[Epidemiology and Mortality in Hip Fractures: Impact of Surgical Latency in a Cohort from a Public Hospital in Chile].

Aim: Describe the epidemiology and mortality in hip fractures and their relationship with surgical latency.

Methods: Retrospective study of patients with hip fracture, operated in a center between 2009-2016. Non-operated patients, periprosthetic fractures, and stress fractures were excluded.

Over 50% of self-reported burnout among Latin American orthopaedic surgeons: A cross-sectional survey on prevalence and risk factors.

Objective: Assess the prevalence of self-reported burnout and identify risk and protective factors based on demographic and life quality aspects, among Latin American orthopaedic surgeons.

Methods: This study employed a cross-sectional analytical design. An original design survey was developed using multiple-choice and Likert-scale questions to gather self-reported burnout, demographic, work-related, social, personal, and mood-related data.

Knee Iliotibial Band Z-Plasty Lengthening and Bursectomy Technique.

Multiple surgical techniques have been described to treat refractory iliotibial band syndrome. However, there is lacking evidence demonstrating superiority of one technique over the other and limited audiovisual resources. Most surgical procedures aim to release the iliotibial band; nevertheless, few focus on reducing concomitant inflammation.

Vancomycin Presoaking of the Graft Appears to Prevent Infection After Anterior Cruciate Ligament Reconstruction: A Systematic Review and Meta-analysis.

: Vancomycin presoaking of the graft has been shown to decrease infection rates in some case series of anterior cruciate ligament (ACL) reconstruction. : We sought to substantiate the efficacy of vancomycin presoaked grafts for the prevention of infection after ACL reconstruction. : We performed a systematic review of Medline and OVID to assess the incidence of postoperative infection in studies comparing patients undergoing ACL reconstruction with the use of vancomycin presoaked ACL grafts and a control group of patients undergoing ACL reconstruction without the use of presoaked grafts.

There is direct relationship between bone bridge length and coracoclavicular fixation resistance to failure: Biomechanical study in a porcine model.

Background: This study aims to evaluate the relation between coracoclavicular resistance to failure and the distance between clavicular tunnels. The hypothesis is that a greater clavicular bone bridge between tunnels achieves a stronger coracoclavicular fixation.

Methods: Descriptive Laboratory Study.

Vancomycin presoaking of hamstring autografts to prevent infection in anterior cruciate ligament reconstruction: a narrative review.

Hamstring autograft use has been linked to an increased risk of infection after anterior cruciate (ACL) reconstruction compared to other grafts. The absolute reason for this remains unclear, with contamination after harvesting and preparation of the graft being the most accepted hypothesis.Using the rationale that a contaminated graft could be the main factor in postoperative septic arthritis and in an effort to maximize the antibiotic efficacy of the graft, the Vancomycin presoaking technique was developed.

Meniscal polyurethane scaffold plus cartilage repair in post meniscectomy syndrome patients without malalignment improves clinical outcomes at mid-term follow-up.

Background: The aim of this study is to report the mid-term follow-up results of a prospective cohort of patients who underwent a polyurethane (PU) meniscal scaffold implantation for post meniscectomy syndrome (PMS), without limb realignment procedures.

Methods: Prospective study in patients with PU meniscal scaffolds implanted during 2014-2016. Limb realignment procedures excluded.

High-Grade Patellar Chondral Defects: Promising Results From Management With Osteochondral Autografts.

Background: Patellar chondral defects represent up to 34.6% of defects found during routine arthroscopy. Surgical management has evolved during the past 20 years in an effort to develop techniques to replace hyaline cartilage.

Is the Clinician's Eye a Valid and Reproducible Tool for Diagnosing Patella Alta on a Lateral Knee Radiography?

Introduction: Validity and reproducibility of the clinician's eye (CE) to diagnose patella alta (PA) on a lateral knee radiography (radiograph) is unknown.

