic progression of osteoarthritis, and/or a Merle d'Aubigné-Postel score < 15? (2) Did hip function improve and pain decrease? (3) Did radiographic osteoarthritis progress? (4) What are the factors associated with one or more of the three endpoints: THA, radiographic progression of osteoarthritis, and/or Merle d'Aubigné-Postel score < 15? METHODS: We retrospectively evaluated the first 63 patients (75 hips) who underwent PAO for hip dysplasia between 1984 and 1987...
November 30, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27896214/a-case-of-severe-mandibular-retrognathism-with-bilateral-condylar-deformities-treated-with-le-fort-i-osteotomy-and-two-advancement-genioplasty-procedures
#7
Masahiro Nakamura, Takeshi Yanagita, Tatsushi Matsumura, Takashi Yamashiro, Seiji Iida, Hiroshi Kamioka
We report a case involving a young female patient with severe mandibular retrognathism accompanied by mandibular condylar deformity that was effectively treated with Le Fort I osteotomy and two genioplasty procedures. At 9 years and 9 months of age, she was diagnosed with Angle Class III malocclusion, a skeletal Class II jaw relationship, an anterior crossbite, congenital absence of some teeth, and a left-sided cleft lip and palate. Although the anterior crossbite and narrow maxillary arch were corrected by interceptive orthodontic treatment, severe mandibular hypogrowth resulted in unexpectedly severe mandibular retrognathism after growth completion...
November 2016: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/27892801/stability-and-migration-across-femoral-varus-derotation-osteotomies-in-children-with-neuromuscular-disorders
#8
Peter Buxbom, Stig Sonne-Holm, Niels Ellitsgaard, Christian Wong
Background and purpose - Studies have indicated that one-third of children with cerebral palsy (CP) develop dislocation of the hip that needs surgical intervention. When hip dislocation occurs during childhood surgical treatment consists of tenotomies, femoral varus derotation osteotomy (VDRO), and acetabuloplasty. Relapse is observed in one-fifth of cases during adolescence. In this prospective cohort study, we performed a descriptive evaluation of translation and rotation across VDROs in children with neuromuscular disorders and syndromes by radiostereometric analysis (RSA)...
November 28, 2016: Acta Orthopaedica
https://www.readbyqxmd.com/read/27872989/is-the-contralateral-tibia-a-reliable-template-for-reconstruction-a-three-dimensional-anatomy-cadaveric-study
#9
Pascal Schenk, Lazaros Vlachopoulos, Andreas Hingsammer, Sandro F Fucentese, Philipp Fürnstahl
PURPOSE: The contralateral anatomy is regularly used as a reconstruction template for corrective osteotomies of several deformities and pathological conditions. However, there is lack of evidence that the intra-individual differences between both tibiae are sufficiently small to use the contralateral tibia as a 3D reconstruction template for complex osteotomies. The aim of this study was to evaluate the intra-individual side differences of the tibia in length, torsion, angulation, and translation using 3D measurement techniques...
November 21, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27858238/instrumentation-failure-following-pedicle-subtraction-osteotomy-the-role-of-rod-material-diameter-and-multi-rod-constructs
#10
Andrea Luca, Claudia Ottardi, Maurizio Sasso, Liliana Prosdocimo, Luigi La Barbera, Marco Brayda-Bruno, Fabio Galbusera, Tomaso Villa
PURPOSE: Pedicle subtraction osteotomy (PSO) has a complication rate noticeably higher than other corrective surgical techniques used for the treatment of spinal sagittal imbalance. In particular, rod breakage and pseudoarthrosis remain burning issues of this technique. Goal of this study was to investigate the biomechanical performance of several hardware constructs. METHODS: The study was performed using two validated finite element models of the lumbosacral spine (L1-S1) incorporating a PSO on L3 and L4, respectively...
