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Gait Posture 2021 Jun 6;88:198-202. Epub 2021 Jun 6.

Harkness Center for Dance Injuries, NYU Langone Health, 614 2ndAv, Suite G, 2nd Floor, New York, NY 10016, USA. Electronic address:

Background: The spinal biomechanics of dance tasks have received little study and no studies have used a multi-segmented spinal model. Knowledge of how the segments of the spine move may be useful to the dance clinician and dance educator.

Research Question: What is the direction and amount of motion of the primary segments of the spine in elite dancers during an arabesque and a passé?

Methods: This observational study examined 59 elite dancers performing an arabesque and a passé using a three-dimensional motion analysis system with the trunk divided into a series of five segments: pelvis, lower lumbar, upper lumbar, lower thoracic and upper thoracic spine. Read More

Rev Esp Cir Ortop Traumatol 2021 Jul-Aug;65(4):264-271

Servicio de Neurofisiología Clínica, Hospital General Universitari de Castelló, Castelló, Spain.

Objective: To describe iatrogenic lesions of the peripheral nervous system and their relationship with different orthopaedic and traumatological procedures, through their assessment by means of electromyographic study.

Material And Methods: Retrospective descriptive study of the electromyographies performed in the clinical neurophysiology service of the Hospital General Universitari de Castelló between July 2015 and March 2019, recovering those in which the aetiology was diagnosed as iatrogenic in relation to surgical procedures and analysing those that were initiated after orthopaedic and traumatological procedures.

Results: Of the total number of electromyographies reviewed, 1. Read More

PLoS One 2021 9;16(6):e0252385. Epub 2021 Jun 9.

Department for Trauma and Reconstructive Surgery, BG Unfallklinik Tuebingen, Eberhard Karls University Tuebingen, Tuebingen, Germany.

Objective: This study aims to investigate the correlation between spinopelvic parameters in supine position (pelvic incidence (PI), sacral slope (SS), pelvic tilt (PT), lumbar lordosis (LL)), disc degeneration and herniation of the thoracolumbar spine, as well as cardiovascular risk factors and back pain in a southern German cohort from the general population.

Methods: This study is a cross-sectional, case-control study drawn from a prospective cohort of the "Cooperative Health Research in the Region of Augsburg/Kooperative Gesundheitsforschung in der Region Augsburg" study (KORA). In total, 374 participants (mean age 56. Read More

Zhonghua Wai Ke Za Zhi 2021 Jun;59(6):452-457

Department of Spine Surgery,Nanjing Drum Tower Hospital,Medical School of Nanjing University,Nanjing 210008,China.

With the popularization of minimally invasive concept in the treatment of lumbar degenerative disease,minimally invasive lumbar interbody fusion has gradually developed into the mainstream technique of lumbar fixation and fusion.At present,there are many types of minimally invasive lumbar interbody fusion. In this paper, four kinds of minimally invasive lumbar interbody fusion (anterior lumbar interbody fusion,minimally invasive transforaminal lumbar interbody fusion,extreme lateral interbody fusion,oblique lumbar interbody fusion),which are widely used in clinical practice,are systematically described from the aspects of indication selection,technical characteristics, clinical efficacy and prevention of complications. Read More

Spine (Phila Pa 1976) 2021 Jul;46(13):867-873

Department of Orthopedics & Rehabilitation, University of Rochester School of Medicine and Dentistry, Rochester, New York.

Study Design: Retrospective cohort study.

Objective: To evaluate the diagnostic yield of computed tomography (CT) imaging of the axial skeleton in pediatric patients evaluated a level I trauma center.

Summary Of Background Data: CT imaging has become ubiquitous in the assessment of axial skeletal injuries in trauma patients. Read More

Spine (Phila Pa 1976) 2021 Jun 4. Epub 2021 Jun 4.

NYU Langone Health.

Studydesign: Retrospective-comparative; LOE-3.

Objective: The purpose of this study was to investigate what effect, if any, an institutional opioid reduction prescribing policy following 1-or-2-level lumbar fusion has on Hospital-Consumer-Assessment-of-Healthcare-Providers-and-Systems-(HCAHPS)-survey results.

Summary Of Background Data: Prior research has demonstrated that high levels of opioid-prescribing may be related, in part, to a desire to produce superior patient satisfaction. Read More

Medicine (Baltimore) 2021 Jun;100(22):e26174

Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine.

