Portuguese Translation and Cross-Cultural Adaption of the Banff Patella Instability Instrument.

 To translate into Brazilian Portuguese and to cross-culturally adapt the Banff Questionnaire for Patellar Instability.  The translation and cross-cultural adaptation followed the linguistic validation process proposed by international guidelines, which consists of six steps: translation, synthesis, back-translation, review by an expert committee, pretest, and final report presentation to the authors of the original questionnaire. Literate patients with recurrent patellar instability, older than 12 years of age, who signed the informed consent form or had it signed by a legal guardian were included in the study.

Osteochondritis Dissecans Lesion Location Is Highly Concordant With Mechanical Axis Deviation.

Background: The cause of osteochondritis dissecans (OCD) is unknown.

Purpose: To determine if mechanical axis deviation correlates with OCD lesion location in the knee, if degree of mechanical axis deviation correlates with size of OCD lesion, and if the deformity was primarily in the distal femur or proximal tibia.

Study Design: Cross-sectional study; Level of evidence, 3.

Osteochondritis dissecans of the trochlea: case report.

The authors report a rare case of osteochondritis dissecans of the trochlea. The treatment of these lesions, in which the osteochondral fragment is not viable, is difficult and often limited in Brazil. A clinical case is presented with functional and radiological outcomes after treatment with microfracture technique, bone graft, and collagen membrane coverage.

Proximal tibiofibular joint dislocation treated using flexible and permanent syndesmosis fixation.

We present the case of a 40-year-old man who suffered an isolated proximal tibiofibular dislocation of the left knee after a trauma during a soccer game. Physical examination and radiographic imaging revealed an anterolateral dislocation of the proximal fibula. The diagnosis was confirmed by MRI.

Anatomic Posterolateral Corner Reconstruction With Autografts.

Anatomic posterolateral corner reconstruction reproduces 3 main structures: the lateral collateral ligament, the popliteofibular ligament, and the popliteus tendon. The LaPrade technique reproduces all 3 main stabilizers. However, it requires a long graft, limiting its indication to clinical settings in which allograft tissue is available.

Fresh Osteochondral Allograft Transplantation for Fractures of the Knee.

Objective The purpose of this study was to evaluate functional outcomes and allograft survivorship among patients with knee fracture who underwent fresh osteochondral allograft (OCA) transplantation as a salvage treatment option. Design Retrospective analysis of prospectively collected data. Setting Department of Orthopaedic Surgery at one hospital.

Surgical interventions (microfracture, drilling, mosaicplasty, and allograft transplantation) for treating isolated cartilage defects of the knee in adults.

Background: Cartilage defects of the knee are often debilitating and predispose to osteoarthritis. Microfracture, drilling, mosaicplasty, and allograft transplantation are four surgical treatment options that are increasingly performed worldwide. We set out to examine the relative effects of these different methods.

Anterior cruciate ligament - updating article.

This updating article on the anterior cruciate ligament (ACL) has the aim of addressing some of the most interesting current topics in this field. Within this stratified approach, it contains the following sections: ACL remnant; anterolateral ligament and combined intra and extra-articular reconstruction; fixation devices; and ACL femoral tunnel creation techniques.

High Failure Rate of a Decellularized Osteochondral Allograft for the Treatment of Cartilage Lesions.

Background: Widespread adoption of fresh allograft transplantation remains limited, predominantly by supply issues. To overcome these limitations, a preshaped, cylindrical sterilized and decellularized osteochondral allograft (SDOCA) implant was recently introduced as a clinical treatment option.

Purpose: To evaluate functional outcomes and graft survivorship among patients treated with the SDOCA implant for knee cartilage injuries.

Osteochondral Allograft MRI Scoring System (OCAMRISS) in the Knee: Interobserver Agreement and Clinical Application.

Introduction: Osteochondral allograft (OCA) transplantation is a suitable treatment option for large osteochondral defects. Magnetic resonance imaging (MRI) is an objective, reproducible, noninvasive monitoring tool for postoperative assessment after cartilage surgery.

Objective: To correlate Osteochondral Allograft MRI Scoring System (OCAMRISS) in patients undergoing OCA transplantation in the knee with clinical outcomes and determine interobserver agreement of this scoring system.

Osteochondral Allograft Transplantation for Knee Lesions after Failure of Cartilage Repair Surgery.

Objective: The objective of this study was to assess the outcome of osteochondral allograft (OCA) transplantation as a salvage procedure after various cartilage repair surgeries.

Design: One hundred sixty-four knees in 163 patients (mean age = 32.6 years; range = 11-59 years; 55% males) were treated with OCA transplantation after subchondral marrow stimulation (SMS), osteochondral autograft transplantation (OAT), and autologous chondrocyte implantation (ACI).

Variability in Distal Femoral Anatomy in Patients Undergoing Total Knee Arthroplasty: Measurements on 13,546 Computed Tomography Scans.

Proper mechanical and rotational alignment plays an important role in achieving the success of the total knee arthroplasty (TKA). The purpose of the present study was to retrospectively determine with computed tomography (CT) the distal femoral valgus angle (DFVA) and femoral rotation angle (FRA). Our cohort included 13,546 CT scans of patients undergoing TKA.