November 17, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27844117/are-advanced-three-dimensional-imaging-studies-always-needed-to-measure-the-coronal-knee-alignment-of-the-lower-extremity
#11
Jean Yves Lazennec, Quentin Chometon, Dominique Folinais, Christopher B Robbins, Aidin Eslam Pour
BACKGROUND: Coronal malalignment of the lower extremity is closely related to the onset and progression of osteoarthritis. Restoring satisfactory alignment after tibial osteotomy improves the long-term success of this conservative surgery. The purpose of our study was to determine (1) if there is a difference between two-dimensional (2D) and 3D measurements of the hip-knee-ankle (HKA) angle between the mechanical axes of the femur and the tibia, (2) which parameter most affects 2D-3D HKA measurement, and (3) the percentage of patients who are at risk of error in HKA measurement...
November 14, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27833839/patient-reported-outcomes-of-femoral-osteotomy-and-total-hip-arthroplasty-for-osteonecrosis-of-the-femoral-head-a-prospective-case-series-study
#12
Yusuke Kubo, Takuaki Yamamoto, Goro Motomura, Kazuyuki Karasuyama, Kazuhiko Sonoda, Yukihide Iwamoto
BACKGROUND: Patient-reported scoring systems have recently been used after surgical procedures. The purpose of this prospective study was to evaluate the patient-reported outcomes of femoral osteotomy and total hip arthroplasty (THA) for osteonecrosis of the femoral head (ONFH). METHODS: Forty-two symptomatic ONFH patients with asymptomatic contralateral hip underwent either transtrochanteric anterior rotational osteotomy (ARO) or THA as a primary operation. Of these, 20 patients whose contralateral hips remained asymptomatic at the final follow-up (more than 1 year postoperatively) were recruited to participate in this study...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27833341/minimizing-relapse-in-mandibular-asymmetry-correction-by-bssro-with-intentional-osteotomy-of-distal-segment-a-prospective-study
#13
R Vimalraj, N Jayakumar, K George Varghese, S Mohan, Bobby John, Somil Chhag
INTRODUCTION: Surgical correction of the patients with mandibular asymmetry by bilateral sagittal split ramus osteotomy (BSSRO) creats remarkable results in the immediate post operative period, but it carries a high risk of relapse by powerful muscle forces and the osteotomized segments. To minimize this risk, literatures highlight the procedure of an intentional osteotomy and stripping of muscles. A prospective study was conducted in Government Dental College, Kottayam, Kerala, to assess the effect of intentional osteotomy of posterior part of distal segment and stripping of medial pterygoid muscle on the proximal segment on affected side in mandibular asymmetry patients treated with BSSRO...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27832719/changes-in-posterior-airway-space-and-hyoid-bone-position-after-surgical-mandibular-advancement
#14
Anni Riepponen, Riitta Myllykangas, Jarno Savolainen, Pauli Kilpeläinen, Jari Kellokoski, Riitta Pahkala
OBJECTIVE: To evaluate cephalometric changes in posterior airway space (PAS) and in hyoid bone distance to mandibular plane (MP) 1-3 years after bilateral sagittal split osteotomy (BSSO). MATERIAL AND METHODS: The sample consisted of 36 females and 16 males who underwent mandibular advancement by BSSO. To observe sagittal changes in PAS and in hyoid bone distance to MP both pre- and postoperative cephalograms were analyzed using WinCeph(®) 8.0 software. For the statistical analyses paired T-test and multivariate logistic regression models were used...
November 10, 2016: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/27830486/three-patterns-of-acetabular-deficiency-are-common-in-young-adult-patients-with-acetabular-dysplasia
#15
Jeffrey J Nepple, Joel Wells, James R Ross, Asheesh Bedi, Perry L Schoenecker, John C Clohisy
BACKGROUND: Detailed recognition of the three-dimensional (3-D) deformity in acetabular dysplasia is important to help guide correction at the time of reorientation during periacetabular osteotomy (PAO). Common plain radiographic parameters of acetabular dysplasia are limited in their ability to characterize acetabular deficiency precisely. The 3-D characterization of such deficiencies with low-dose CT may allow for more precise characterization. QUESTIONS/PURPOSES: The purposes of this study were (1) to determine the variability in 3-D acetabular deficiency in acetabular dysplasia; (2) to define subtypes of acetabular dysplasia based on 3-D morphology; (3) to determine the correlation of plain radiographic parameters with 3-D morphology; and (4) to determine the association of acetabular dysplasia subtype with patient clinical characteristics including sex, range of motion, and femoral version...