Abstract: Percutaneous vertebroplasty (VP) and kyphoplasty (KP) are well-established minimally invasive surgical procedures for the treatment of osteoporotic vertebral compression fractures (OVCF). However, some drawbacks have been reported regarding these procedures, including height loss, cement leakage, and loss of the restored height after balloon deflation. We performed a novel VP technique to minimize these limitations of conventional procedures. Read More

World Neurosurg 2021 Jun 1. Epub 2021 Jun 1.

Neurosurgery AI Lab & Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA. Electronic address:

Study Design: Retrospective cohort studying using a national, administrative database.

Objective: To determine the postoperative complications and quality outcomes of single and multi-stage surgical management for lumbar degenerative disease (LDD).

Methods: This study identified patients with who underwent surgery for LDD between 2007 - 2016. Read More

Clin Spine Surg 2021 Jun 3. Epub 2021 Jun 3.

Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA Department of Orthopaedic Surgery, Johns Hopkins Hospital, Baltimore, MD.

Summary Of Background: Multiple sclerosis (MS) is a chronic inflammatory disease that can cause physical and neurological dysfunction. Patients with MS are living longer and undergoing more orthopedic procedures, but the risk of patients with MS undergoing posterior lumbar fusion (PLF) has not been studied in literature before.

Objective: This study aims to (1) analyze the rates of postoperative complications of MS patients undergoing primary PLF and (2) analyze the economic burden associated with these surgeries in the MS population compared with patients without MS. Read More

Spine (Phila Pa 1976) 2021 Jun 2. Epub 2021 Jun 2.

Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P. R. China Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P. R. China.

Study Design: Prospective study.

Objective: The aim of this study was to prospectively assess the clinical outcomes of modified MIS-TLIF for the treatment of single-segment lumbar spondylolisthesis.

Summary Of Background Data: MIS-TLIF is a safe and effective procedure in the treatment of lumbar degenerative disease. Read More

Int J Neurosci 2021 Jun 1:1-6. Epub 2021 Jun 1.

Department of Spine Services, Indian Spinal Injuries Centre, Vasant kunj, Sector C, 110070 New Delhi.

Introduction: Intraspinal synovial cysts occurrence causing spinal canal occlusion are mostly seen in mobile segments of the spine (lumbar and cervical). An appearance of the cyst in thoracic spine is a relatively rare occurrence. We present an interesting case of "double crush" caused by Lumbar canal stenosis with a mid-dorsal Facet cyst. Read More

Int J Environ Res Public Health 2021 05 28;18(11). Epub 2021 May 28.

Department of Orthopedics and Trauma Surgery, Medical University of Vienna, 1090 Vienna, Austria.

During the last few decades the prevalence of lumbar disc herniation has been increasing constantly, thereby imposing a significant socioeconomic burden. Physiotherapy plays a crucial role in both surgical and conservative treatment of lumbar disc herniation, consequently the current COVID-19 pandemic with concomitant lockdowns has led to a shortage of physiotherapeutical care. In the light of these recent events publicly available physiotherapy tutorials may be a useful tool to address this problem. Read More

Int J Environ Res Public Health 2021 May 10;18(9). Epub 2021 May 10.

Department of Medicine and Orthopaedic Surgery, Faculty of Medicine, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, C.P., 30100 Murcia, Spain.

The aims of this study were to describe the sagittal integral morphotype (SIM) of classical ballet (CB) dancers, and to establish predictor factors and their cut off values for high risk of experiencing sciatica or low back pain (LBP). This retrospective cohort study was performed in 33 female professional CB dancers. Data related to anthropometric parameters, CB dance experience, sciatica or LBP history, and sagittal spine curvatures were collected. Read More

Diagnostics (Basel) 2021 May 22;11(6). Epub 2021 May 22.

Department of Diagnostic and Interventional Radiology, Medical Faculty, University Dusseldorf, D-40225 Dusseldorf, Germany.

Lumbar intervertebral disc (IVD) degeneration is characterized by structural and compositional changes. This study aimed to assess the glycosaminoglycan (GAG) content of IVDs of patients with adolescent idiopathic scoliosis (AIS) and healthy controls using GAG chemical exchange saturation transfer (gagCEST) imaging. Ten AIS patients (mean age 18. Read More

Clin Sports Med 2021 Jul;40(3):555-569

Department of Orthopaedic Surgery, University of Pennsylvania School of Medicine, 3737 Market Street, 6th Floor, Philadelphia, PA 19104, USA. Electronic address:

Although the safety of contact sports has improved over the years, participation in any sport always carries a risk of injury. When cervical or lumbar spine injuries do occur, prompt diagnosis is essential, and athletes must be held out of the sport if indicated to prevent further harm and allow for recovery. This article highlights some of the most common cervical spine pathologies (stinger/burners, strain, stenosis/cord neuropraxia, disc herniation, and fracture/instability) and lumbar spine pathologies (strain, disc degeneration, disc herniation, fracture, spondylolysis/spondylolisthesis, and scoliosis) encountered in sports and reviews the associated return to play guidelines and expectations for each condition. Read More

Osteoporos Int 2021 May 26. Epub 2021 May 26.