Methods: Cross-sectional study of 46 lateral knee x-rays. Three blind observers used CE, Insall-Salvati (IS), modified Insall-Salvati (mIS), and Caton-Deschamps (C-D) to determine patellar height.

Graft choice in combined anterior cruciate ligament and medial collateral ligament reconstruction.

There is a concern regarding which grafts should be used in combined anterior cruciate ligament (ACL) and medial collateral ligament (MCL) reconstructions, with a paucity of recommendations focused on this specific topic.Expert opinions suggest the use of allograft-only reconstructions to limit donor-site morbidity or using at least one allograft and one autograft.When a hamstring tendon autograft is harvested, techniques that maintain both the integrity of the sartorius fascia and the gracilis are recommended because of the role that the ST-G-S (semitendinosus-gracilis-sartorius) complex plays in valgus stability in the setting of an MCL-deficient knee.

Medial side knee injuries: simplifying the controversies: current concepts.

Injuries to the medial side of the knee (MSK) are the most common knee ligament lesions. Historically, these injuries have been treated conservatively; however, a better understanding of the anatomy and biomechanics of the different structures of the MSK have resulted in diverse and controversial opinions about the ideal management of these lesions. A cautious analysis should be done in nomenclature because the same surgical technique principles have been differently named in the literature.

Trends in Total Knee Arthroplasty in a Developing Region: A Survey of Latin American Orthopaedic Surgeons.

Introduction: A number of different total knee arthroplasty techniques are available. There is also a degree of surgeon preference for these, and the variation across orthopaedic surgeons in Latin America is currently unknown.

Methods: A survey on members of Sociedad Latinoamericana de Artroscopia, Rodilla y Deporte was performed, with questions based on categories within worldwide national joint registries.

Meniscus allograft transplantation: indications, techniques and outcomes.

New indications for meniscal allograft transplantation (MAT) are being added, but the general expert opinion is that it is still a procedure reserved for symptomatic meniscal loss.Lateral MAT has better clinical outcomes and less failure risk compared to medial MAT.Ideal conditions (low-grade chondral lesions) make MAT a more survivable and successful procedure.

Lower Limb Symmetry: Comparison of Muscular Power Between Dominant and Nondominant Legs in Healthy Young Adults Associated With Single-Leg-Dominant Sports.

Background: Achieving a symmetrical power performance (difference <15%) between lower limbs is generally recommended during sports rehabilitation. However, athletes in single-leg-dominant sports, such as professional soccer players, could develop significant asymmetry between their dominant and nondominant legs, such that symmetry does not act as a viable comparison.

Purpose: To (1) compare maximal muscular power between the dominant and nondominant legs in healthy young adults, (2) evaluate the effect of a single-leg-dominant sport activity performed at the professional level, and (3) propose a parameter of normality for maximal power difference in the lower limbs of this young adult population.

Five-Strand Hamstring Autograft Versus Quadruple Hamstring Autograft With Graft Diameters 8.0 Millimeters or More in Anterior Cruciate Ligament Reconstruction: Clinical Outcomes With a Minimum 2-Year Follow-Up.

Purpose: To compare the outcomes of 2 groups of patients undergoing anterior cruciate ligament (ACL) reconstruction: the first with a quadrupled semitendinosus gracilis (ST-G) autograft larger than 8 mm diameter and the second with a 5-strand ST-G autograft larger than 8 mm due to an insufficient diameter graft harvesting.

Methods: This was a retrospective study with 70 patients divided into 2 groups. Inclusion criteria included ACL ruptures of less than 3 months, ST-G ACL reconstructions, and final (4-strand or 5-strand) graft size larger than 8 mm.

Platelet-rich plasma use in anterior cruciate ligament surgery: systematic review of the literature.

Purpose: To systematically review the current literature for evidence that would substantiate the use of platelet-rich plasma (PRP) in the treatment of anterior cruciate ligament (ACL) ruptures.