November 9, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27825939/location-of-the-ankle-center-for-total-knee-arthroplasty
#16
Shigeki Asada, Shigeshi Mori, Shinji Inoue, Ichiroh Tsukamoto, Masao Akagi
BACKGROUND: The purpose of this study was to investigate the ankle center position as determined from the malleoli for total knee arthroplasty (TKA). METHODS: We retrospectively analyzed computed tomography data from 102 patients with osteoarthritic knees. The tibial anteroposterior (AP) axis and transmalleolar axis (TMA) were used as rotational reference axes of the knee and ankle joint, respectively. With these axes, we regarded the offset distance from the intermalleolar midpoint as the position of the ankle center and investigated any angular osteotomy errors on the proximal tibia when the ankle center was assumed to the intermalleolar midpoint...
November 5, 2016: Knee
https://www.readbyqxmd.com/read/27807114/long-term-outcome-of-step-cut-ulnar-shortening-osteotomy-for-ulnar-impaction-syndrome
#17
Loukia K Papatheodorou, Mark E Baratz, Sofia Bougioukli, Tyler Ruby, Robert W Weiser, Dean G Sotereanos
BACKGROUND: Extra-articular ulnar shortening osteotomy is a common procedure for the surgical treatment of ulnar impaction syndrome. Several techniques for this osteotomy have been developed to avoid the morbidity associated with a standard transverse osteotomy. However, these techniques require special instrumentation and are expensive. The purpose of this study was to evaluate the outcome of step-cut ulnar shortening osteotomy without special jigs for ulnar impaction syndrome. METHODS: A retrospective study of 164 consecutive patients who underwent step-cut ulnar shortening osteotomy between 2000 and 2010 was performed...
November 2, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27791241/comparison-of-femoral-head-translation-following-eccentric-rotational-acetabular-osteotomy-and-rotational-acetabular-osteotomy
#18
Tohru Irie, Daisuke Takahashi, Tsuyoshi Asano, Ryuta Arai, Takuya Konno, Tomohiro Onodera, Eiji Kondo, Norimasa Iwasaki
PURPOSE: Eccentric rotational acetabular osteotomy (ERAO) is a modification of rotational acetabular osteotomy (RAO); it has been reported that ERAO allows the femoral head to translate medially and distally. However, no study has compared femoral head translation following RAO or ERAO. The purpose of this study was to compare immediate postoperative translation of the femoral head after RAO and ERAO in comparison with the preoperative position by radiological methods. METHODS: Patients treated by RAO or ERAO between 2006 and 2014 were retrospectively evaluated...
October 26, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27783201/comparison-of-rotational-acetabular-osteotomy-performed-with-navigation-by-surgeons-with-different-levels-of-experience-of-osteotomies
#19
Masaki Takao, Takashi Nishii, Takashi Sakai, Nobuhiko Sugano
PURPOSE: Rotational acetabular osteotomy (RAO) is used to treat developmental hip dysplasia (DDH). It requires detailed anatomical knowledge of the pelvic anatomy and three-dimensional cognitive skills. We addressed whether a computer navigation system combined with a preoperative computed tomography-based plan enabled surgeons to perform RAO safely and reliably through a mini-incision regardless of their level of experience with performing osteotomies. METHODS: We enrolled 24 patients (25 hips) with DDH (radiographic grade 0 or 1 osteoarthritic changes: Tönnis classification)...
October 25, 2016: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27776050/tibial-rotation-osteotomies-in-a-matched-cohort-of-myelodysplasia-and-cerebral-palsy-children
#20
Peter J Stasikelis, Aaron T Creek, Linda I Wack
BACKGROUND: The purpose of this study is to examine the frequency of complications in children with myelodysplasia (MD) undergoing tibial rotational osteotomies with a matched cohort of children with cerebral palsy (CP). It was postulated that because of the unique health issues facing children with MD more complications would be observed. METHODS: A retrospective chart review was performed to identify children with MD who underwent primary tibial rotational osteotomy between 1997 and 2012 and had a minimum 2-year follow-up...
October 21, 2016: Journal of Pediatric Orthopedics
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