The prevalence of radiographic trochlear dysplasia in patients with patellar fractures.

Purpose: Trochlear dysplasia is found in 3.2% (95% confidence interval (CI) 1.2-6.

Sex related differences in applied tidal volume with flow-controlled ventilation: a subgroup analysis.

Background: Flow-controlled ventilation (FCV) ensures a constant gas flow whereby precise determination of dynamic compliance is feasible. Accordingly, ventilator pressure settings can be adjusted to achieve the highest compliance. This setting will automatically adapt tidal volume to the functionally available lung volume as a personalized approach.

The effects of bolus compared to continuous administration of adrenaline on cerebral oxygenation during experimental cardiopulmonary resuscitation.

Background: Bolus administration of adrenaline during cardiopulmonary resuscitation (CPR) results in only short-term increases in systemic and cerebral perfusion pressure (CePP) with unclear effects on cerebral oxygenation. The aim of this study was to investigate the effects of bolus compared to continuous adrenaline administration on cerebral oxygenation in a porcine CPR model.

Methods: After five minutes of cardiac arrest, mechanical CPR was performed for 15 min.

[Posterior cruciate ligament rupture : state of the art].

Posterior cruciate ligament (PCL) ruptures can cause severe knee instability and disability and thus, appropriate management is crucial for the successful restoration of patients' knee function. Rupture of the PCL can occur during sporting activity but more often, as a part of high-energy trauma. The diagnosis can be made using various clinical tests, such as the posterior drawer test or the quadriceps active test.

Reliability and Validity of Temporal Parameters during the Side Hop Test in Patients after Anterior Cruciate Ligament Reconstruction.

The side hop test (SHT) measures the number of jumps performed over 30 s. Although this measure has demonstrated its value in clinical practice, the temporal parameters of the SHT allow for a deeper analysis of the execution strategy. The aim of this study is to assess the reliability and construct validity of contact time parameters during the SHT recorded by a video analysis system in anterior cruciate ligament reconstructed (ACLR) patients.

Surgical treatment of chronic proximal patellar tendon tears grades 3 and 4 using augmentation with quadriceps tendon-bone graft.

Background: Chronic proximal patellar tendinosis with partial tendon tears represents a multifactorial overuse injury. Several surgical techniques have been described with various outcomes and the return to sports may fail.

Hypothesis: Reconstruction of the proximal patellar tendon with augmentation using a quadriceps tendon-bone (QTB) graft improves knee function in patients presenting with proximal patellar tendinosis and partial tendon tears.

[Qatar 2022 : challenges and implications related to the medical follow-up of a national football team].

The preparation and medical follow-up of a national team during a major tournament, in particular climatic conditions and at an unusual date posed several problems, acclimatization, recovery in connection with a busy championship game, seasonal risk of infection, which had to be resolved. Close collaboration between the various people involved, team manager, coaches, physiologist, fitness coach and doctors is essential in order to prepare to face the challenges to be met to accompany an ambitious team.

Impact of COVID-19 Vaccination on Short-Term Perceived Change in Physical Performance among Elite Athletes: An International Survey.

COVID-19 vaccination raised concerns about its potential effects on physical performance. To assess the impact of COVID-19 vaccination on the perceived change in physical performance, we conducted an online survey among elite athletes from Belgium, Canada, France and Luxembourg, with questions about socio-demographics, COVID-19 vaccination, perceived impact on physical performance and perceived pressure to get vaccinated. Full vaccination was defined as two doses of mRNA or vector vaccine or a heterologous vaccine scheme.

Meniscal Repair Outcome in 3829 Patients With a Minimum Follow-up From 2 Years Up to 5 Years: A Meta-analysis on the Overall Failure Rate and Factors Influencing Failure.

Background: The importance of meniscal repair is widely accepted because of the association of loss of meniscal tissue with the development of early-onset knee arthritis. Many factors influencing the results of meniscal repair have been reported, but results remain controversial.

Purpose: This meta-analysis determines the pooled meniscal repair failure rate of studies with a minimum follow-up of 2 years up to 5 years, with a mean follow-up of 43 months.

Articular Cartilage Repair After Implantation of Hyaline Cartilage Beads Engineered From Adult Dedifferentiated Chondrocytes: Cartibeads Preclinical Efficacy Study in a Large Animal Model.

Background: Chondrocyte-based cell therapy to repair cartilage has been used for >25 years despite current limitations. This work presents a new treatment option for cartilage lesions.

