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  2. Shoulder joint - Wikipedia

    en.wikipedia.org/wiki/Shoulder_joint

    From 90-180 degrees it is the trapezius and the serratus anterior. Adduction is carried out by the pectoralis major, latissimus dorsi, teres major and the subscapularis. Horizontal abduction and horizontal adduction of the shoulder (transverse plane) Medial and lateral rotation of the shoulder (also known as internal and external rotation).

  3. Shoulder - Wikipedia

    en.wikipedia.org/wiki/Shoulder

    Medial rotation of the arm [16] Medial rotation of the arm is most easily observed when the elbow is held at a 90-degree angle and the fingers are extended so they are parallel to the ground. Medial rotation occurs when the arm is rotated at the shoulder so that the fingers change from pointing straight forward to pointing across the body.

  4. List of bones of the human skeleton - Wikipedia

    en.wikipedia.org/wiki/List_of_bones_of_the_human...

    It is composed of 270 bones at the time of birth, [2] but later decreases to 206: 80 bones in the axial skeleton and 126 bones in the appendicular skeleton. 172 of 206 bones are part of a pair and the remaining 34 are unpaired. [3] Many small accessory bones, such as sesamoid bones, are not included in this.

  5. Bone malrotation - Wikipedia

    en.wikipedia.org/wiki/Bone_malrotation

    Bone malrotation refers to the situation that results when a bone heals out of rotational alignment from another bone, or part of bone. It often occurs as the result of a surgical complication after a fracture where intramedullary nailing (IMN) occurs, [ 1 ] especially in the femur and tibial bones, but can also occur genetically at birth.

  6. Anatomical terms of motion - Wikipedia

    en.wikipedia.org/wiki/Anatomical_terms_of_motion

    External rotation (lateral rotation or extorsion) is rotation away from the center of the body, [22] carried out by external rotators. Internal and external rotators make up the rotator cuff , a group of muscles that help to stabilize the shoulder joint .

  7. Pivot joint - Wikipedia

    en.wikipedia.org/wiki/Pivot_joint

    In animal anatomy, a pivot joint (trochoid joint, rotary joint or lateral ginglymus) is a type of synovial joint whose movement axis is parallel to the long axis of the proximal bone, which typically has a convex articular surface.

  8. Rotationplasty - Wikipedia

    en.wikipedia.org/wiki/Rotationplasty

    In the actual procedure, the bone affected by the tumor, as well as a small part of the healthy femoral and occasionally tibia bone, is removed. A portion of the leg removed; the ankle joint is then turned 180 degrees and is reattached to the thigh. They are held together by plates and screws until they have healed naturally.

  9. Bone - Wikipedia

    en.wikipedia.org/wiki/Bone

    A bone is a rigid organ [1] that constitutes part of the skeleton in most vertebrate animals. Bones protect the various other organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility. Bones come in a variety of shapes and sizes and have complex internal and external ...