Search Our Scientific Publications & Authors

Oper Neurosurg (Hagerstown) 2022 Jul 20;23(1):e72-e76. Epub 2022 Apr 20.

The Orthopedic Hospital, The First Affiliated Hospital of Nanchang University, Jiangxi, China.

Background And Importance: Spinal osteotomy and total hip replacement (THR) are the most common surgical interventions for ankylosing spondylitis (AS). It is recommended that patients with AS with severe thoracolumbar kyphotic deformity (TLKD) and flexed hips receive spinal osteotomy before THR to reduce the risk of hip prosthesis dislocation after THR. Standardly, spinal osteotomy is performed in the prone position; however, it is impractical to place patients with AS with kyphosis and closed hips in a prone position. Read More

Eur J Radiol 2022 Jun 1;154:110343. Epub 2022 Jun 1.

Radiology Unit, "Casa Sollievo della Sofferenza" Hospital, San Giovanni Rotondo, Italy; Radiology Unit "Dimiccoli" Teaching Hospital, Barletta, Italy; Department of Clinical and Experimental Medicine, Foggia University School of Medicine, Italy. Electronic address:

Spine trauma is an ominous event with a high morbidity, frequent mortality, and significant psychological, social, and financial consequences for patients, their relatives and society. On average three out of four spinal fractures involve the thoracolumbar spine and up to one-third are complicated by spinal cord injury. Spinal cord injuries (SCI) are a significant cause of disability in US and in all western countries. Read More

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2022 Jun;36(6):739-744

Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China.

Objective: To introduce a new occipitocervical angle parameter, occipito-odontoid angle (O-Da), for predicting dysphagia after occipitocervical fusion (OCF) in patients with C Klippel-Feil syndrome (KFS) and analyze its effectiveness.

Methods: A total of 119 patients met selective criteria between April 2010 and November 2019 were retrospectively included as the study subjects. There were 56 males and 63 females. Read More

Zhonghua Wai Ke Za Zhi 2022 Jun;60(6):558-566

Department of Orthopaedics, the 909th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, the Affiliated Southeast Hospital of Xiamen University,Orthopaedic Center of People's Liberation Army, Zhangzhou 363000, China.

To explore the effect of atlantoaxial fusion on the growth and development of children's cervical spine. The clinical data of 12 children with atlantoaxial dislocation who underwent posterior atlantoaxial fusion at Department of Orthopaedics,the 909th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army from June 2002 to September 2013 were retrospective analyzed. There were 7 males and 5 females,with age of (8. Read More

Acta Orthop 2022 May 23;93:472-477. Epub 2022 May 23.

Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital, Stockholm; Department of Pediatric Orthopedics, Astrid Lindgren's Children Hospital, Karolinska University Hospital, Stockholm.

Background And Purpose: Few reports have described the panorama of orthopedic surgeries that children with cerebral palsy (CP) undergo. We analyzed the risk of a first surgery, and describe the frequency of orthopedic surgeries in terms of age, sex, anatomical location, and Gross Motor Function Classification System (GMFCS) level in children and young adults with CP.

Patients And Methods: This was a register-based cohort study of 3,305 individuals followed until 2-25 years of age. Read More

J Arthroplasty 2022 May 20. Epub 2022 May 20.

Department of Orthopaedic Surgery, Stanford University Medical Center, Palo Alto, CA.

Background: Excessive standing posterior pelvic tilt (PT), lumbar spine stiffness, low pelvic incidence (PI), and severe sagittal spinal deformity (SSD) have been linked to increased dislocation rates. We aimed to determine the prevalence of these 4 parameters in a cohort of unstable total hip arthroplasty (THA) patients and compare these to a large representative control population of primary THA patients.

Methods: Forty-eight patients with instability following primary THA were compared to a control cohort of 9414 THA patients. Read More

J Radiol Case Rep 2022 Feb 1;16(2):21-38. Epub 2022 Feb 1.

Institute for Spinal Health & Performance, Cumming, GA, USA.

Objective: Discuss non-surgical spinal rehabilitation for a 27-year-old male with thoracic and lumbosacral spondylolistheses. A selective literature review and discussion are provided.

