PurposeTo evaluate the balance in patients with total knee arthroplasty (TKA) and knee osteoarthrosis (KOA), measured by postural stability computerized evaluation (PSCE), and to evaluate the effect of post-TKA patients' characteristics in their performance on PSCE.Materials and methodsAn observational cross-sectional study was conducted in two sets of patients: (A) patients with KOA and primary TKA surgery scheduled and (B) patients who underwent primary TKA >9 months. Sociodemographic, radiographic, clinical and PSCE parameters (using the Biodex Balance System) were assessed.ResultsPost-TKA patients placed more load on the replaced knee than the contralateral osteoarthritic knee (p = 0.027). They had less imbalance on the balance tests performed with the eyes open, on stable (p = 0.032), and unstable platforms (p = 0.022). These patients also showed better postural stability in monopodalic stance, both standing on the TKA (p = 0.010) and contralateral knee (p = 0.017). Age, weight, pain on the operated knee, extension deficit on the operated knee, and Berg Balance Scale scores on post-TKA patients were significantly associated with their performance on PSCE tests.ConclusionsPSCE can be useful to quantify the balance of post-TKA and KOA patients.

Objective: The aim of the study is to characterize pressure injuries, identify risk factors, and develop a predictive model for pressure injuries at intensive care unit admission for critical COVID-19 patients. Design: This study was a retrospective analysis of a consecutive sample of patients admitted to intensive care unit between May 2020 and September 2021. Inclusion criteria encompassed the diagnosis of acute respiratory distress syndrome due to SARS-CoV-2, requiring invasive mechanical ventilation more than 48 hrs. The following predictors were evaluated: sociodemographic characteristics, comorbidities, as well as clinical and laboratory findings at intensive care unit admission. The primary outcome was the presence of pressure injuries. Results: Two hundred five patients were included, mostly males (73%) with a mean age of 62 yrs. Pressure injury prevalence was 58%. On multivariable analysis, male sex, hypertension, hemoglobin, and albumin at intensive care unit admission were independently associated with pressure injuries, constituting the PRINCOVID model. The model reached an area under the receiver operating characteristic curve of 0.71, surpassing the Braden scale (P = 0.0015). The PRINCOVID score ranges from 0 to 15, with two risk groups: “at risk”(≤7 points) and “high risk”(>7 points). Conclusions: This study proposes PRINCOVID as a multivariable model for developing pressure injuries in critical COVID-19 patients. Based on four parameters (sex, hypertension, hemoglobin, and albumin at intensive care unit admission), this model fairly predicts the development of pressure injuries. The PRINCOVID score allows patients’ classification into two groups, facilitating early identification of high-risk patients.

This study aimed (a) to evaluate the spatiotemporal gait variables of total knee arthroplasty (TKA) before (pre-) and after the procedure (post-), and (b) to investigate the influence of the surgical side on these variables. Twenty-one volunteers (13 females and 8 males) participated, undergoing assessments pre-surgery and nine to 12 months post-surgery. Clinical tests indicated significant reductions in knee pain and improvements in active and passive extension post-surgery. TKA resulted in decreased pain, extension deficits, and functional assessments, with lower scores on the WOMAC questionnaire. A gait analysis showed post-surgery improvements in gait speed (5.8%), cycle time (−4.8%), step time (4.4%), double limb support time (−11.1%), step (4.4%) and stride (6.3%) lengths, and step (5.1%) and stride (5.0%) cadences. Comparisons between surgical side and limb dominance indicated significant differences in gait speed, stance, swing and step times, double limb support time, step and stride lengths, and step cadence. The non-dominant limb demonstrated greater improvements across most parameters compared to the dominant limb. These findings emphasize the importance of considering the limb dominance of patients with knee osteoarthritis when evaluating post-TKA function. These conclusions can be helpful for personalized rehabilitation programs, allowing tailored interventions for individuals undergoing knee surgery.