Hypothesis: High-quality hyaline cartilage microtissues called Cartibeads are capable of treating focal chondral lesions once implanted in the defect, by complete fusion of Cartibeads among themselves and their integration with the surrounding native cartilage and subchondral bone.

Subjective knee apprehension is not associated to physical parameters 6-12 months after anterior cruciate ligament reconstruction.

Purpose: Anterior cruciate ligament (ACL) rupture is a common injury and psychological parameters measured at 6-8 months are said to be almost more predictive for return to sport (RTS) than physiological. Purpose was 1) to evaluate the correlation between knee apprehension using ACL-RSI and physical factors after ACL reconstruction (ACLR), 2) to assess the correlation between ACL-RSI and patient parameters (age, pivot-sport, BMI), and 3) to evaluate ACL-RSI over time.

Methods: Patients with ACLR with or without meniscal repair between 2013 and 2020 were retrospectively analyzed.

[Approach to the athlete with low back pain].

Low back pain is a common symptom in athletes, hindering their activity. The etiology is tightly linked to the type of sport, often a consequence of repetitive movements, high pressures and strain being applied to the spine and adjacent muscular and ligamentous structures and a high degree of activity. The diagnosis is the key and causes are usually not severe.

[How and why to monitor apprehension after anterior cruciate ligament surgery].

Numerous studies highlight the psychological aspect being the most frequent factors limiting the resumption of sport, following an anterior cruciate ligament reconstruction surgery, even before strength, the capacity of performing high impact pivoting movements, endurance, or joint stability. Scores that quantify apprehension, have been developed as clinical tool to monitor psychological readiness and in some cases to delay the moment for return to sport. Unfortunately, there are no established cut-off values for these scores to predict when and if return to sport at the same level as pre-traumatically can be resumed.

Impact of COVID-19 on elective, emergency and oncological surgery during the first and the second wave in a tertiary university hospital : Have we learned the lessons?

Background: The COVID-19 pandemic caused an important reduction in surgical activities during the first wave. Aim of this retrospective time-trend analysis was to examine whether also during the second wave in fall and winter 2020/2021 surgical interventions decreased.

Methods: Absolut numbers and types of surgeries in a tertiary university hospital during the second COVID-19 wave in fall/winter 2020/2021 were collected from the surgical planning software and compared with the same time frame over the last 5 years.

Nineteen percent of meniscus repairs are being revised and failures frequently occur after the second postoperative year: a systematic review and meta-analysis with a minimum follow-up of 5 years.

Purpose: Meniscus repair has gained increasing interest over the last two decades as loss of meniscus tissue predisposes to early onset knee arthritis. Although there are many reports of meniscus repair outcome in short-term studies, data on the long-term outcome of meniscus repair are still scarce. The purpose of this meta-analysis was to evaluate the overall failure rate of meniscus repair with a minimum follow-up of 5 years.

[Should allografts become gold-standard in ligamentous knee surgery ?].

Allografts in reconstructive knee surgery are an interesting option, due to the absence of donor site morbidity, its rather easy intraoperative handling, the different sizes, shorter surgical time, and therefore less peroperative risks. The risk of infection is very low. Their results are similar when non-irradiated and non-sterilized allografts are used in terms of postoperative strength, return to sport, and comparable stability testing.

[Classification and treatment of modern traumatic meniscal tears].

The menisci have several important biomechanical functions. Traumatic meniscal injuries present a wide spectrum of presentation and several types of lesions. They can concern the body of the meniscus and its fixation.

Operative Treatment Options for Patellofemoral Arthritis: An Expert Recommendation of the AGA Patellofemoral Committee.

Background: The operative therapy of patellofemoral arthritis requires an individual approach depending on the underlying injury. However, the literature lacks recommendations for its course of action.

Purpose: To generate an expert recommendation of therapy for different patellofemoral abnormalities in patients suffering from isolated patellofemoral arthritis.

The influence of a meniscal bucket handle tear on the Posterior Cruciate Ligament Angle in Anterior Cruciate Ligament Rupture - A case report.

Introduction: Chronic anterior cruciate ligament (ACL) tear might be difficult to diagnose on MRI. Indirect signs might be a typical meniscal or cartilage lesion, or a spontaneous anterior drawer visualized by a decreased angle of the posterior cruciate ligament (PCL).

Presentation Of Case: A 27-year-old former ballet dancer was admitted to the emergency department for a locked left knee, without never having experienced previous symptoms of giving way or locking.