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Eur Radiol 2021 Mar 12. Epub 2021 Mar 12.

Radiology, Balgrist University Hospital, Forchstrasse 340, 8008, Zurich, Switzerland.

Objectives: To compare ultra-low-dose CT (ULD-CT) of the osseous pelvis with tin filtration to standard clinical CT (CT), and to assess the quality of computed virtual pelvic radiographs (VRs).

Methods: CT protocols were optimized in a phantom and three pelvic cadavers. Thirty prospectively included patients received both standard CT (automated tube voltage selection and current modulation) and tin-filtered ULD-CT of the pelvis (Sn140kV/50mAs). Read More

J Orthop Sci 2021 Mar 8. Epub 2021 Mar 8.

Department of Orthopedic Surgery, Nara Medical University, Kashihara, Nara, 634-8522, Japan.

Background: Reduction using ligamentotaxis may not be effective enough to treat impacted intraarticular fragments of distal radius fractures. Articular incongruence resulting from the loss of reduction is a risk factor for postoperative osteoarthritis and worse clinical outcome. This study aimed to analyze the radiographic characterization of the impacted intraarticular fragments of distal radius fractures using two/three-dimensional computed tomography (CT). Read More

Clin Spine Surg 2021 Mar;34(2):E72-E79

Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL.

Study Design: Retrospective cohort study at a single institution.

Objective: To examine the effect of symptom duration on clinical outcomes after posterolateral lumbar fusion.

Summary Of Background Data: Nonoperative measures are generally exhausted before patients are indicated for surgical intervention, leaving patients with their symptomatology for varying lengths of time. Read More

Orthop Traumatol Surg Res 2020 Dec 28:102801. Epub 2020 Dec 28.

Surgery Department Research Registrar, IDIBAPS, University of Barcelona, c/ Rosselló, 149-153, 08036 Barcelona, Spain.

Introduction: When treating a distal radius fracture with a volar locking plate (VLP), numerous plate-screw designs are available. To date, there is not a screw fastening system with a clear superiority among the others. Hypotesis: Fixed-angle screws are superior to polyaxial screws in distal radius VLP fixation with respect to screw protrusion and reduction preservation. Read More

Orthopedics 2020 Dec 14:1-7. Epub 2020 Dec 14.

Malunion after distal radius fracture is common in older patients; however, whether patient-perceived outcomes are influenced by radiologic outcome is controversial. This study evaluated patient-perceived outcomes according to radiologic parameters in older patients who underwent nonoperative treatment. The records of 167 patients older than 55 years who had a distal radius fracture were reviewed. Read More

Oral Radiol 2020 Nov 19. Epub 2020 Nov 19.

Unit of Oral Medicine, Pathology and Surgery, Section of Clinical Dentistry, Department of Neurosciences, University of Padova, Via Giustiniani, 1, 35128, Padova, Italy.

Objectives: This study aimed to assess the prevalence of incidental findings, not strictly related to dentistry, viewed with panoramic radiography.

Methods: Panoramic radiographs performed between December 2013 and June 2016 were retrospectively collected. These images were analyzed, searching for incidental findings. Read More

Med Sci Monit 2020 Nov 5;26:e927370. Epub 2020 Nov 5.

Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland).

BACKGROUND The surgical strategies for posterolateral tibial plateau fractures are still inconsistent. Although a number of operative approaches were previously reported for surgical treatment of fractures of the posterolateral column in the tibial plateau, some approaches fail to provide direct visualization of the articular surface and do not allow enough space to access the posterolateral area of the lateral tibial plateau, thereby leading to unsatisfactory reconstruction of the knee and poor articular activity. MATERIAL AND METHODS We retrospectively reviewed records of 21 patients who underwent fibular neck osteotomy approach for posterolateral fractures. Read More

J Clin Med 2020 Oct 20;9(10). Epub 2020 Oct 20.

Department of Operative Dentistry, Endodontology and Periodontology, School of Dentistry, Matsumoto Dental University, Shiojiri 399-0781, Japan.

Objective: To evaluate the association between alveolar bone loss (ABL) detected on panoramic radiographs and carotid artery calcification (CAC) detected on computed tomography (CT).

Methods: The study subjects included 295 patients (mean age ± SD: 64.6 ± 11. Read More

NMC Case Rep J 2020 Sep 15;7(4):167-171. Epub 2020 Sep 15.

Department of Orthopedics, Tokushima University Graduate School, Tokushima, Tokushima, Japan.

