Automated patellar height assessment on high-resolution radiographs with a novel deep learning-based approach.

Background: Artificial intelligence and deep learning have shown promising results in medical imaging and interpreting radiographs. Moreover, medical community shows a gaining interest in automating routine diagnostics issues and orthopedic measurements.

Aim: To verify the accuracy of automated patellar height assessment using deep learning-based bone segmentation and detection approach on high resolution radiographs.

Periprosthetic Joint Infections Caused by Species-A Single-Center Experience and Systematic Review of the Literature.

Background: The aim of this study was to analyze the treatment results of fungal periprosthetic joint infections (PJI) caused by species from a single orthopedic center and to compare them with reports from other institutions.

Methods: Eight patients operated on from January 2014 to December 2021 met the inclusion criteria and were analyzed in terms of clinical outcomes. A systematic review of the literature identified 153 patients with PJIs extracted from 12 studies according to the PRISMA (Preferred Reporting Item for Systematic Reviews and Meta-Analyses) guidelines.

Femoroacetabular impingement in the unpinned contralateral hip in patients with primary unilateral slipped capital femoral epiphysis: preliminary radiographic outcomes.

The study evaluated femoroacetabular impingement (FAI) in the unpinned contralateral hip in patients with unilateral slipped capital femoral epiphysis (SCFE) and verified initial age, posterior sloping angle (PSA) and center-edge angle (CEA) as predictors of FAI in the contralateral hip. 152 patients with unilateral SCFE with a mean index age of 13.2 years (8.

Can we still use X-rays to predict contralateral slip in primary unilateral slipped capital femoral epiphysis?

The objective of this study was to assess subsequent contralateral slip (SCS) in the unaffected hip in patients with primary unilateral slipped capital femoral epiphysis (SCFE) using three radiographic parameters: posterior sloping angle (PSA), center-edge angle (CEA) and triradiate cartilage (TC) appearance. A total of 152 patients admitted to two pediatric units between 2001 and 2015 were divided into three groups: A - underwent prophylactic fixation of the unaffected hip at the time of index surgery- high clinical risk of SCS; B - no clinical risk factors but SCS occurred; C - no issues regarding the contralateral hip during follow-up. The mean PSA for groups A, B and C were 22°(6-49), 17°(9-24) and 13°(0-27), respectively.

The Effect of the COVID-19 Pandemic on Total Hip and Knee Arthroplasty Surgical Volume in 2020 in Poland.

The aim of this study was to analyse the effect of the first year of the COVID-19 pandemic on total hip arthroplasty (THA) and total knee arthroplasty (TKA) surgical volume in Poland. A retrospective analysis of data concerning THA and TKA collected by the National Health Fund in Poland in 2019 and in 2020 has been conducted. The number of primary hip or knee arthroplasties in 2020 was around 71% and 67% of the number registered in 2019, respectively.

Pelvic incidence and pelvic tilt can be calculated using either the femoral heads or acetabular domes in patients with hip osteoarthritis.

Aims: The aim of the study was to compare two methods of calculating pelvic incidence (PI) and pelvic tilt (PT), either by using the femoral heads or acetabular domes to determine the bicoxofemoral axis, in patients with unilateral or bilateral primary hip osteoarthritis (OA).

Methods: PI and PT were measured on standing lateral radiographs of the spine in two groups: 50 patients with unilateral (Group I) and 50 patients with bilateral hip OA (Group II), using the femoral heads or acetabular domes to define the bicoxofemoral axis. Agreement between the methods was determined by intraclass correlation coefficient (ICC) and the standard error of measurement (SEm).

Sagittal body alignment in a sitting position in children is not affected by the generalized joint hypermobility.

Back pain may be related to an improper sitting position. The aim of the study was to assess the sagittal curvatures of the spine in a sitting position in children with generalized joint hypermobility (GJH). The study included 302 children aged 8-14 years.

Parasitosis of the vertebral canal mimicking lumbar intervertebral disc herniation: a case report.

Study Design: Case report.

Background: It is a case of dracunculiasis of the spine mimicking lumbar intervertebral disc herniation.

Case Presentation: A 57 year-old Caucasian male was admitted to the hospital because of the left L5 radiculopathy lasting for 2 months.

Elevated plasma D-dimer concentration has higher efficacy for the diagnosis of periprosthetic joint infection of the knee than of the hip-A single-center, retrospective study.

The aim of this study is to evaluate the value of D-dimers in the diagnosis of periprosthetic joint infection (PJI). The analysis was performed for revision total hip (rTHA) and revision total knee arthroplasty (rTKA) together and separately with two thresholds, one calculated by statistical methods and the second adopted from the ICM 2018 definition. The study group comprised 133 patients who underwent rTHA or rTKA: 68 patients diagnosed according to the ICM 2018 definition (PJI group) and 65 with aseptic implant loosening, instability, malposition, or implant failure with the exclusion of infection (aseptic revision total joint arthroplasty or arTJA group).

Analysis of Radiographic Parameters of Sagittal Spinopelvic Alignment: Polish Nomenclature and Clinical Implications.

Over the last 30 years, many authors have suggested that the shape of the human spine in the sagittal plane is helpful in understanding its physiology and pathology. This paper presents the current views and Polish no-men-clature used for the assessment of the morphology and position of the pelvis in the sagittal plane. The va-lues of particular radiographic parameters are presented for healthy individuals and for patients with selected spinal pathologies.