Frankfurt Center of Bone Health, Frankfurt, Germany and Philipps-University of Marburg, Marburg, Germany.

Pregnancy and lactation-associated osteoporosis (PLO) with predominantly subsequent vertebral fracture is a rare but severe disease with an estimated incidence of 0.4 in 100,000. In the past, patients with PLO have been predominantly treated with oral and i. Read More

Calcif Tissue Int 2021 May 26. Epub 2021 May 26.

Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.

Pregnancy- and lactation-associated osteoporosis (PLO) is a rare and severe disorder that causes low-trauma or spontaneous fractures, most commonly multiple vertebral fractures, in the late pregnancy or lactation period [1]. In severe PLO, teriparatide (TPTD) might aid in bone mineral density (BMD) recovery and subsequent fracture risk reduction. However, it is unclear whether TPTD can be discontinued without sequential antiresorptive therapy (ART) in premenopausal women with PLO. Read More

BMC Musculoskelet Disord 2021 May 24;22(1):476. Epub 2021 May 24.

Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong SAR, China.

Background: Vertebral compression fractures (VCFs) are the most common among all osteoporotic fractures. The body may compensate to the kyphosis from vertebral compression fractures with lordosis of the adjacent spinal segments, rotation of the pelvis, knee flexion and ankle dorsiflexion. However, the detailed degree of body compensation, especially the lower limb, remains uncertain. Read More

Arthrosc Sports Med Rehabil 2021 Apr 30;3(2):e515-e520. Epub 2021 Jan 30.

Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, Connecticut, U.S.A.

Purpose: To generate national estimates of sports-related traumatic lumbar spine injury incidence rates using the National Electronic Injury Surveillance System (NEISS) database and determine any sports- and sex-specific epidemiologic patterns of these traumatic injuries.

Methods: Data regarding traumatic lumbar spine injuries sustained through sporting activities from 2009 to 2018 were extracted from the NEISS, a database generating nationwide estimates through patient information collected during emergency department visits from 100 NEISS hospitals across the United States. The estimated number of injuries was calculated using weights assigned by the NEISS database depending on the geographic location of the injury. Read More

J Clin Orthop Trauma 2021 Jul 2;18:205-208. Epub 2021 May 2.

Dept of Community Medicine, AIIMS, Nagpur, India.

Objective: Conventionally spinal surgeries are done under general anaesthesia (GA). Plenty of literature is available on lumbar spine non-instrumented surgeries under spinal anaesthesia (SA) but handful of literature is there on lumbar spinal instrumented fusion surgeries under SA. We retrospectively analysed the data of 131 patients operated under SA and 108 patients under GA. Read More

J Surg Case Rep 2021 May 18;2021(5):rjab163. Epub 2021 May 18.

Instituto Guatemalteco de Seguridad Social, Ortopedia y Traumatología, Guatemala City, Guatemala.

The annual incidence of traumatic spinal cord injury worldwide is 35 patients per million; this incidence is likely to be much higher in Latin America, where stab injuries are a common incidence. Stab injuries to the spine represent a small percentage of these cases; these are rare injuries; its management may differ compared with other penetrating injuries; these injuries are frequently complicated with neurological damage; the most common clinical manifestation is Brown-Sequard syndrome, and the most common segment involved is the thoracic region; stab injuries to the lumbar spine are rarely found in the literature. The management of patients without neurological involvement is controversial due to the risk of neurologic deterioration intraoperatively. Read More

Arch Orthop Trauma Surg 2021 May 22. Epub 2021 May 22.

Department of Orthopedic, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China.

Purpose: To compare the efficacy of single anterior and single posterior approach of debridement, interbody fusion, and fixation for the treatment of mono-segment lumbar spine tuberculosis (TB) patients.

