Efficacy of Physical Rehabilitation after Anterior Cruciate Ligament Reconstruction: Non-Randomized Trial

Background. Anterior cruciate ligament rupture is the most common knee joint injury, especially in young people with a healthy and active lifestyle. The concept of quality of life has been dynamically developing. The scope of its application is expanding in various fields of medicine to provide a comprehensive assessment of treatment and rehabilitation efficacy.Objective — to assess the feasibility of complex individual physical rehabilitation of patients after early and delayed arthroscopic reconstruction of the anterior cruciate ligament (ACL).Methods. Open simple non-randomized trial enrolled 834 patients with the anterior cruciate ligament rupture of the knee joint. In the first group (431 patients), ACL plastic surgery was performed in the early stages — between weeks 2 and 6. In the second group (403 patients), ACL reconstruction was performed in the later stages — from week 7 to 1 year, inclusive. Each group was divided into two subgroups — the main one, in which restorative treatment and comprehensive individual rehabilitation were carried out, and the control group, with rehabilitation treatment in accordance with the standards of postoperative treatment. The study was conducted in Traumatology, Orthopedics and Medical Rehabilitation Unit of Clinical Hospital No. 1. Patients were included in the trial from 2016 to 2021. The follow-up period for each patient was one year. Statistical data processing was performed by means of Statistica 12.0 (StatSoft, Inc., USA). Independent samples were compared using non-parametric criteria: Mann — Whitney U-test and Wilcoxon T-test.Results. No statistical differences were found in the distribution according to gender, age and body mass index. A comparative analysis of scale medians of Medical Outcomes Study 36Item Short-Form Health Survey (MOSSF-36), conducted in patients before surgery, revealed no statistically significant differences ( p>0.05) between the main and control subgroups in both groups. Analyzing medians before ACL reconstruction showed a significant decrease in comparison with population studies ( p < 0.0001, Mann — Whitney U-test). The analysis of physical and mental component summaries via MOSSF-36 revealed statistically significant differences in the effectiveness of treatment of patients in 1 year after ACL plastic surgery and complex individual rehabilitation. Thus, in the main subgroups, the values of treatment efficacy medians were significantly higher than in the control ones, regardless of the timing of ACL plastic surgery ( p < 0.001, Mann — Whitney U-test). The results testify to higher median efficacy values in patients of the main subgroup of group 1 than in other subgroups ( p < 0.001, Mann — Whitney U-test). The study of correlative relationships demonstrated a stronger relationship between the medians of physical and mental component summaries in the main subgroup of the first group (correlation coefficient = 0.76), if compared to the main subgroup of the second group (coefficient = 0.67).Conclusion. The study testified to the treatment efficacy proved using the scales of physical and mental component summaries. They demonstrated more significant treatment efficacy one year after arthroscopic ACL reconstruction and individual rehabilitation in the main subgroup of group 1 than in the other subgroups

Additive manufacturing of inorganic scintillator-based particle detectors

Inorganic scintillators are widely used for scientific, industrial and medical applications. The development of 3D printing with inorganic scintillators would allow fast creation of detector prototypes for registration of ionizing radiation, such as alpha and beta, gamma particles in thin layers of active material and soft X-ray radiation. This article reports on the technical work and scientific achievements that aimed at developing a new inorganic scintillation filament to be used for the 3D printing of composite scintillator materials: study and definition of the scintillator composition; development of the methods for the inorganic scintillator filament production and further implementation in the available 3D printing technologies; study of impact of the different 3D printing modes on the material scintillation characteristics. Also, 3D printed scintillators can be used for creation of combined detectors for high-energy physics.Comment: 14 pages, 16 figure

Оценка эффективности реабилитации после артроскопической реконструкции передней крестообразной связки

Целью исследования явилось изучение эффективности лечения пациентов после артроскопической реконструкции передней крестообразной связки с применением индивидуальной физической реабилитации. Материалы и методы. В исследование включены 834 пациента в возрасте 18–55 лет (464 мужчины и 370 женщин) с диагнозом «разрыв передней крестообразной связки коленного сустава». Пациенты были распределены на две группы: контрольную – 530 человек (302 мужчины и 228 женщин), которые получали стандартное послеоперационное лечение; основную – 304 человека (162 мужчины и 142 женщины), которые помимо стандартного послеоперационного лечения получали комплексную индивидуальную реабилитацию. Эффективность лечения оценивали с помощью субъективных ортопедических опросников в ходе динамического наблюдения (до операции и через 1 год после операции и реабилитации). Результаты. Спустя 1 год после артроскопической реконструкции передней крестообразной связки и физической реабилитации у пациентов основной группы установлены статистически значимо более высокие медианы эффективности лечения по данным ортопедических опросников, чем у контрольной. Важно также отметить, что пациенты основной группы статистически значимо чаще демонстрировали высокие показатели эффективности лечения по сравнению с представителями контрольной группы. Таким образом, исследование подтвердило, что применение комплексной индивидуальной реабилитации у пациентов, перенесших хирургическое вмешательство после разрыва передней крестообразной связки, значимо улучшает их физическое и психическое состояние