The anteromedial region of the knee is little explored in the literature and may play an important role in anteromedial rotatory instability. The purpose of this study is to describe a ligamentous structure in the anteromedial region of the knee identified in a series of anatomical dissections of cadaveric specimens. Twenty‐one cadaveric knees were dissected to study the medial compartment. Exclusion criteria were signs of trauma, previous surgery, signs of osteoarthritis, and poor preservation state. The main structures of this region were identified during medial dissection. After releasing the superficial medial collateral ligament of the tibia, the anterior oblique ligament (AOL) was isolated. The morphology of the structure and its relationship with known anatomical parameters were determined. For the statistical analysis, the means and standard deviations were calculated for continuous variables. A 95% confidence interval was defined as significant. Student's t‐tests were used for continuous variables. After dissection, a distinct ligamentous structure (AOL) was found in the medial region of the knee. This structure was found in 100% of the cases, was located extracapsularly and originated in the anterior aspect of the medial epicondyle, running obliquely toward the tibia. When crossing the joint, the ligament presented a fan‐shaped opening, exhibiting a larger area at the tibial insertion. The AOL had a mean thickness of 6.83 ± 1.51 mm at its femoral origin and 13.39 ± 2.64 at its tibial insertion. It had a significantly (p = 0.0001) longer mean length with the knee at 90° of flexion (35.27 ± 6.59 mm) than with the knee in total extension (27.89 ± 5.46 mm), indicating that the ligament is tensioned in flexion. A new structure was identified in the anteromedial compartment of the knee with a ligamentous appearance. Further studies are necessary to identify its importance on knee stability. This study demonstrates the anatomy of a new medial structure of the knee. As a result, there will be a better understanding of the stability of the knee.

Objective: The present study aimed to retrospectively evaluate musculoskeletal injuries in elite Brazilian wrestlers. Methods: Ninety-five wrestlers completed a structured questionnaire to assess wrestling injury history and clinical and demographic data. Results: Eighty one athletes (85,3%) informed 145 lesions. The most commonly injured body regions were knee (25,5%), shoulder (20%), thigh (15,2%) and ankle (14,5%). Sprains (34,5%) and muscle lesions (30,4%) were the most common injuries. Surgical treatment was performed in 9% of the lesions and the majority of these lesions (61,5%) were located in the lower limbs. Conclusions: Musculoskeletal lesions are common in wrestling athletes and the lower limbs are the most frequently injured site.

Resumo Objetivo Descrever todas as estruturas ligamentares, capsulares, tendinosas e marcos ósseos da região medial do joelho, assim como uma nova estrutura ligamentar identificada em uma série de dissecções anatômicas de espécimes cadavéricos. Métodos Vinte joelhos de cadáveres foram dissecados para estudar o compartimento medial. As principais estruturas dessa região foram identificadas durante a dissecção. A morfologia das estruturas e sua relação com parâmetros anatômicos conhecidos foram determinados tanto de forma qualitativa quanto de forma quantitativa. Os dados coletados foram analisados e interpretados por meio de estatística descritiva. Resultados Na dissecção de todos os espécimes, foram identificadas todas as estruturas ligamentares já descritas anteriormente no estudo anatômico da porção medial do joelho, e foram realizadas medidas objetivas que podem auxiliar como parâmetros para a reconstrução ligamentar cirúrgica. Foram observados e descritos, ainda, ao se desprender o ligamento colateral medial superficial, uma proeminência óssea imediatamente distal à sua inserção tibial proximal, uma bursa abaixo do ligamento, na qual o mesmo não se mostrava inserido, assim como uma estrutura ligamentar localizada extracapsularmente e com origem na face anterior do epicôndilo medial, seguindo obliquamente em direção à tíbia, aos quais foram dados os nomes, respectivamente, de tubérculo interinsercional, bursa interinsercional e ligamento oblíquo anterior. Conclusão Além da descrição e medida das estruturas e parâmetros já existentes no estudo anatômico da porção medial do joelho, foi possível a descrição de três novas estruturas: o tubérculo interinsercional a bursa interinsercional e o ligamento oblíquo anterior, ainda não descritos na literatura. Essas estruturas foram encontradas em todas as dissecções realizadas.

Osteogenesis imperfecta (OI) is a hereditary connective tissue disorder that leads to bone weakness and deformities, especially in the spine, which can lead to poor outcomes.The aim of this study was to find patterns and risk factors in spinal deformities in patients with OI.In a retrospective study, 70 patients with OI were selected. Radiographs of the spine were evaluated. We observed the presence or absence of the following changes: biconcave vertebrae, chest and vertebral deformities, unilateral rib, and thoracolumbar kyphosis. The greater curve was considered the primary one, and the secondary curve considered compensatory.In the study sample, we observed that the patients’ ages ranged between 7 and 50 years, with a mean equal to 13 years, and 76% had scoliosis. In 68% of cases the main curve in the thoracic region was observed with the convexity to the right.The following was found in patients with OI: scoliosis, biconcave vertebrae, vertebral and chest deformity, unilateral rib, and thoracolumbar kyphosis. The thoracolumbar kyphosis is highly associated with thoracic hypokyphosis in patients with OI.

Dislocation of the femoral biceps tendon is rare and is described clinically in the literature as a lateral pain in the knee. It was initially reported as an anomalous insertion of the long head of the femoral biceps. Subsequently, it was found to be caused by abnormal mobility of the tendon over the prominence of the fibular head at certain angles of knee flexion. The objective of the present report was to describe and discuss a condition of lateral knee pain in a swimmer who started to present subluxation of the femoral biceps during sports practice, which incapacitated him from taking part in trials and competitions. The case is discussed in the light of the literature surveyed; the likelihood that the etiology for the trauma leading to this condition was repetition; and the surgical treatment instituted, which led to excellent results and the patient's return to his habitual sports practice.