A novel and objective tool for determining total and shear joint contact forces after primary total hip arthroplasty.

Background And Purpose: Total hip arthroplasty, a common surgical procedure in orthopedics, is used in patients with severe hip osteoarthritis to relieve pain and to restore the function. The surgery has been shown to be effective, but patients may experience gait limitations after surgery. We used a novel and innovative tool, Computed MyoGraphy (CMG), to analyse the gait kinematics and forces acting within the musculoskeletal system after total hip arthroplasty.

Retrospective MRI analysis of 418 adult shoulder joints to assess the physiological morphology of the glenoid in a low-grade osteoarthritic population.

Background: Due to the difference in size between the humeral head and the glenoid, the shoulder joint is prone to instability. Therefore, the reconstruction of the physiological joint morphology is of great importance in shoulder joint preservation and replacement surgery. The aim of this study was to describe physiological reference parameters for the morphology of the glenoid for the first time.

Diagnosis, treatment, and prevention of ankle sprains: Comparing free chatbot recommendations with clinical guidelines.

Background: Free chatbots powered by large language models offer lateral ankle sprains (LAS) treatment recommendations but lack scientific validation.

Methods: The chatbots-Claude, Perplexity, and ChatGPT-were evaluated by comparing their responses to a questionnaire and their treatment algorithms against current clinical guidelines. Responses were graded on accuracy, conclusiveness, supplementary information, and incompleteness, and evaluated individually and collectively, with a 60 % pass threshold.

Change in Femoral Offset after Closed Reduction and Dynamic Hip Screw Osteosynthesis Via Lateral Approach in Patients with Medial Femoral Neck Fracture: A Retrospective Analysis.

Objective: Closed reduction and dynamic hip screw (DHS) osteosynthesis are preferred as joint-preserving therapy in case of medial femoral neck fractures (MFNFs). A change in the femoral offset (CFO) can cause gait abnormality, impingement, or greater trochanteric pain syndrome. It is unknown whether the femoral offset (FO) can be postoperatively fully restored.

MRI analysis of the physiological patellofemoral joint morphology of adult knees.

Objective: The aim of the present study was to determine physiological reference values for the morphology of the patella and to analyse these parameters according to patella position in healthy knee joints.

Material And Methods: Healthy knee joints of 409 patients (mean age, 52.3 years [± 16.

Two-screw osteosynthesis is biomechanically superior to single-screw osteosynthesis for type II odontoid fractures.

The data on the use of a one- or two-screw technique (1S, 2S) for ventral osteosynthesis of type II dens fractures are contradictory. The aim was to design an apparatus to mimic the physiological conditions and test stability with 1S, 2S, and a headless compression screw (HCS) for osteosynthesis of artificially created type II odontoid fractures. The apparatus was mounted on a Zwick materials testing machine.

Interleukin-6 as a critical inflammatory marker for early diagnosis of surgical site infection after spine surgery.

Purpose: Early diagnosis of surgical site infections (SSIs) could prevent surgical revision. Inflammatory markers (IMs), such as procalcitonin (PCT), interleukin-6 (IL-6), and tumor necrosis factor α (TNF-α), seem more accurate in diagnosing SSI than C-reactive protein (CRP) and white blood cell (WBC) count. The aim was to compare the predictive values of CRP, WBC count, PCT, IL-6, and TNF-α in SSI detection.

The influence of pelvic tilt on sacral insufficiency fracture occurrence: Insights into the prevalence of high pelvic tilt among patients affected.

Introduction: Fragility fractures without significant trauma of the pelvic ring in older patients have an increasing incidence due to demographic change. Influencing factors other than osteoporotic bone quality that lead to an insufficiency fracture are not yet known. However, it is suspected that the pelvic tilt (PT) has an effect on the development of such an insufficiency fracture.

Effects of Iliosacral Joint Immobilization on Walking after Iliosacral Screw Fixation in Humans.

Background: Pelvis fractures are commonly stabilized by surgical implants to facilitate their healing. However, such implants immobilize the iliosacral joint for up to a year until removal. We report how iliosacral joint immobilization affects the walking of patients.

[Tips and tricks of cement removal in the case of revision surgery].

Background: In Germany, current revision rates after arthroplasty range between 28-37%. In particular, remaining cement residues are causative for additional revision surgery after periprosthetic joint infection, which is why complete cement removal is of high importance. However, the removal of remaining cement residues often confronts the surgeon with technical challenges.

