Wrist & Hand Joints (Radiocarpal, Intercarpal, CMC, MCP & IP) | Anatomy скачать в хорошем качестве

Wrist & Hand Joints (Radiocarpal, Intercarpal, CMC, MCP & IP) | Anatomy

Content: 00:00 Introduction & Content 00:46 Joints of the Wrist 01:02 Radiocarpal Joint 03:48 Intercarpal Joint 04:20 Midcarpal Joint 05:19 Joints of the Hand 05:43 Carpometacarpal Joints (CMC) 06:30 Intermetacarpal Joints 06:49 Metacarpophalangeal Joints (MCP) 07:20 Interphalangeal Joints (IP, PIP, DIP) 08:04 Joints Summary 08:13 Other large ligaments of the hand and wrist 09:34 Tips 09:43 Outro & Next Topic ---------- 🫀Help me make more free educational content:    / @taimtalksmed   📲Other Links: Website: https://taimtalksmed.com/ Instagram:   / taimtalksmed   Discord:   / discord   ------------ This video is about the joints of the wrist and hand. In this video I break down every major articulation from the wrist to the fingertips - their anatomy, movement, and supporting ligaments. Radiocarpal joint (Articulatio radiocarpea) • Formed by the carpal articular surface of the radius and the articular disc (part of the triangular fibrocartilage complex) • Articulates with: Scaphoid (os scaphoideum), Lunate (os lunatum), and Triquetrum (os triquetrum) • Type: Ellipsoid (biaxial) joint • Movements: Flexion (palmar flexion), extension (dorsiflexion), abduction (radial deviation), adduction (ulnar deviation) • Ligaments:  – Palmar radiocarpal ligament  – Palmar ulnocarpal ligament  – Dorsal radiocarpal ligament  – Dorsal ulnocarpal ligament  – Radial collateral ligament  – Ulnar collateral ligament • Capsule: Fibrous capsule reinforced by synovial membrane Intercarpal joints (Articulationes intercarpeae) • Between neighboring carpal bones in each row • Type: Plane joints • Ligaments:  – Palmar intercarpal ligaments  – Dorsal intercarpal ligaments  – Interosseous intercarpal ligaments • Function: Stabilize the carpal arch and assist in force transmission during load-bearing tasks Midcarpal joint (Articulatio mediocarpea) • Located between the proximal row and distal row of carpal bones • Not a single joint cavity; rather, a composite joint with an S-shaped contour • Movements: Augments wrist extension and radial/ulnar deviation • Ligaments: Shares palmar and dorsal intercarpal ligaments with adjacent joints Carpometacarpal joints (Articulationes carpometacarpeae) • Between distal carpal row and bases of metacarpals (ossa metacarpi) • Joints of digits II–V: Plane joints with limited motion • Thumb (CMC I):  – Saddle joint  – Movements: Flexion, extension, abduction, adduction, opposition • Ligaments:  – Palmar and dorsal carpometacarpal ligaments Intermetacarpal joints (Articulationes intermetacarpeae) • Between bases of metacarpals II–V • Ligaments:  – Dorsal metacarpal ligaments  – Palmar metacarpal ligaments  – Interosseous metacarpal ligaments • Function: Stabilize hand posture and allow slight gliding Metacarpophalangeal joints (Articulationes metacarpophalangeae) • Between heads of metacarpals and bases of proximal phalanges (phalanges proximales) • Type: Condyloid joints (biaxial) • Movements: Flexion, extension, abduction, adduction, circumduction • Ligaments:  – Medial and lateral collateral ligaments  – Palmar ligaments (volar plates)  – Deep transverse metacarpal ligament Interphalangeal joints (Articulationes interphalangeae) • Digits II–V:  – Proximal interphalangeal joint (PIP)  – Distal interphalangeal joint (DIP) • Thumb:  – One interphalangeal joint only • Type: Hinge joints (uniaxial) • Ligaments:  – Medial and lateral collateral ligaments  – Palmar ligaments (volar plates) • Function: Allow flexion and extension with strong lateral support Additional ligamentous and fascial structures (not primary joint stabilizers): • Palmar aponeurosis – Protects flexor tendons and stabilizes soft tissue during grip • Superficial transverse metacarpal ligament – Located at distal edge of palmar aponeurosis • Palmar carpal ligament – Forms superficial component of the flexor retinaculum Clinical notes covered: • TFCC injury • Thumb CMC osteoarthritis • Ligament sprains and dislocations • PIP joint instability and hyperextension • Volar plate injury • MCP collateral ligament rupture (Gamekeeper’s thumb) • Joint movement during grasp, grip, and fine motor control Want to test your knowledge with a quiz or download a full visual study note PDF of this lecture? Head to my website to find: • Full anatomy PDF • Quiz questions • Organized anatomy lectures by region PDF available soon. Link: https://taimtalksmed.com/ Sources: • Kozlowski, T. (2017). Memorix Anatomy, 2nd ed. • Standring, S. (2020). Gray’s Anatomy, 42nd ed. • Platzer, W. (2004). Color Atlas of Human Anatomy Vol. 1: Locomotor System • White TD, Folkens PA. (2005). The Human Bone Manual Programs used: Complete Anatomy, Powerpoint, Canva, Camtasia