Methods: We performed a systematic search in PubMed and Embase of studies written in the English and Spanish languages that compared the use of PRP with a control group in patients with ACL injuries assessing graft-to-bone healing, graft maturation, and/or clinical outcomes and were randomized controlled trials or prospective cohort studies.

Results: Eleven studies fulfilled the inclusion criteria, comprising 516 patients (266 ACL reconstructions using PRP and 250 ACL reconstructions without PRP).

Transphyseal anterior cruciate ligament reconstruction in patients with open physes: 10-year follow-up study.

Background: The treatment of anterior cruciate ligament (ACL) injuries in skeletally immature patients is controversial. Current evidence supports the view that surgical techniques restore knee stability and prevent progressive articular damage. However, most of the studies on this topic are small case series or they have short- or medium-term follow-up times.

Anterior cruciate ligament reconstruction in patients over 50 years of age.

Purpose: To describe the clinical outcomes of patients over 50 years of age with following anterior cruciate ligament (ACL)reconstruction for acute rupture.

Methods: A prospective series of patients over the age of 50 years with a diagnosis of ACL rupture who underwent ACL reconstruction was examined. Lysholm and International Knee Documenting Committee (IKDC) subjective scores were assessed preoperatively and at the final follow-up.

Septic arthritis in ACL reconstruction surgery with hamstring autografts. Eleven years of experience.

Background: Knee joint infection after ACL reconstruction is a rare complication with a low reported incidence, but the consequences can be devastating. The purpose of the study was to determine the incidence of septic arthritis after primary ACL reconstruction with hamstring auto-graft and the risk factors that may be associated.

Method: A retrospective study of all primary ACL reconstruction from January 2000 to May 2011.

A novel radiographic index for the diagnosis of posterior acromioclavicular joint dislocations.

Background: Posterior acromioclavicular (AC) joint dislocations are frequently misclassified because posterior translation of the clavicle is difficult to evaluate in Zanca radiograph views. A novel radiographic index was used in this study to accurately diagnose posterior dislocations of the AC joint.

Hypothesis: This novel index has a high degree of accuracy for the diagnosis of posterior AC joint dislocations.

Intraarticular Administration of Dexamethasone after Mesenchymal Stem Cells Implantation Does Not Improve Significantly the Treatment of Preestablished Full-Thickness Chondral Defect in a Rabbit Model.

Objective: The aim of this study was to evaluate the contribution to hyaline cartilage regeneration of dexamethasone intraarticular administration after autologous mesenchymal stem cells (MSCs) implantation into a preestablished knee full-thickness chondral defect.

Design: Full-thickness chondral defects of 4.5 × 4.

Anterior cruciate ligament regeneration using mesenchymal stem cells and collagen type I scaffold in a rabbit model.

Purpose: The objective of this study was to determine whether using mesenchymal stem cells (MSC) seeded in a collagen type I scaffold would be sufficient to regenerate the torn anterior cruciate ligament (ACL).

Methods: Anterior cruciate ligament transection was performed on both knees in 10 New Zealand rabbits and then repaired with as follows: suture alone (suture-treated group, n = 6), suture associated with collagen type I scaffold (collagen type I scaffold-treated group, n = 8) or suture associated with autologous MSC seeded on collagen type I scaffold (MSC/collagen type I scaffold-treated group, n = 6). At 12-week post-intervention, the animals were killed and the ACLs were characterised macroscopically and histologically.

Clinical outcomes after arthroscopic treatment of knee osteoarthritis.

Purpose: The aim of this study was to describe the clinical outcomes of patients with knee osteoarthritis (OA) treated with arthroscopic surgery, documenting the associated injuries and defining the type of treatment selected for OA patients with different symptoms.

Hypothesis: Knee arthroscopy is effective for treating patients with symptomatic OA and mechanical symptoms.

Methods: This was a prospective, consecutive series of 100 patients with a clinical and radiological diagnosis of OA who were treated with knee arthroscopy.