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Lumbrical Muscles and Bursae, Spaces, and Sheaths: Schema Anatomy


Lumbrical Muscles and Bursae, Spaces, and Sheaths: Schema Anatomy
Thenar space, Midpalmar space (Synovial) tendon sheaths of fingers, Usual arrangement, Intermediate bursa (communication between common flexor sheath [ulnar bursa] and tendinous sheath of flexor pollicis longus [radial bursa]), 

Flexor digitorum profundus tendons 1st and 2nd lumbrical muscles (unipennate), Lumbrical tendons insert into extensor expansion system, Common variation 3rd and 4th lumbrical muscles (bipennate), Proximal lumbrical tendons arise from flexor digitorum profundus tendons, Flexor digitorum superficialis tendons (cut), Lumbrical muscles: schema, Palmar ligaments (palmar plates) A2 C1 A3 C2 A4 C3 A5, Tendinous sheath of flexor pollicis longus muscle, Common flexor sheath, Lumbrical muscles (in fascial sheaths) (Synovial) tendon sheath, Tendons of flexor digitorum superficialis and profundus muscles
Lumbrical Muscles and Bursae, Spaces, and Sheaths: Schema Anatomy

Note: Flexor digitorum superficialis and profundus tendons encased in synovial sheaths are bound to phalangeal bones by fibrous digital sheaths made up of alternating strong anular (A) and weaker cruciform (C) parts.

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