A Novel Ligamentous Complex in the Anteromedial Region of the Knee: A Cadaveric Study.

Background: The medial knee structures have a primary role in stabilizing valgus and rotational stress, which makes them important in assessing the ligament-injured knee globally and choosing the most adequate treatment. Purpose: To conduct a layer-by-layer dissection of the knee's anteromedial side and provide a qualitative and quantitative description of the anatomy and histology of a ligament in the anteromedial region of the knee, which we have termed the anterior oblique ligament (AOL). Also, to describe the AOL relationship with what we have termed the medial cross-a ligament complex that stabilizes the medial pivot. Study Design: Descriptive laboratory study. Methods: A total of 35 fresh-frozen knees from transfemoral amputations that were exclusively performed for vascular reasons were dissected. Structures were identified after meticulous dissection, respecting the same protocol, measured with a digital caliper rule, and histologically studied for data. Results: The AOL was found in all dissected knees, with a mean length of 31.47 ± 5.06 mm. This structure presented a ligament histology with densely organized collagen fibrils. The medial cross was represented by the superficial medial collateral ligament, AOL (anterior region), and posterior oblique ligament. Conclusion: This study demonstrated the presence of a ligament in the anteromedial region of the knee, termed the AOL. This structure was in the anterior part of a ligament complex-the medial cross. Clinical Relevance: Studying and revisiting the medial compartment can provide important information for understanding joint instability and promoting better results in ligament reconstructions.

Analysis on the serum levels of the biomarker CTX-II in professional indoor soccer players over the course of one season.

OBJECTIVE: The aim of this study was to analyze the blood serum levels of CTX-II in professional indoor soccer players, at three different times during one season: at the start of the pre-season, four months later (a time that marks the middle of the season) and at the end of the season. METHODS: Fourteen male soccer players of mean age 19 years were included. Blood samples of 3 mL were collected from each individual. The samples were analyzed by means of Elisa tests. RESULTS: There was a significant increase in the serum level of CTX-II in the indoor soccer players, from the beginning to the end of the season (p < 0.01). CONCLUSION: These data suggest that joint degradation had occurred in these soccer players, by the end of this period. It is evident that further studies are needed, with methodological rigor, so as to make an effective contribution toward precise elucidation of the etiology of this osteoarthritis and its relationship with the biomarkers, as a tool for early diagnosis.

OBJETIVO: Analisar os níveis séricos sanguíneos de CTX-II em atletas profissionais de futebol de salão, em três momentos distintos durante uma temporada: no início da pré-temporada, quatro meses após (período que marca o meio da temporada) e no fim da temporada. MÉTODOS: Foram incluídos 14 atletas do gênero masculino e média de idade de 19 anos. Foram coletados 3 mL de sangue de cada indivíduo. As amostras foram analisadas pelo teste do tipo Elisa. RESULTADOS: Houve aumento significativo dos níveis séricos de CTX-II nos atletas de futebol de salão, comparando-se o início e o fim de uma temporada (p < 0.01). CONCLUSÃO: Esses dados sugerem a ocorrência de degradação articular nos atletas, ao término desse período. Fica evidente a necessidade de futuros estudos, com rigor metodológico, que possam contribuir efetivamente para a elucidação precisa da etiologia da OA e sua relação com os biomarcadores como instrumento de diagnóstico precoce.

LATERAL PAIN IN AN ATHLETE'S KNEE: A RARE CASE OF DISLOCATION OF THE FEMORAL BICEPS TENDON.

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.