Notes

CleftNet: Enhanced Serious Studying regarding Synaptic Cleft Discovery from Brain Electron Microscopy.
Since 1952, when Langenskiöld introduced his six-stage classification on roentgenographic morphologies of tibia vara, this method has been used extensively in Orthopaedic studies. Different studies have tried to determine the reliability of this method. Although there are scarce reports of major variability in using Langenskiöld classification, but the question still remains, as to whether using expert subspecialists and MRI would improve its reliability. The aim of this study is to evaluate inter-rater reliability of Langenskiöld classification using simple radiograph and MRI, by expert raters. This is a cross-sectional multicenter study, involving patients from 4 tertiary pediatric orthopedic centers in France and Iran. Radiograph and MRI (T1, T2, fat saturation) of the affected knees were independently classified by 12 academy members from France and Iran six pediatric fellowship orthopedic surgeons and six musculoskeletal radiologists. All data were analyzed afterwards by an independent researcher. Mean weighted kappa for agreement based on radiograph and MRI was 0.47 and 0.45, respectively. Mean percent of total agreement was 46.6 and 40.8% in the same order. Kappa statistics for the new grouping were 0.53 and 0.46 for roentgenograms and MRIs, respectively. The new regrouping was proposed so that each group would need a different treatment strategy. Fleiss kappa statistics for group B (stages 2 and 3), rose from (0.33 and 0.09) to 0.44. These values for group C (stages 4 and 5) rose from (0.42 and 0.11) to 0.54. This study concludes that Langenskiöld's classification when used by experts, still has a moderate inter-rater reliability at best. This variability is most at stages 2, 3, and 4; and can cause different treatment approaches. Use of MRI does not have a significant effect on its reliability. Regrouping the stages improved the inter-rater reliability. CDK inhibition Level of evidence III.
To understand postoperative resorption of the anterior osseous fragment following closed reduction and percutaneous pinning (CRPP) of pediatric supracondylar humerus fractures and its effect on final range of motion (ROM).

Eighty-six patients that underwent CRPP had sagittal and or axial plane deformities resulting in an anterior fragment. Humerocapitellar angle (HCA), anterior humeral line (AHL) and angle of rotation (AoR) were measured.

A total of 11 (12.8%) patients failed to resorb the anterior fragment, 10 (90.9%) had satisfactory ROM. HCA initially was acceptable in 40 (46.5%) patients, and 37 (92.5%) demonstrated acceptable ROM. Final HCA was acceptable in 44 (51.2%) patients and 42 (95.4%) had acceptable final ROM. AHL was in the anterior third of the capitellum in 35 (40.6%) patients and 33 (94.3%) had acceptable ROM. Final AHL was in the anterior third of the capitellum in 43 (50.0%) patients and 41 (95.3%) had acceptable final ROM. No difference was found between acceptable ROM and HCA or AHL at either follow-up.Sixty-five and 21 patients had an AoR of 0° and between 23 and 36°, respectively. A total of 59 (90.7%) patients with an AoR of 0°, and 18 (85.7%) patients with an AoR of 23-36° displayed acceptable ROM. A total of 57 (87.7%) patients with an AoR of 0° and 18 (85.7%) with an AoR of 23-36° resorbed the anterior fragment. No association was found between rotational deformity and postoperative ROM or fragment resorption.

Postoperative sagittal and axial plane alignment, HCA, AHL, AoR and resorption of the anterior osseous fragment does not correlate with final ROM.
Postoperative sagittal and axial plane alignment, HCA, AHL, AoR and resorption of the anterior osseous fragment does not correlate with final ROM.
Femoral shaft fractures are the most common pediatric injuries that require hospitalization. Early closed reduction and spica casting are one of the most popular treatment options. One of the significant complications of spica casting is rotational deformities of the fracture. The present study aimed to determine the potential effects of rotational deformities in pediatric patients who underwent early spica casting after a femoral shaft fracture.

Pediatric patients who underwent early spica casting following femoral shaft fractures were screened retrospectively. Radiological measurements were made on the patients' initial postop radiographs who could be measured rotationally according to the defined radiological method. Twenty-three patients with more than 10° of rotation in their measurements were included in the study. Differences in leg length and rotation between both legs were calculated with clinical examination methods for all patients in the study. The gaits of the patients were observed; patient treatment method. There may still be certain degrees of deformity after treatment, but patients well tolerate them even at high degrees. Accordingly, it was concluded that the rotational deformities less than 30 degrees would not cause clinical problems on children under 4 years of age which may require postoperative revisions or the use of various costly imaging techniques and include radiation.
Role of intrinsic muscles of the foot in the medial longitudinal arch mechanism was investigated in several recent studies. It is determined that the abductor hallucis muscle (AHM) has an important role in dynamic support of the arch. Objective of our preliminary study was to establish a relationship between the navicular drop index (NDI) and the AHM abduction force.

A single group exploratory design was used. The participants were 127 athletes aged 8-16 years (m/f 74/53; 11.99 ± 2.11 years; 156.21 cm ± 15.51 cm; 47.61 kg ± 13.96 kg; 2-5 training h/week), examined at a regular sport medical checkup. Abductor hallucis force was measured by a digital Algometer FPX 25/220, which is a newly developed approach that should be properly assessed in further studies to establish standardization and qualification of the algometer for this specific use. Navicular drop test has been performed as originally developed by Brody. Data were analyzed using Student's t-test, Mann-Whitney U test, contingency coefficients and logistic regression.
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