The patient was a 48-year-old female recreational triathlete who had been experiencing mild low back pain since high school. She had recently developed right leg pain and had gradually worsening difficulty in running. She preferred to undergo spinal surgery without fusion so that she could return to triathlons as soon as possible, and she was referred to our hospital. Read More

Arch Osteoporos 2020 08 5;15(1):122. Epub 2020 Aug 5.

Department of Orthopaedic Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29 Saemunan-ro, Jongno-gu, Seoul, 03181, Republic of Korea.

Beta values of the intertrochanteric fracture group were about twice as high as those of the femoral neck fracture group. These results can be used to increase the awareness of proximal hip fracture among physicians and improve treatments and outcomes.

Purpose: To compare the BMD of the femoral neck region and the intertrochanteric region between the femoral neck fracture group and the intertrochanteric fracture group. Read More

Clin Orthop Relat Res 2020 Aug;478(8):1922-1935

Y. Kumabe, T. Fukui, S. Takahara, Y. Kuroiwa, M. Arakura, K. Oe, T. Oda, K. Sawauchi, T. Matsushita, T. Matsumoto, S. Hayashi, R. Kuroda, T. Niikura, Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.

Background: Distraction osteogenesis has been broadly used to treat various structural bone deformities and defects. However, prolonged healing time remains a major problem. Various approaches including the use of low-intensity pulsed ultrasound, parathyroid hormone, and bone morphogenetic proteins (BMPs) have been studied to shorten the treatment period with limited success. Read More

J Pediatr Orthop 2020 Oct;40(9):e788-e793

The Children's Hospital of Philadelphia, Philadelphia, PA.

Introduction: One of the primary goals of scoliosis surgery is to balance the head over the pelvis (or avoid creating imbalance). Historically, a normal coronal balance was defined as the C7 plumb line (C7PL) within 2 cm of the central sacral vertical line (CSVL); however, there is limited published information regarding the speed/magnitude and success/failure of balancing, rebalancing, or unbalancing in the postoperative period. The purpose of this study is to classify and quantify coronal plane balance postoperatively in adolescent idiopathic scoliosis when using pedicle screw instrumentation. Read More

Clin Spine Surg 2020 Jul 10. Epub 2020 Jul 10.

Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL.

Study Design: Retrospective cohort study at a single institution.

Objective: To examine the effect of symptom duration on clinical outcomes after posterolateral lumbar fusion.

Summary Of Background Data: Nonoperative measures are generally exhausted before patients are indicated for surgical intervention, leaving patients with their symptomatology for varying lengths of time. Read More

Technol Health Care 2021 ;29(1):167-174

Department of Orthopedics, Tongji Hospital, Tongji University, Shanghai, China.

Background: The volar locking plate technique with an L-shaped incision of the PQ muscle through the classic volar Henry approach is a popular method for treating distal radius fractures. Recently we revised and improved this traditional technique by performing mini-invasive surgery.

Objective: The purpose of this study was to evaluate the clinical effects after fixation of distal radius fracture with volar locking palmar plates while preserving the pronator quadratus through minimally invasive approach. Read More

Oral Surg Oral Med Oral Pathol Oral Radiol 2020 Jul 1;130(1):10-17. Epub 2020 May 1.

Department of Maxillofacial Surgery, Massachusetts General Hospital, Boston, MA, USA.

Objective: The aim of this study was to answer the following clinical question: "In patients admitted to a tertiary care hospital with a diagnosis of brain abscess, how common is odontogenic etiology?"

Study Design: We designed a retrospective study of patients with brain abscesses diagnosed at the Massachusetts General Hospital between 1980 and 2017. Inclusion criteria were complete medical records outlining clinical course, relevant dental history, and radiographic and microbiologic data.

Results: Of 167 intracranial abscesses, 88 (52. Read More

Orthopedics 2020 May 20;43(3):161-167. Epub 2020 Mar 20.

A retrospective case-control study was conducted at a level I trauma center to assess whether radiographic details of tibial plateau fixation can predict symptomatic implant removal. Nine hundred fifty-one tibial plateau fractures were treated with open reduction and internal fixation from 2007 to 2016. Eighty-two (9%) were treated with implant removal for localized pain over the implant. Read More

Int Orthop 2020 03 22;44(3):511-518. Epub 2020 Jan 22.

Department of Pediatric Orthopaedics, GuangZhou Women and Children's Medical Center, GuangZhou Medical University, 9th JinSui Road, GuangZhou, 510623, China.