Diurnal variation of body height in children with idiopathic scoliosis.

Background: Body height (BH) measurement is an important part of the clinical evaluation of children with idiopathic scoliosis (IS) as its progression is defined based on the observation of a growth spurt.

Objective: The aim of the study is to assess diurnal variation of BH in children with IS.

Methods: BH was measured in 98 children with IS (Cobb angle: 10∘-52∘, mean 21.

Non-structural misalignments of body posture in the sagittal plane.

Background: The physiological sagittal spinal curvature represents a typical feature of good body posture in the sagittal plane. The cervical and the lumbar spine are curved anteriorly (lordosis), while the thoracic segment is curved posteriorly (kyphosis). The pelvis is inclined anteriorly, and the lower limbs' joints remain in a neutral position.

Cobb angle measurements on digital radiographs using Bunnell scoliometer: Validation of the method.

Background: Electronic rulers on computer screen are used to measure the Cobb angle (CA) instead of traditional methods with rulers, protractors and pens. The variety of software used to assess radiographs might make the CA measurements cumbersome in everyday clinical practice.

Objective: The aim of the study was to verify the method of CA measurements on digital radiographs using Bunnell scoliometer (BS).

Influence of lower limbs discrepancy and pelvic coronal rotation on pelvic incidence, pelvic tilt and sacral slope.

Purpose: Pelvic incidence (PI), pelvic tilt (PT) and sacral slope (SS) are important parameters in sagittal spine alignment evaluation. The measurements are a projection of the three-dimensional pelvis onto a two-dimensional radiograph and they may be influenced by orientation of the pelvis. The aim of this study was to assess the influence of pelvic rotation in the coronal plane (CPR) on radiographic accuracy of PI, PT, and SS measurements.

Reliability of cervical lordosis measurement techniques on long-cassette radiographs.

Purpose: Lateral radiographs are commonly used to assess cervical sagittal alignment. Three assessment methods have been described and are commonly utilized in clinical practice. These methods are described for perfect lateral cervical radiographs, however in everyday practice radiograph quality varies.

Clinical and Radiographic Results of Indirect Decompression and Posterior Cervical Fusion for Single-Level Cervical Radiculopathy Using an Expandable Implant with 2-Year Follow-Up.

 Indirect posterior cervical nerve root decompression and fusion performed by placing bilateral posterior cervical cages in the facet joints from a posterior approach has been proposed as an option to treat select patients with cervical radiculopathy. The purpose of this study was to report 2-year clinical and radiologic results of this treatment method.  Patients who failed nonsurgical management for single-level cervical radiculopathy were recruited.

Cervical Sagittal Alignment in Scheuermann Disease.

Study Design: Retrospective evaluation of radiographs.

Objective: The aim of this study was to assess sagittal cervical balance in patients with the two types Scheuermann disease (SD).

Summary Of Background Data: The structural hyperkyphosis characterizing SD may be localized in the thoracic (SDT) or thoraco-lumbar (SDTL) spine segments.

Pathophysiology of Minimally Invasive Surgical Approaches: Current Concepts.

Spine surgery is a continuously evolving field. Traditional posterior midline approaches to the lumbar spine are associated with muscle injury. Common mechanisms of injury include ischemia, denervation, and mechanical disruption of tendinous attachments of lumbar muscles.

Influence of cervical spine position on the radiographic parameters of the thoracic inlet alignment.

Purpose: Cervical sagittal balance is a complex phenomenon, influenced by many factors, which cannot be described by cervical lordosis alone. Attention has been focused on the relationship between T1 slope, thoracic inlet angle, and cervical sagittal balance. However, the effect of cervical position on these parameters has not been evaluated yet.

The examination of the musculoskeletal system based only on the evaluation of pelvic-hip complex muscle and trunk flexibility may lead to failure to screen children for generalized joint hypermobility.

Objective: The aim of the study was to evaluate whether the clinical assessment of the pelvic-hip complex muscle and trunk flexibility is sufficient for diagnosing generalized joint hypermobility (GJH).

Design: A cross-sectional study.

Setting: Center of Body Posture in Olsztyn, North East Poland.

Pelvic incidence and pelvic tilt measurements using femoral heads or acetabular domes to identify centers of the hips: comparison of two methods.

Purpose: The aim of the study was to compare pelvic incidence (PI) and pelvic tilt (PT) measurements using the bicoxofemoral axis obtained from either femoral heads or acetabular domes on lateral digital radiographs of the spine.

Methods: Standing lateral radiographs of the spine of patients without hip pathologies were analyzed. PI and PT were measured on 50 radiographs using the femoral heads first followed by measurements performed with the acetabular domes to define the bicoxofemoral axis.

Comparison of perioperative complications following staged versus one-day anterior and posterior cervical decompression and fusion crossing the cervico-thoracic junction.

Introduction: Multilevel cervical pathology may be treated via combined anterior cervical decompression and fusion (ACDF) followed by posterior spinal instrumented fusion (PSIF) crossing the cervico-thoracic junction. The purpose of the study was to compare perioperative complication rates following staged versus same day ACDF combined with PSIF crossing the cervico-thoracic junction.

Material And Methods: A retrospective review of consecutive patients undergoing ACDF followed by PSIF crossing the cervico-thoracic junction at a single institution was performed.