Clinical Features: A 27-year-old male presented with severe, 8/10 mid and low back pain. Read More

JBJS Rev 2022 05 1;10(5). Epub 2022 May 1.

Department of Orthopaedic Surgery, Warren Alpert Medical School of Brown University, Providence, Rhode Island.

»: Flexion-distraction, axial loading, and rotational forces can cause various degrees of osseoligamentous disruption of the cervical spine, leading to traumatic cervical facet fractures and dislocations.

»: Low-energy forces lead to minimally displaced facet fractures that often can be treated with immobilization only. High-energy forces are more likely to cause unstable injuries with or without neurologic compromise, which may require surgical intervention. Read More

Zhongguo Gu Shang 2022 May;35(5):495-9

Department of Spinal Surgery, China-Japan Friendship Hospital, Beijing 100029, China.

Atlantoaxial dislocation (AAD) is a kind of life-threatening atlantoaxial structural instability and a series of neurological dysfunction caused by common multidisciplinary diseases. The operation risk is extremely high because it is adjacent to the medulla oblongata and the location is deep. With the increase of the number of operations in the upper cervical region, postoperative complications such as failure of internal fixation, non fusion of bone graft and poor prognosis gradually increase. Read More

Brain Dev 2022 May 5. Epub 2022 May 5.

Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.

Introduction: Bicaudal D homolog 2 (BICD2) is a causative gene of autosomal-dominant lower extremity-predominant spinal muscular atrophy-2 (SMA-LED2). The severity of SMA-LED2 varies widely, ranging from cases in which patients are able to walk to cases in which severe joint contractures lead to respiratory failure. In this study, we report the long-term course of a case of SMA-LED2 in comparison with previous reports. Read More

Orthop Surg 2022 Jun 7;14(6):1135-1142. Epub 2022 May 7.

Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China.

Objective: To evaluate the safety and efficacy of cervical pedicle screw (CPS) placement with O-arm navigation in the treatment of lower cervical fracture-dislocation.

Methods: A retrospective clinical study was performed involving 42 consecutive patients with lower cervical spine fracture-dislocation who underwent CPS fixation surgery with O-arm navigation (CPS group) or received conventional lateral mass screw (LMS) fixation surgery (LMS group) between August 2015 and August 2019. Accuracy of CPS position was evaluated by postoperative CT. Read More

BMC Musculoskelet Disord 2022 May 2;23(1):412. Epub 2022 May 2.

Department of Orthopaedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kitaku Kita-15 Nishi-7, Sapporo, Hokkaido, 060-8638, Japan.

Background: There have been no prior reports of real-time detailed records leading to complete quadriplegia immediately after fracture dislocation in high-energy trauma. Here, we report a case of cervical dislocation in which the deterioration to complete motor paralysis (modified Frankel B1) and complete recovery (Frankel E) could be monitored in real time after reduction in the hyperacute phase.

Case Presentation: A 65-year-old man was involved in a car accident and sustained a dislocation at the C5/6 level (Allen-Ferguson classification: distractive flexion injury stage IV). Read More

BMC Musculoskelet Disord 2022 Apr 25;23(1):385. Epub 2022 Apr 25.

Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390-8883, USA.

Purpose: Acetabular dysplasia (AD) is a debilitating condition which results in impaired hip function, leading to hip-spine syndrome with anomalies identifiable on plain radiographs. However, no study to date has investigated the association between radiographic spine anomalies and functional outcomes in AD. We hypothesize that AD patients with radiographic evidence of lumbar spine anomalies are associated with decreased function in comparison to those without such radiographic findings. Read More

J Spine Surg 2022 Mar;8(1):76-83

Department of Orthopaedic Surgery, Spine Division, Tan Tock Seng Hospital, Singapore.

We report a unique case of a patient who sustained an intradural disc herniation from a left C5-6 unilateral facet dislocation after a fall. This was not easily identified on pre-operative imaging. We explain the details of our surgical approach in this case report. Read More

Global Spine J 2022 Apr;12(2_suppl):27S-33S

Atrium Health Musculoskeletal Institute, Charlotte, NC, USA.