Methods: Eighty-seven patients with mono-segment lumbar TB who underwent debridement, interbody fusion, and fixation through either single anterior (Group A) or single posterior approach (Group B) from January 2007 to January 2017 were enrolled in this study. The duration of the operation, blood loss, complication rate, visual analog scale (VAS), Oswestry disability index (ODI), Frankel scale, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), kyphosis angle, correction rate, correction loss, and time taken for bone graft fusion were compared between the groups. Read More

Medicine (Baltimore) 2021 May;100(20):e25705

Working Group Exercise Oncology, Department of Medical Oncology, National Center for Tumor Diseases (NCT) Heidelberg, Heidelberg University Hospital.

Rationale: One repetition maximum (1-RM) testing is a standard strength assessment procedure in clinical exercise intervention trials. Because no adverse events (AEs) are published, expert panels usually consider it safe for patient populations. However, we here report a vertebral fracture during 1-RM testing. Read More

Int Biomech 2020 12;7(1):66-75

Faculty of Sport Sciences, Waseda University , Saitama, Japan.

Psychological pressure during sports competition disturbs the ideal physical movement and causes injury. Baseball batting frequently causes trunk injuries. This study aimed to examine the influence of psychological pressure on the lumbar kinematics and trunk muscle activity during the baseball batting. Read More

Bone 2021 May 14;150:116005. Epub 2021 May 14.

Département de Médecine Nucléaire, Hôpital Lapeyronie, Centre Hospitalier Régional Universitaire (CHRU) Montpellier, Montpellier, France; PhyMedExp, Université de Montpellier, INSERM, CNRS, Montpellier, France.

Background: Most obese women with low-trauma fractures present normal areal bone mineral density (aBMD), suggesting that other bone parameters are more determinant for fracture risk in these patients.

Objectives: (i) Determine the effects of obesity in young women on areal bone mineral density (aBMD), bone geometry, strength, and volumetric BMD determined by advanced DXA-based methods; (ii) model the profiles of bone parameters for each population with age; and (iii) determine the factors related to body composition (i.e. Read More

Osteoporos Int 2021 May 15. Epub 2021 May 15.

Institute of Cellular Medicine, Newcastle University, Newcastle, Upon Tyne, UK.

The pathogenesis for low-trauma wrist fractures in men is not fully understood. This study found that these men had evidence of significantly higher bone turnover compared with control subjects. Bone turnover markers were negative predictors of bone mineral density and were a predictor of fracture. Read More

J Neurosurg Spine 2021 May 14:1-5. Epub 2021 May 14.

1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona; and.

Objective: Minimally invasive surgery (MIS) techniques, particularly lateral lumbar interbody fusion (LLIF), have become increasingly popular for adult spinal deformity (ASD) correction. Much discussion has been had regarding theoretical and clinical advantages to addressing coronal curvature from the convex versus concave side of the curve. In this study, the authors aimed to broadly evaluate the clinical outcomes of addressing ASD with circumferential MIS (cMIS) techniques while accessing the lumbar coronal curvature from the concave side. Read More

Einstein (Sao Paulo) 2021 10;19:eAO5941. Epub 2021 May 10.

Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.

Objective: To correlate CrossFit-related injuries with previous sedentary lifestyle, and to investigate other factors potentially associated with higher rates of injury among practitioners.

Methods: A nationwide cross-sectional study involving CrossFit practitioners who received a digital questionnaire inquiring into CrossFit-related injuries, previous sedentary life, training intensity and experience, site of injury and general demographics.

Results: This sample included 121 CrossFit practitioners, 34. Read More

SICOT J 2021 10;7:31. Epub 2021 May 10.

Department of Orthopaedic and Trauma Surgery, Assiut University Hospitals, 71515 Assiut, Egypt.

Study Design: Complete audit cycle.

Introduction: To highlight the unjustified overuse of perioperative antibiotics in clean non-instrumented lumbar spinal surgeries. To convince orthopedic surgeons in a methodological way of local field comparison between common practice on the use of perioperative antibiotics prophylaxis (PAP) in clean non-instrumented lumbar spinal surgeries and the ideal practice according to "The guidelines published by North American Spine Society (NASS)". Read More

J Vis Exp 2021 04 23(170). Epub 2021 Apr 23.

Department of Integrative Medicine, Huashan Hospital, Fudan University;

Intervertebral disc degeneration (IDD) is a common pathological change leading to low back pain. Appropriate animal models are desired for understanding the pathological processes and evaluating new drugs. Here, we introduced a surgically induced lumbar spine instability (LSI) mouse model that develops IDD starting from 1 week post operation. Read More