Objective: Turnout is a dance position with known contributions from the hip, knee, and foot. A standardized method measuring total turnout has not been established. This study assessed the relationships between first position turnout (FPT) and measures of hip and tibiofemoral external rotation.
Design: This is a retrospective chart review of screening physical examination data of the knee and hip in collegiate female dancers. Measurements included FPT, active hip external rotation in sitting (HERS), active hip external rotation in prone, and passive tibiofemoral external rotation (TFR). Measurement comparisons were made using paired-samples t tests, Pearson product moment correlation coefficients, and hierarchical multiple regression analyses.
Results: Twenty-three female dancers (aged 18-21 yrs) participated. Correlations ranged from 0.01 (left HERS and left TFR) to 0.54 (left TFR to left FPT). Hip rotation in sitting explained a significant amount of variance in FPT (17% explained variance on the right and 19% variance on the left). Left TFR explained an additional 30% of the variance in left FPT beyond the variance explained by HERS. Right TFR did not explain a significant amount of the variance in right FPT beyond the variance explained by HERS.
Conclusions: These findings suggest that active HERS and TFR are important contributors to FPT and that the relative contribution of these motions differ between sides.
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http://dx.doi.org/10.1097/PHM.0b013e3182465dff | DOI Listing |
J Clin Orthop Trauma
February 2025
University of Tennessee Health Science Center ¬ Campbell Clinic Department of Orthopaedic Surgery and Biomedical Engineering, 1400 S. Germantown Pkwy, Germantown, TN, 38138, USA.
Introduction: Reverse shoulder arthroplasty (RSA) and anatomic total shoulder arthroplasty (TSA) are well-known methods of treating glenohumeral arthritis, which often leads to posterior wear of the glenoid. This study compared minimum two-year outcome measures in patients treated with RSA and TSA for Walch B2 and B3 glenoids.
Methods: Thirty-eight shoulders underwent TSA and 40 shoulders underwent RSA by two fellowship-trained shoulder surgeons at a tertiary referral center.
Orthop J Sports Med
January 2025
Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.
Background: Tibiofemoral rotation is an emerging parameter, especially in assessing patellofemoral instability. However, reference values in the literature are inconsistent regarding the used imaging modality and do not consider the effect of knee flexion during image acquisition.
Purpose: To analyze the differences in tibiofemoral rotation measurements between computed tomography (CT) and magnetic resonance imaging (MRI).
J Brachial Plex Peripher Nerve Inj
January 2025
Integrative Neuromedicine, Community Hospital Herdecke, Witten/Herdecke University, Herdecke, Germany.
To date, there are no uniform guidelines for the treatment of obstetric plexus lesions in German-speaking countries. An end-to-end direct suture after resection of trunk neuroma is recommended for surgical treatment if tension-free coaptation is possible, whereas the use of autologous nerve grafts bridging the gap between the adaptation margins is advised by consensus if tension-free coaptation is impossible. The aim of the study was to investigate which reconstruction strategy may provide a better recovery of motor function for patients after obstetric brachial plexus lesion.
View Article and Find Full Text PDFWe propose a low-polarization-sensitive 1 × 2 carrier-injection-type silicon photonic switch consisting of a single Mach-Zehnder interferometer, an input-/output-side polarization splitter and rotators, bidirectional light injection, and an external optical circulator. A polarization-dependent loss (PDL) of 1.3 dB was achieved using the proposed structure, whereas a PDL exceeding 17 dB was observed without the structure.
View Article and Find Full Text PDFJ Bone Joint Surg Am
November 2024
Department of Orthopaedic Surgery, Harvard Medical School, Boston Shoulder Institute, Massachusetts General Hospital, Boston, Massachusetts.
Background: Rotator cuff repair (RCR) is a frequently performed outpatient orthopaedic surgery, with substantial financial implications for health-care systems. Time-driven activity-based costing (TDABC) is a method for nuanced cost analysis and is a valuable tool for strategic health-care decision-making. The aim of this study was to apply the TDABC methodology to RCR procedures to identify specific avenues to optimize cost-efficiency within the health-care system in 2 critical areas: (1) the reduction of variability in the episode duration, and (2) the standardization of suture anchor acquisition costs.
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