Study Design: This is a technique paper describing minimally invasive, navigated, percutaneous pedicle screw fixation of the cervical spine. In addition, we include a retrospective feasibility analysis of our initial experience with 27 patients undergoing this procedure.

Objective: The purpose of this study is to describe the technique of MIS navigated percutaneous cervical pedicle screw instrumentation and to report our initial experience. Read More

World Neurosurg 2022 Jul 18;163:e98-e105. Epub 2022 Mar 18.

Department of Neurosurgery, Chinese PLA General Hospital, Beijing, China. Electronic address:

Objective: Basilar invagination usually shows a decrease of clivus axis angle (CAA), which could give rise to progressive neural compression. Exploring a safe and effective fixation technique to achieve atlantoaxial stability and neural decompression remains necessary. In this study, we introduce a modified posterior C1-C2 distraction and fixation technique by which we obtained indirect ventral neural decompression and atlantoaxial stability in a series of patients with decreased CAA. Read More

World Neurosurg 2022 Jun 18;162:e568-e579. Epub 2022 Mar 18.

Department of neurosurgery, Sklifosovsky Research Institute for Emergency Medicine, Moscow, Russia; Department of neurosurgery, Evdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia.

Objective: The objectives of this study were to conduct a systematic review of the literature to determine the optimal treatment method for patients with atlanto-occipital dislocation (AOD) and to identify possible factors influencing their outcomes.

Methods: We conducted a systematic review of the PubMed database between January 1966 and December 2020. The main inclusion criterion was articles that discussed AOD treatment methods, and outcome descriptions were selected for analysis. Read More

J Pediatr Orthop 2022 Jul 17;42(6):e607-e611. Epub 2022 Mar 17.

Department of Orthopaedic Surgery, Saint Louis University, St. Louis, MO.

Background: Adult studies have demonstrated the efficacy of written protocols for clearance of the cervical spine. However, less than half of recently surveyed pediatric trauma centers report using a documented protocol. Little data exists on such protocols in pediatric populations, but interest remains because of potential reductions in radiation exposure, time to clearance, hospital stay, and specialist referral. Read More

BMC Musculoskelet Disord 2022 Mar 16;23(1):257. Epub 2022 Mar 16.

Department of Orthopedics, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, 69118, Heidelberg, Germany.

Background: Several interventions are established for treating patellofemoral instability in adults. Fewer exist for pediatric patients without damaging the epiphysis. The Ali Krogius (AK) method is currently still being used. Read More

Int J Spine Surg 2022 Apr 10;16(2):256-263. Epub 2022 Mar 10.

Spinal Unit/ Unidade Vertebro-Medular (UVM), Department of Orthopaedics, Centro Hospitalar Universitário do Porto, Porto, Portugal

Background: Cervical facet dislocations are among the most common traumatic spinal injuries. The management of this type of lesions is still controversial. The objective of the present study was to analyze the results of subaxial cervical facet dislocations submitted to an isolated anterior cervical discectomy and fusion (ACDF) after attempted closed reduction with cranial traction and to identify risk factors for treatment failure. Read More

World Neurosurg 2022 May 3;161:147-148. Epub 2022 Mar 3.

Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India.

A 32-year-old woman presented with chronically progressive spastic quadriparesis. Detailed clinicoradiological evaluation led to the diagnosis of irreducible atlantoaxial dislocation and basilar invagination, with associated "kissing" carotids and an anomalous right vertebral artery (VA). Both internal carotid arteries had an abnormally tortuous course, "kissing" retropharyngeally at the level of C1-C2. Read More

Acta Med Okayama 2022 Feb;76(1):71-78

Department of Orthopaedic Surgery, Okayama University Hospital.

The surgical treatment of pediatric atlantoaxial subluxation (AAS) in Down syndrome (DS) remains technically challenging due to radiation exposure and complications such as vertebral artery injury and nonunion. The established treatment is fixation with a C1 lateral mass screw and C2 pedicle screw (modified Goel technique). However, this technique requires fluoroscopy for C1 screw insertion. Read More

J Pediatr Orthop 2022 May-Jun 01;42(5):e507-e514

Division of Orthopaedic Surgery.