Cervical Disc Arthroplasties Fail to Maintain Physiological Kinematics Under Lateral Eccentric Loads.

Study Design: In vitro human cadaveric biomechanical analysis.

Objectives: Optimization of prostheses for cervical disc arthroplasties (CDA) reduces the risk of complications. The instantaneous helical axis (IHA) is a superior parameter for examining the kinematics of functional spinal units.

[Surgical management of acute traumatic spinal cord injury : Stability vs. functionality].

Background: Traumatic spinal cord injuries represent a devastating condition in the lives of those affected, with physical, emotional, and economic burdens for the patients themselves, their social environment, and society as a whole.

Objective: Surgical approach and techniques in traumatic spinal cord injuries.

Results: Traumatic spinal cord injuries should be surgically treated as soon as possible, but at least within 24 h of injury.

Effect of a Contrast Agent on Bone Mineral Density Measurement in the Spine and Hip Using QCT-Conversion Factor Recommendation.

Background: Osteoporosis causes an increased fracture risk. Clinically, osteoporosis is diagnosed late, usually after the first fracture occurs. This emphasizes the need for an early diagnosis of osteoporosis.

Combination of vertebral bone quality scores from different magnetic resonance imaging sequences improves prognostic value for the estimation of osteoporosis.

Background Context: Recent findings revealed a correlation between vertebral bone quality based on T1-weighted (VBQ) magnetic resonance imaging (MRI) and volumetric bone mass density (vBMD) measured using quantitative computerized tomography. The coherence of VBQ for other MRI sequences, such as T2 or short tau inversion recovery (STIR), has not been examined. The combination of different VBQs has not been studied.

Physiological Offset Parameters of the Adult Shoulder Joint-A MRI Study of 800 Patients.

Background: Humeral offset (HO) and glenoidal offset (GO) are important morphological parameters in diagnostics and therapy for shoulder pathologies. However, physiological reference values have not yet been sufficiently determined. The aim of the present study was to establish physiological reference values for shoulder offset parameters (SOPs).

Morphological Parameters of the Hip Joint and Its Relation to Gender, Joint Side and Age-A CT-Based Study.

Background: Physiological reference values for morphological parameters of the hip (MPH) are of clinical importance for the treatment of painful, degenerated or fractured hip joints, as well as to detect morphological deformities, which could result in early osteoarthritis of the hip. Currently, sufficient data for MPH are lacking. Therefore, it remains unclear if age-dependent alterations in adult hip morphology are physiological and if there are side- and gender-dependent differences.

Morphological Analysis of the Tibial Slope in 720 Adult Knee Joints.

Background: The tibial slope (TS) defines the posterior inclination of the tibial plateau (TP). The “individual physiological” TS plays a crucial role in knee-joint stability and should be taken into account in knee-joint surgery. The aim of this study was to analyse the specific morphology of the TS for the medial (med) and lateral (lat) TP in relation to patient characteristics and the measurement method.

A retrospective study about functional outcome and quality of life after surgical fixation of insufficiency pelvic ring injuries.

Background: Fragility fractures without significant trauma of the pelvic ring in older patients were often treated conservatively. An alternative treatment is surgery involving percutaneous screw fixation to stabilize the posterior pelvic ring. This surgical treatment enables patients to be mobilized quickly and complications associated with bedrest and temporary immobility are reduced.

Analysis of trans-sacral corridors in stabilization of fractures of the pelvic ring.

Percutaneous screw fixation combined with pelvic reduction is a surgical technique used to stabilize fractures of the posterior pelvic ring. This is the standard surgical treatment of unstable posterior pelvic ring injuries. The primary goal of this treatment is an anatomic reduction and stable fixation.

Anatomic reduction of the sacroiliac joint in unstable pelvic ring injuries and its correlation with functional outcome.

Purpose: Reduction and percutaneous screw fixation of sacroiliac joint disruptions and sacral fractures are surgical procedures for stabilizing the posterior pelvic ring. It is unknown, however, whether smaller irregularities or the inability to achieve an anatomic reduction of the joint and the posterior pelvic ring affects the functional outcome. Here, the long-term well-being of patients with and without anatomic reduction of the posterior pelvis after sacroiliac joint disruptions is described.