The bones of the hand consist of the carpals, metacarpals, and phalanges, forming a complex structure that allows fine motor movements, grasping, and dexterity. The eight carpal bones form the wrist, connecting the forearm to the hand, while the five View Diagram Overview of the Bones of the Hand Carpals Metacarpals and Phalanges
The menisci of the knee are crescent-shaped fibrocartilaginous structures that deepen the tibial articular surfaces. The medial meniscus is C-shaped and more firmly attached, making it more prone to injury. The lateral meniscus is more circular and relatively mobile. They View Diagram The Menisci of the Knee Joint Superior View
The lumbar spine consists of five large vertebrae (L1L5) forming a lordotic curve in the lower back. These vertebrae provide stability, bear body weight, and allow flexion, extension, and limited rotation. Intervertebral discs act as shock absorbers, while ligaments and View Diagram Lumbar Spine
The liver ligaments, including the coronary, falciform, and triangular ligaments, anchor the organ to the diaphragm and anterior abdominal wall. These folds of peritoneum stabilize the liver while allowing some mobility. They also contain vessels and lymphatics essential for hepatic View Diagram Ligaments of the Liver Coronary Falciform Triangular
The knee joint is a complex hinge joint, reinforced by multiple bursae that reduce friction between bones, tendons, and muscles. On sagittal view, the joint shows articulations between the femur, tibia, and patella, with the menisci cushioning the tibiofemoral interface. View Diagram Sagittal View of the Knee Joint Diagram of the Knee Bursae
The elbow joint consists of articulations between the humerus, radius, and ulna, allowing for flexion, extension, and rotation of the forearm. Key structures include the trochlea, capitulum, olecranon, and radial head, which interact to provide smooth and stable movement. Ligaments View Diagram Articulations of the Elbow Joint
Cleidocranial dysplasia is a genetic condition affecting bone and tooth development. It can result in delayed tooth eruption and presence of supernumerary teeth.
The talus articulates with the tibia, fibula, and calcaneus in the ankle joint, transmitting weight from the leg to the foot. Knowledge of talar anatomy is essential for orthopedic surgeons, radiologists, and medical students in managing fractures, arthritis, or reconstructive View Diagram The Talus in the Ankle Joint
The abdominal aorta gives off multiple branches supplying the gastrointestinal tract, kidneys, adrenal glands, and pelvic organs. Key branches include the celiac trunk, superior and inferior mesenteric arteries, renal arteries, and gonadal arteries. Knowledge of these branches is crucial for View Diagram Branches of the Abdominal Aorta
The anterior surface of the distal femur forms part of the knee joint and supports patellar articulation. This anatomy diagram of the anterior surface of the distal femur highlights the patellar surface and condylar structure. It demonstrates how the patella View Diagram Anterior Surface of the Distal Portion of the Femur
The trimalleolar fracture involves the lateral, medial, and posterior malleoli of the ankle, often destabilizing the joint and impairing mobility. These fractures usually occur due to high-energy trauma, such as falls or sports injuries, and commonly require open reduction and View Diagram Trimalleolar Fracture of the Ankle Joint
The sacrum is a triangular bone formed from fused vertebrae, articulating with the pelvis and supporting weight transfer to the lower limbs. Knowledge of sacral anatomy is essential for orthopedic surgeons, obstetricians, and medical students in spinal surgery, pelvic procedures, View Diagram Overview of the Sacrum
Radiographs of scoliosis reveal abnormal lateral curvature of the spine with vertebral rotation, commonly in thoracic or thoracolumbar regions. Severity is measured using the Cobb angle, guiding treatment decisions. Knowledge of scoliosis radiographic features is essential for orthopedic surgeons, radiologists, View Diagram Radiograph of Scoliosis of the Spine
Calcaneal fractures are visible on radiographs as disruption of the heel bone, often associated with axial loading injuries. Knowledge of fracture patterns is essential for orthopedic surgeons, radiologists, and medical students in managing conservative or surgical treatment. Understanding calcaneal anatomy View Diagram Radiograph of a Calcaneal Fracture
The facial skeleton is composed of multiple bones including the maxilla, mandible, zygomatic, nasal, and lacrimal bones, providing structure and support for the face. These bones contribute to chewing, breathing, vision, and expression. Knowledge of facial bone anatomy is crucial View Diagram Bones of the Facial Skeleton
The median nerve in the hand gives off branches including the recurrent branch to the thenar muscles and digital cutaneous branches to the fingers. These branches provide motor and sensory innervation essential for hand function, grip, and dexterity. Knowledge of View Diagram Branches of the Median Nerve in the Hand
The superficial temporal artery is a terminal branch of the external carotid artery, giving off frontal and parietal branches that supply the scalp, temple, and lateral face. Knowledge of its course and branches is essential for surgeons, dermatologists, and medical View Diagram Branches of the Superficial Temporal Artery
Major fontanelles in the infant skull include the anterior and posterior fontanelles. The anterior fontanelle, located at the junction of the coronal and sagittal sutures, is diamond-shaped and closes around 18 months. The posterior fontanelle lies at the junction of View Diagram Major Fontanelles and Sutures of the Skull
The membranous labyrinth is a fluid-filled structure within the bony labyrinth of the inner ear. It contains endolymph and includes the cochlear duct, utricle, saccule, and semicircular ducts. These structures are responsible for hearing and balance. Damage may result in View Diagram The Membranous Labyrinth
Blowout fractures of the orbital floor involve disruption of the inferior orbital wall, often due to blunt trauma to the eye. CT imaging identifies the fracture, orbital content herniation, and potential muscle entrapment, which can cause diplopia or restricted eye View Diagram CT Scan of a Blowout Fracture of the Inferior Wall
