12++Appendicular+Bone+-Landmarks

Skeleton Structure

  • The skeleton is divided into:

    • Axial Skeleton:

      • Includes the skull, vertebral column, and rib cage.

      • Hyoid Bone: A bone found in the neck, part of the axial skeleton.

    • Appendicular Skeleton:

      • Comprises the bones of the limbs and the pelvic girdle.

      • Identified in diagrams by the yellow or dark brown color.

      • Example: The clavicle (collarbone) is part of the appendicular skeleton.

Key Bones and Features

  • Clavicle:

    • Understand the lateral end (Acromial end), medial end (Sternal end), and their positions.

    • Knowledge of its anatomical position is crucial for identification.

  • Scapula (Shoulder Blade):

    • Important landmarks include:

      • Spinous fossa

      • Supraspinous fossa

      • Infraspinous fossa

      • Glenoid cavity

      • Coracoid process

      • Acromion

      • Scapular notch

  • Humerus:

    • Key features to know:

      • Head of the humerus

      • Anatomical neck and surgical neck

      • Greater and lesser tubercles

      • Deltoid tuberosity

      • Olecranon fossa

      • Capitulum

Forearm Bones

  • Radius:

    • Key landmarks include:

      • Head of the radius

      • Neck of the radius

      • Radial tuberosity

      • Styloid process of the radius

  • Ulna:

    • Important features:

      • Olecranon process

      • Styloid process of the ulna

Hand Anatomy

  • Carpal Bones:

    • Total of 8 carpal bones; focus on the trapezium (important for saddle joint with the first metacarpal).

  • Metacarpals:

    • Total of 5 metacarpals, indexed from the thumb as 1-5.

  • Phalanges:

    • 2 phalanges in the thumb, 3 phalanges in each of the other fingers, summing to 14 phalanges in one hand.

Hip Anatomy

  • Coxal Bone (Hip Bone):

    • Composed of three parts:

      • Ilium

      • Ischium

      • Pubis

    • Recognize features such as:

      • Greater sciatic notch

      • Ischial spine

      • Lesser sciatic notch

      • Ischial tuberosity (where body weight is carried when sitting)

  • Acetabulum: The socket of the hip bone.

Pelvis and Gender Differences

  • Differences in male and female hips:

    • Female pelvis is generally wider with a broader angle.

    • Know the implications for childbirth and pelvic examinations.

Femur Anatomy

  • Right and Left Femur:

    • Important landmarks to know:

      • Greater and lesser trochanters

      • Medial and lateral epicondyles

      • Linea aspera

  • Patella (Kneecap):

    • Considered a sesamoid bone, lacks periosteum.

Lower Leg Anatomy

  • Tibia and Fibula:

    • Key features:

      • Tibial tuberosity

      • Head of the fibula and lateral malleolus

      • Medial malleolus

      • Soleal line

Foot Anatomy

  • Tarsal Bones:

    • Total of 7 tarsal bones, know calcaneus, talus, and navicular.

  • Metatarsals:

    • Total of 5 in the foot.

  • Phalanges in Foot:

    • Total of 14 phalanges in one foot, with 2 in the big toe and 3 in others.