BONES OF THE UPPER LIMB

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BONES OF THE UPPER LIMB. The Resting Arm … by Vinod More. 03. January. 2014 Friday. Kaan Yücel M.D., Ph.D . UPPER LIMB. 1. %. 1. 66.5. 137. 64. 1. Radius. Ulna. 2. Wrist. Carpals. 8. MANUS. 5. 14. UPPER LIMB. Efficiency of hand function - PowerPoint PPT Presentation

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BONES OF THE UPPER LIMB

The Resting Arm by Vinod More Kaan Ycel M.D., Ph.D.03.January.2014 Friday12UPPER LIMB

RadiusUlnaWristCarpals

MANUS6413766.5%11218514

Efficiency of hand function ability to place it in the proper position by movements at the upper limb joints

3UPPER LIMB

associated with lateral aspect of the lower portion of the neck thoracic wall

Suspended from the trunk by muscles & a small skeletal articulation between clavicle & sternum: sternoclavicular joint4UPPER LIMB

5proximal segment of the limb overlaps parts of the trunk (thorax and back) and lower lateral neck

Shoulder

6Pectoral (shoulder) grdle

bony ring, posteriorly formed by the scapulae and clavicles anteriorly by formed by the manubrium of the sternum

7ARM -BRACHIUMFirst segment of the free upper limb & longest segment of the limb Between shoulder and elbowAnterior & posterior segments of the arm around the humerus

8Second longest segment of the limb Between elbow wrist & Includes anterior & posterior regions overlying the radius and ulna

Forearm-AntebrachIum

9part of the upper limb distal to the forearm

formed around the carpus, metacarpus, and phalanges.

composed of the wrist, palm, dorsum of hand, and digitsHand-manus

10BONES OF THE PECTORAL GIRDLECLAVICLE

SCAPULA

11CLAVICLE

Kprck kemiithe only bony attachment between the trunk and the upper limb

12CLAVICLE

Kprck kemii

the only bony attachment between the trunk and the upper limbpalpable along its entire length S-shaped contourforward-facing convex part medial forward-facing concave part lateral13CLAVICLE

medial sternal end articulates with manubrium sternoclavicular joint

lateral end acromial endarticulates with acromion of scapula acromioclavicular joint

14CLAVICLE

Inferior surface-near the acromial endconoid tubercle medial part of-trapezoid line lateral part of-coracoclavicular ligament

Medial 1/3 of the clavicles shaftsubclavian groove subclavius muscle

More mediallyimpression for the costoclavicular ligamentbinding 1st rib to clavicleLimiting elevation of the shoulder

15Functions of the Clavicle

A moveable, rigid support limb has maximum freedom of motion.

A boundary of the cervico-axillary canal (passageway between the neck and the arm), protection to the neurovascular bundle supplying the upper limb.

Transmits shocks from the upper limb to the axial skeleton.

16SCAPULAShoulder blade / Krek kemii

large, flat triangular bone lies on the posterolateral aspect of the thoraxbetween 2nd-7th ribs

17SCAPULAAnterior view

three angles lateral, superior, and inferiorthree borders superior, lateral, and medialtwo surfaces costal and posteriorthree processes AcromionSpineCoracoid process

18SCAPULAPosterior view

AcromionSupraspinous fossaInfraspinous fossaSpine of scapulaSuprascapular notch19SCAPULALateral view

Glenoid cavitySupraglenoid tubercleInfraglenoid tubercleAcromionCoracoid process20BONE OF THE ARMHUMERUS

21HUMERUSthe largest bone in the upper limb

articulates w/

Scapula Glenohumeral (Shoulder) joint

Radius & Ulna elbow joint

22HUMERUSIn cross-section, shaft triangular with: anterior, lateral, & medial bordersanterolateral, anteromedial, posterior surfaces

Intermuscular septaattach to medial & lateral borders.

23HUMERUSproximal end

HeadNeck-Anatomical neck-Surgical neckGreater tubercleLesser tubercleIntertubercular groove

24HUMERUSshaft

Deltoid tuberosityMedial and lateral supraepicondylar (supracondylar) ridgesRadial groove

25HUMERUSdistal end

Anterior viewPosterior viewTrochleaCapitilumOlecranon fossaCoronoid fossaMedial epicondyleLateral epicondyleRadial fossa

27BONES OF THE FOREARMULNAmedial and longer of the two forearm bones

RADIUS

lateral and shorter of the two forearm bones

MORE IMAGES99-103

28 For articulation with the humerusOlecranonCoronoid process Radial notch @ the lateral surface articulation with head of radius

ULNAproximal endarticulation with humerus proximally head of the radius laterally

Tuberosity of ulnaInferior to coronoid process

Trochlear notch Semilunar notch

29ULNAshaft

triangular in cross-section and has: three borders anterior, posterior, and interosseousthree surfaces anterior, posterior, and medialSupinator crestInferior to radial notch @ lateral surfaceSupinator fossaOn the lateral surface, under the radial notchBroad superiorly, continuous with large proximal end Narrow distally to form a small distal head

Supinator muscle

30

ULNAdistal endHead of the ulna

Ulnar styloid process

Ulna does not reach and participate to the radiocarpal (wrist) joint!

31RADIUSproximal end & shaft

A short headNeckRadial tuberosityOblique line

The shaft of the radius in contrast to that of the ulnagradually enlarges triangular in cross-section, with: three borders anterior, posterior, and interosseousthree surfaces anterior, posterior, and lateral

32RADIUSdistal end

Dorsal tubercle of the radiusRadial styloid processUlnar notch

SHAFTtriangular in cross-section, with: three borders anterior, posterior, and interosseousthree surfaces anterior, posterior, and lateral

33BONES OF THE HAND

MORE IMAGES104--108

34BONES OF THE HAND

BONES OF THE HAND

Proximal row of carpal boneslateral to medialScaphoid Lunate Triquetrum PisiformDistal row of carpal boneslateral to medialTrapeziumTrapezoidCapitate Hamate

I am sailing with my little boat on a summer nightThe moon is crescentI am filling my three-cornered hat with beas falling off the sky Table(Little)HeadOn a Hook

BONES OF THE HAND

Proximal row of carpal boneslateral to medialScaphoid Lunate SeLoTyP Triquetrum PisiformDistal row of carpal boneslateral to medialTrapezium ToToCu HasanTrapezoidCapitate HamateSheLooksTooPretty;TryToCatchHer

37BONES OF THE HAND

Carpal arch The carpal bones do not lie in a flat plane; rather, they form an arch, whose base is directed anteriorly.

lateral side of this base formed by tubercles of the scaphoid and trapezium.medial side formed by pisiform & hook of hamate.

basehead