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Following the outbreak of coronavirus disease, many experience feedbacks have been set up, at the level of departments, hospitals or crisis units. In a geriatric ward, this helped to understand what had happened to each of the caregiver and to the community. In the event of a new wave, this will allow them to anticipate. This period strengthened the sense of belonging and the interest in the well-being of the care receiver.Coronavirus disease 2019 caused one of the largest health crises ever known. It is primarily defined as a viral respiratory infection, and the symptomatology can take various forms, particularly among the elderly population, who are most at risk of severe disease. Despite rapid scientific advances, therapeutics unfortunately are still very limited, especially for this category of patients. The priority is therefore to adopt and comply with preventive measures as far as possible, while awaiting possible progress.The learning curve of hip arthroscopy has been described as steep. A wide range, between 30 and 520 cases, has been gathered as the learning curve before complications are minimized. While the precise number of cases required for proficiency has remained elusive, the heterogeneity in surgeon profile and baseline training can serve as an explanation. Moreover, as caseload increases, case complexity, revision surgeries, and outside referrals may begin to consume the greater-volume surgeon. While the learning curve remains hard to define, innovations in surgical training hold the promise of improving proficiency. Regardless of career stage, hip arthroscopists can still expect improved patient outcomes with appropriate indications and a properly executed procedure.Knee osteoarthritis is associated with an annual cost to society exceeding US$27 billion. Value-based treatment is an important consideration, and cost-benefit analyses are crucial to determine the benefits to both patients and society. The quality-adjusted life year (QALY) is a generic measure of burden including both quality and quantity. Recent studies have suggested that intra-articular injection of platelet-rich plasma (PRP) is effective treatment for knee osteoarthritis and comparable to hyaluronic acid (HA). Although the costs (dollars) per QALY were higher for PRP ($8,635) than for HA ($5,331), PRP was more cost effective at 1 year and was associated with an incremental cost-effectiveness ratio (ICER) of $12,628 QALY. Similarly, the utility value (proportion of QALY compared with perfect health) of PRP was higher by 0.11 QALY 0.69 versus 0.58.Meniscal allograft transplantation (MAT) for symptomatic knees after meniscectomy decreases pain and often improves function, but it does not replicate a normal meniscus. The ability of MAT to delay arthritic changes is an ongoing area of study, and it is known that outcomes and graft survivorship deteriorate with longer follow-up. Recommended indications are symptomatic patients after meniscectomy with mild (or at most moderate) degenerative changes and absence of (or surgically corrected) associated malalignment or ligament deficiency. When these indications are followed, 80% of patients improve, with survivorship of 83% at 10 years and 56.2% at 20 years. Medial or lateral MAT shows no difference with respect to graft survivorship or patient-reported outcome measures. Meniscus allografts fixed with bone have less graft extrusion than soft tissue fixation alone. While MAT can be beneficial in an arthritic knee in the short term, the survivorship in knees with advanced arthritis is much smaller, with an extensive rehabilitation requirement, and there is a limited supply of meniscal allograft tissue.The irrigation of joints during arthroscopic procedures typically uses a non-physiological solution. This replaces the natural synovial fluid and rapidly subjects the connective tissues to an alien hypo-osmotic environment in which cartilage cells are far more sensitive to iatrogenic injury. Raising the osmolarity of the irrigating solution may be a simple, safe, and effective chondroprotective strategy.Providing accurate information to patients regarding health conditions, treatment options, and prognosis is a crucial aspect of medical management and an ethical obligation. Office visits may be limited due to time constraints imposed by scheduling, which may result in missed opportunities to provide extensive information when history, physical examination, review of diagnostic testing, and planning is required. As the Internet is now an established platform and easily accessible, patients are increasingly seeking information from websites out of curiosity and for additional questions pertaining to their health condition. PARP phosphorylation However, the reliability and accuracy of anterior cruciate ligament videos on YouTube are of evidence-based very low quality and reliability.Trochlear dysplasia may be asymptomatic and benign, or could engender patellar instability and degenerative arthritis. Autologous chondrocyte implantation is demonstrating promising outcomes for the treatment of patellofemoral cartilage lesions, but may not suffice for knees with underlying mechanical anomalies as trochlear dysplasia, where adjuvant trochleoplasty or tibial tubercle osteotomy may be required to prevent patellofemoral instability and to protect the graft from wear and damage. Rigorous radiographic assessment is important to discern the type of dysplasia, notably the presence of a potentially pathogenic supra-trochlear spur. Trochleoplasty or other realignment procedures such as tibial tubercle osteotomy should be considered where necessary to correct underlying trochlear deformities and thereby avoid iatrogenic complications or failure.The desire to better re-create the native anatomy in orthopaedic surgery-and especially knee ligament reconstruction-was an area of great debate and discussion approximately 10 years ago in anterior cruciate ligament (ACL) reconstruction. Our better and more detailed understanding of the anatomy, especially the insertional anatomy, of the ACL fueled the debate over the best surgical technique to maximize function, improve patient outcomes, and reduce long-term morbidity. While these discussions are still ongoing, detailed study of the medial patellofemoral complex (MPFC) anatomy is bringing us "back to the future" with similar discussions on how to best re-create this anatomy. Although specific techniques and surgical risks versus rewards will continue to be debated, our improved understanding of the anatomy of the MPFC, similar to our improved understanding of the ACL, ultimately will improve how MPFC reconstruction is performed and improve patient outcomes.