Background: Osteogenesis imperfecta (OI) is a heritable disease characterized by bone fragility and other extra skeletal manifestations. Most patients with OI have mutations in the COL1A1 or COL1A2 genes. However, a significant minority of patients with clinical OI have non-COL1A1/2 mutations, which have become easier to detect with the use of genetic panels. Read More

Ann Med Surg (Lond) 2022 Mar 11;75:103372. Epub 2022 Feb 11.

Department of Neurosurgery, King Hussein Cancer Center, Amman, 11941, Jordan.

Introduction: and importance: Larsen syndrome is a rare genetic disorder that is characterized by multiple joint dislocations, flat faces that can also be referred to as "dish face", kyphoscoliosis, and anomalies of the vertebrae. Patients with this syndrome frequently develop various spinal deformities, one of them being kyphosis of the cervical spine. This deformity can lead to serious health manifestations if not surgically treated. Read More

Spine (Phila Pa 1976) 2022 06 22;47(11):817-824. Epub 2022 Feb 22.

Department of Maxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People's Republic of China.

Study Design: Observational and morphological study with three-dimensional (3D) computed tomography (CT) analysis.

Objective: To discover the morphology and configuration deformities of craniovertebral junction (CVJ) and upper cervical spine in children with unilateral hemifacial microsomia (HFM). To determine whether there are specific HFM patients who are at higher risk of certain cervical vertebral anomaly. Read More

JBJS Case Connect 2022 02 16;12(1). Epub 2022 Feb 16.

Kothari Medical Centre, Kolkata, India.

Case: A 45-year-old man presented with posttraumatic fracture-dislocation of T11/12 with neurological level T8 AIS A. Sensory level progressed to T4 in the next day morning. He underwent T10, T11, T12, and L1 percutaneous pedicle screw-rod fixation. Read More

J Pediatr Orthop 2022 May-Jun 01;42(5):273-279

Departments of Orthopaedic Surgery.

Background: A subset of patients with spinal muscular atrophy (SMA) develop hip pain. We analyzed (1) the characteristics of hip pain in patients with SMA (prevalence, intensity, interference with activities, and responsiveness to treatment) and (2) factors (patient, clinical, and radiographic) associated with moderate to severe pain.

Methods: We performed a retrospective record review and telephone survey of 104 patients with SMA (77% response rate; 44% female; mean age, 22±13 y) who presented for treatment between 2010 and 2020. Read More

Cureus 2022 Jan 3;14(1):e20915. Epub 2022 Jan 3.

Neurosurgery Department, Hospital Central do Funchal, Serviço de Saúde da Região Autónoma da Madeira, Entidade Pública Empresarial da Região Autónoma da Madeira, Funchal, PRT.

Skimboarding is a sport that combines elements from aquatic and terrestrial sports and has gained popularity with increased riskier maneuvers. Spinal cord injuries associated with this sport have rarely been reported. Here we present a case of a previously healthy 44-year-old male with a life-threatening C2/C3 fracture and dislocation after a skimboarding fall. Read More

J Am Acad Orthop Surg 2022 Apr;30(7):e628-e639

From the Department of Orthopaedic Surgery, Rothman Orthopaedic Institute, Philadelphia, PA.

Introduction: Lumbar spinal fusion (LSF) may increase the risk of dislocation in patients who have undergone total hip arthroplasty (THA), especially when the LSF was done before the THA. Most publications evaluated patients who had undergone THA using a posterior approach to the hip, yet there are little data on the influence of other surgical approaches. The goal of this study was to evaluate the risk of THA dislocation with anterior supine-based surgical approaches to the hip in patients who have undergone surgical management of concurrent hip and spine pathology. Read More

J Neurosci Rural Pract 2022 Jan 7;13(1):155-158. Epub 2022 Jan 7.

Department of Neurosurgery, All India Institute of Medical Sciences, Bhubaneswar, Odisha, India.

Unilateral facet dislocation of subaxial cervical spine trauma is characterized by dislocation of inferior facet of superior vertebra over the superior facet of inferior vertebra. The injury is due to high-velocity trauma and associated with instability of spinal column. Such unilateral facet dislocations occurring at multiple adjacent levels for some reason are not reported or studied frequently. Read More