Fresh osteochondral allografts in the knee: comparison of primary transplantation versus transplantation after failure of previous subchondral marrow stimulation.

Background: In most treatment algorithms, osteochondral allograft (OCA) transplantation is regarded as an alternative salvage procedure when other, previous reparative treatments have failed.

Purpose: To compare the outcomes of a retrospective matched-pair cohort of (1) primary OCA transplantation and (2) OCA transplantation after failure of previous subchondral marrow stimulation.

Study Design: Cohort study; Level of evidence, 3.

Tibial Slope is Highly Variable in Patients Undergoing Primary Total Knee Arthroplasty: Analysis of 13,546 Computed Tomography Scans.

The purpose of this study was to retrospectively measure with computed tomography (CT) the posterior tibial slope (PTS) to establish the average anatomy and the incidence of outliers in patients undergoing total knee arthroplasty (TKA). Our cohort included 13,546 arthritic patients: 8241 (61%) female; 5305 (39%) male. The average PTS angle was 7.

Fresh osteochondral allograft transplantation for isolated patellar cartilage injury.

Background: The treatment of patellofemoral cartilage injuries can be challenging. Osteochondral allograft (OCA) transplantation has been used as a treatment option for a range of cartilage disorders.

Purpose: To evaluate functional outcomes and survivorship of the grafts among patients who underwent OCA for patellar cartilage injuries.

Fresh osteochondral allograft transplantation for bipolar reciprocal osteochondral lesions of the knee.

Background: Osteochondral allograft (OCA) transplantation is an effective treatment option for chondral and osteochondral defects of the knee.

Hypothesis: Patients treated with OCAs for reciprocal bipolar lesions of the knee would demonstrate significant clinical improvement.

Study Design: Case series; Level of evidence, 4.

Outcomes in orthopedics and traumatology: translating research into practice.

Clinical research is focused in generating evidence that is feasible to be applicable to practitioners. However, translating research-focused evidence into practice may be challenging and often misleading. This article aims is to pinpoint these challenges and suggest some methodological safeguards, taking platelet-rich plasma therapies and knee osteochondral injuries as examples.

Autologous Osteochondral Transplantation to Treat Patellar Chondral Injuries.

Introduction: Autologous osteochondral transplantation for the treatment of patellar chondral injuries is a single-stage procedure through a single surgical approach that allows replacement of the chondral injury with an osteochondral plug that has the same cartilaginous hyaline characteristics as the site had before the injury.

Step 1 Preoperative Planning: Make radiographs (anteroposterior, lateral, and Merchant patellofemoral views), computed tomography scans, and magnetic resonance imaging (MRI) of the knee for an anatomic study and to determine cartilage lesion details.

Step 2 Perform Knee Arthroscopy And Lesion Identification: Classify and locate the cartilage lesion on the basis of the intraoperative arthroscopic knee evaluation.

Updates in biological therapies for knee injuries: anterior cruciate ligament.

There have been many advances in anterior cruciate ligament reconstruction (ACLR) techniques incorporating biological treatment. The aim of this review is to discuss the recent contributions that may enlighten our understanding of biological therapies for anterior cruciate ligament (ACL) injuries and improve management decisions involving these enhancement options. Three main biological procedures will be analyzed: bio-enhanced ACL repair, bio-enhanced ACLR scrutinized under the four basic principles of tissue engineering (scaffolds, cell sources, growth factors/cytokines including platelet-rich plasma, and mechanical stimuli), and remnant-preserving ACLR.

Level of evidence of knee surgery in national journal.

Select the studies related to knee surgery in the orthopedic literature published by Acta Ortopédica Brasileira (AOB) and the Revista Brasileira de Ortopedia (RBO) and classify them according to the levels of evidence. We selected all studies published from 2000 to 2011 related to knee surgery in AOB and RBO. The following categorization was adopted: level 1: systematic review; level 2: clinical trial; level 3: cohort studies and case-control; level 4: number of cases; level 5: narrative review and others.

ASSESSMENT OF PATELLAR HEIGHT MEASUREMENT METHODS FROM DIGITAL RADIOGRAPHY.

Objective: To analyze the most common methods for measuring patellar height and the impact of observer experience in correlations with the other observers using digital radiography.

Methods: Sixty digital radiographs of the knee in lateral view were analyzed by four observers: a physician in the second year of medical residence in orthopedics (R2); a physician in the third year of medical residence in orthopedics (R3); an orthopedic surgeon who was a specialist in knee surgery (SK); and a radiologist who was a specialist in musculoskeletal radiology (SR). The indices used were: Insall-Salvati (IS), Blackburne-Peel (BP), Caton-Deschamps (CD) and modified Insall-Salvati (ISM).

Shoulder functional ratio in elite junior tennis players.

Objective: To evaluate shoulder rotation strength and compare the functional ratio between shoulders of elite junior tennis players.

Design: This cross-sectional study evaluated muscular rotation performance of 40 junior tennis players (26 male and 14 female) with an isokinetic dynamometer.

Main Outcome Measures: Strength variables of external (ER) and internal rotators (IR) in concentric and eccentric modes were considered.