Unhappy triad
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Unhappy triad
MS1 Foundations Midterm
MS1 Foundations Midterm
Human development days 1-4
Human development days 4-7
Human development week 2
Human development week 3
Ectoderm
Endoderm
Mesoderm
Development of twins
Xeroderma pigmentosum
Polymerase chain reaction (PCR) and reverse-transcriptase PCR (RT-PCR)
Gel electrophoresis and genetic testing
Karyotyping
Fluorescence in situ hybridization
Down syndrome (Trisomy 21)
Edwards syndrome (Trisomy 18)
Patau syndrome (Trisomy 13)
Fragile X syndrome
Huntington disease
Turner syndrome
Klinefelter syndrome
Prader-Willi syndrome
Angelman syndrome
Hereditary spherocytosis
Sickle cell disease (NORD)
Alpha-thalassemia
Beta-thalassemia
Glucose-6-phosphate dehydrogenase (G6PD) deficiency
Blood histology
Blood components
Erythropoietin
Platelet plug formation (primary hemostasis)
Coagulation (secondary hemostasis)
Clot retraction and fibrinolysis
Iron deficiency anemia
Microcytic anemia: Pathology review
Sideroblastic anemia
Anemia of chronic disease
Lead poisoning
Hemolytic disease of the newborn
Autoimmune hemolytic anemia
Extrinsic hemolytic normocytic anemia: Pathology review
Intrinsic hemolytic normocytic anemia: Pathology review
Anemia: Clinical
Paroxysmal nocturnal hemoglobinuria
Aplastic anemia
Non-hemolytic normocytic anemia: Pathology review
Macrocytic anemia: Pathology review
Megaloblastic anemia
Warm autoimmune hemolytic anemia and cold agglutinin (NORD)
Thrombocytopenia: Clinical
Spondylolysis
Vitamin B12 deficiency
Folate (Vitamin B9) deficiency
Spina bifida
Spinal disc herniation
Von Willebrand disease
Myelodysplastic syndromes
Myelofibrosis (NORD)
Sickle cell disease: Clinical
Heme synthesis disorders: Pathology review
Oxygen-hemoglobin dissociation curve
Anatomy of the tibiofibular joints
Anatomy of the knee joint
Joints of the ankle and foot
Cartilage histology
Bone histology
Cartilage structure and growth
Unhappy triad
Spondylolisthesis
Sciatica
Muscular dystrophy
Back pain: Pathology review
Anatomy of the vertebral canal
Routine prenatal care: Clinical
Spondylosis
Disseminated intravascular coagulation
Immune thrombocytopenia
Thrombotic thrombocytopenic purpura
Hemophilia
Vitamin K deficiency
Blood products and transfusion: Clinical
Platelet disorders: Pathology review
Inflammation
Hemolytic-uremic syndrome
Bleeding disorders: Clinical
Key Takeaways
An unhappy triad, also known as O'Donoghue's triad, is a common injury that occurs in the knee joint. It involves damage to the anterior cruciate ligament (ACL), medial collateral ligament (MCL), and medial meniscus. The injury usually occurs as a result of a sudden forceful twist or impact on the knee joint, such as during a sports activity. The lateral meniscus may also be involved in some cases. This injury is typically treated with surgery and physical therapy.