Purpose: This study aims to evaluate (1) the probability to achieve normal pelvic radiographs in children with developmental dysplasia of the hip (DDH) treated by closed reduction and (2) the amount of time needed to achieve normal pelvic radiographs and to assess what factors influence both probability and time to achieve normal radiographic parameters following CR and spica cast immobilization for DDH.

Methods: We retrospectively reviewed 436 patients (393 girls, 43 boys; 507 hips) with DDH treated by closed reduction (CR). Tönnis grade, AVN, acetabular index (AI), centre-edge angle (CEA), and Severin radiographic grade were evaluated on plain radiographs. Read More

Knee 2020 Mar 15;27(2):543-551. Epub 2020 Jan 15.

Department of Orthopedics and Traumatology, Hospital Clínico Universitario Virgen de la Arrixaca, Ctra. Madrid-Cartagena, s/n, 30120 El Palmar, Murcia, Spain; Faculty of Medicine, University of Murcia, Campus de Espinardo, Calle Campus Universitario, s/n, 30100, Murcia, Spain.

Background: The aim of the study was to determine any discrepancies among preoperative full-leg standing radiographs (LLR) and supine non-weight-bearing computed tomography (CT)-scan-based three-dimensional (3D) models in the assessment of the lower limb alignment prior to total knee arthroplasty (TKA) and answer the question of whether the LLR study can be obviated in preoperative planning when TKA is performed with patient-specific instrumentation (PSI).

Methods: LLR and CT-scan-based 3D models of 227 knees (183 patients) were measured. LLR data was then compared to 3D alignment data used to design the PSI for TKA surgery. Read More

J Craniovertebr Junction Spine 2019 Jul-Sep;10(3):167-171

Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India.

Background: Most of the literature on role of spinopelvic parameters in various lumbar spine pathologies has been based on studies done on Caucasian population.

Aims And Objectives: The present study attempts to establish a database of measurements of the sagittal profile of spine in asymptomatic Indian population and their comparison with subjects having various lumbar spine pathologies.

Materials And Methods: We performed a prospective case control study at All India Institute of Medical Sciences, New Delhi in which we enrolled 109 patients and 22 healthy asymptomatic subjects in 2 years from 2015 to 2017. Read More

J Pediatr Orthop B 2020 Jan;29(1):22-28

Tuckahoe Orthopaedic Associates, Richmond, Virginia, USA.

The objective of this study is to present the clinical and radiographic data collected from patients who were treated with a varus derotational osteotomy using Rush rod fixation and compare this to published norms of outcomes using blade plate fixation. A retrospective chart and radiograph review was conducted after identifying 44 patients with 61 hips who underwent varus derotational osteotomy with Rush rod fixation at our institution between 2006 and 2016. We identified 44 patients with 61 hips who underwent the procedure. Read More

Acta Inform Med 2019 Sep;27(3):167-170

Department of Oral and Maxillofacial Radiology, University of Texas Health Science Center San Antonio, Texas, USA.

Introduction: Fractal dimension (FD) on periapical radiographs is used as a simple descriptor of the complex architecture of the trabecular bone surrounding the dentition. It is used on periapical and panoramic radiographs as a descriptor of the complex architecture of trabecular bone surrounding teeth.

Aim: The aim of this study was to evaluate the effect of image resolution and different compression levels on fractal dimension of alveolar bone with images obtained using storage phosphor plate (SPP) system. Read More

J Hand Surg Eur Vol 2020 Feb 13;45(2):167-172. Epub 2019 Nov 13.

Department of Hand Surgery, Helsinki University Hospital, Helsinki, Finland.

This retrospective study analysed the results of total trapeziectomy with RegJoint™ interposition in 38 osteoarthritic hands in 34 patients. Patients were evaluated preoperatively, at follow-up visits, and at a mean final follow-up of 33 months (range 20-53) with plain radiographs, computed tomography, as well as with subjective and objective evaluations. Pain decreased and subjective outcomes and function improved significantly. Read More

Br J Oral Maxillofac Surg 2019 12 7;57(10):1009-1013. Epub 2019 Sep 7.

Department of Oral & Maxillofacial Surgery King Edward Medical University/Mayo Hospital Lahore, Punjab, Pakistan. Electronic address:

Morbidity and mortality among children is usually the result of trauma. Because a child's face is retruded relative to the protecting skull, has a thicker layer of adipose tissue, more elastic bones, flexible sutures lines, the presence of tooth buds within the jaws, and the lack of pneumatisation of the sinuses, the facial bones fracture less commonly than in adults. Our aim was to assess the patterns of such fractures in children who presented to the department of Oral and Maxillofacial Surgery, King Edward Medical University/Mayo Hospital Lahore, Pakistan. Read More

Hip Int 2020 Mar 21;30(2):167-175. Epub 2019 Aug 21.

Anca Medical Centre, Ghent, Belgium.

Introduction: Hip resurfacing (HRA) requires a new standardised radiographic evaluation protocol. Evaluation of acetabular components is similar to total hip arthroplasty (THA) but femoral components require different criteria. This study evaluates the efficacy of a new femoral zonal system for radiographic HRA assessment in identifying clinical problems. Read More

J Periodontol 2020 02 2;91(2):183-193. Epub 2019 Aug 2.

Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.

Background: The purpose of this study was to compare the survival rates of implants placed following 1-stage or 2-stage maxillary sinus floor augmentation by the lateral window technique (SFALW) performed on residual bone of <4 mm.

Methods: This study was conducted based on dental records and radiographs obtained from patients who received SFALW from March 2006 to June 2014, being followed up between March 2006 and December 2017. They were divided into 1-stage and 2-stage groups according to the SFALW performed. Read More

Radiother Oncol 2019 11 11;140:167-174. Epub 2019 Jul 11.

Stanford University, Department of Radiation Oncology, Stanford, USA. Electronic address:

Background And Purpose: To investigate a novel markerless prostate localization strategy using a pre-trained deep learning model to interpret routine projection kilovoltage (kV) X-ray images in image-guided radiation therapy (IGRT).

Materials And Methods: We developed a personalized region-based convolutional neural network to localize the prostate treatment target without implanted fiducials. To train the deep neural network (DNN), we used the patient's planning computed tomography (pCT) images with pre-delineated prostate target to generate a large amount of synthetic kV projection X-ray images in the geometry of onboard imager (OBI) system. Read More

J Child Orthop 2019 Apr;13(2):167-171

The Hospital for Sick Children, Toronto, Ontario, Canada.

Purpose: The ability to monitor and study developmental dysplasia of the hip (DDH) requires validated radiographic outcome measures. The sourcil method of acetabular index measurement (AI-S) has not yet been shown to be a reliable measure of acetabular dysplasia in a DDH population, despite its widespread use. The aims of this study were to test the reliability of the AI-S method in a DDH population, and to compare the reliability of the AI-S method with that of the classic lateral edge method (AI-L). Read More

J Clin Pediatr Dent 2019 9;43(3):167-172. Epub 2019 Apr 9.

To assess the effect of three behavior guidance techniques on anxiety indicators of children undergoing diagnosis and preventive dental care. Sixty-three subjects (7-9 years) were divided into three groups as per the behavior guidance technique namely tell-show-do, live and filmed modeling (using Tablet Computer) to receive diagnostic (Oral examination & radiographic assessment using intraoral periapical radiographs) and preventive dental care (Oral prophylaxis and topical fluoride application). Anxiety indicators-Facial Image Scale (FIS) scores and heart rate were recorded before, during and after diagnosis/preventive treatment. Read More

Eur Spine J 2019 Sep 22;28(9):1906-1913. Epub 2019 Mar 22.

Department of Orthopedic Surgery, Veterans Health Service Medical Center, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, 05368, Republic of Korea.

Purpose: This study aimed to obtain reference values of lumbar lordosis (LL) and lower LL (LLL) from normal asymptomatic groups, determine the relationship between them and pelvic incidence (PI), and establish the predictive formula for ideal LLL in the elderly Korean population.

Methods: Standing plain lateral radiographs of the whole spine, including the pelvis, were analyzed in asymptomatic adult male volunteers without back pain or prior surgery involving the spine or lower extremity. Volunteers with scoliosis, spondylolisthesis, segmental disk space narrowing, and/or compression fractures in the radiographs were excluded. Read More

J Contemp Dent Pract 2018 Nov 1;19(11):1381-1385. Epub 2018 Nov 1.

Department of Orthodontics, DJ Dental College, Modinagar, Ghaziabad, Uttar Pradesh, India.

Aim: The accurate placement of implants in mandible requires consideration for angulations of the bone along with the vertical dimensions. The aim of this present study was to assess the variation of mandibular anatomy using computed tomography (CT) radiography and to evaluate the effect of presence and absence of teeth on the mandibular anatomy before planning an implant surgery.

Materials And Methods: The present population-based retrospective study was conducted using 167 digital CT scan images those selected from departmental archives. Read More