Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
58 Cards in this Set
- Front
- Back
|
PALMER APONEUROSIS
|
PROXIMAL (Apex of Traingle)
Continuous with the flexor retinaculum and the palmaris longs tendon DISTAL 4 Longitudinal bands attach to the bases of the proximal phalanges and join the fibrous digital sheaths |
|
COMPARTMENTS
Name them |
Thenar
Hypothenar Central ADductor Interosseus |
|
COMPARTMENT
Muscles in Thenar |
3 Intrinsic Muscles
1) ABductor Pollicis Brevis 2) Flexor Pollicis Brevis 3) Opponens Pollicis Innervated By "recurrent branch of the median nerve" C8-T1 |
|
|
COMPARTMENT
Muscles in the Hypothenar |
3 Intrinsic Muscles
1) ABductor Digiti Minimi 2) Flexor Digiti Minimi Brevis 3) Opponens Digiti Minimi Innervated by Deep Brach of the Ulnar Nerve C8-T1 |
|
COMPARTMENT
Muscles in the Central |
2 Groups
1) Lumbricals 2) Long Flexor Tendons |
|
|
COMPARTMENT
Muscles of the ADductor |
Adductor Pollicis
|
|
COMPARTMENT
Muscles of the Interosseus |
Interossei
|
|
|
Describe the Actions of the Thumb?
AD & Abduction Flexion and Extension Opposition |
ABduction - Perpindicular Plane - away from the palm - ABPL & ABPB
ADduction Perpindicular plane towards the palm - ADP Flexion: Parallel to the palm - thumb toward pinky FPL FPB Extension: Paralel to the palm - thumb move away from pinky and fully extended - EPL, EPB Opposition: Thumb pad touches the Pinky Pad. - Opponens pollicis |
|
ABductor POLLICIS BREVIS
Insertions |
PROXIMAL
1) Schaphoid Tubercle 2) Trapezium 3)Flexor Retinaculum DISTAL Thumb - Base of the proximal phalanx LATERAL SIDE |
|
ABductor POLLICIS BREVIS
Innervation |
Recurrent Branch of the Median Nerve C8-T1
|
|
|
ABductor POLLICIS BREVIS
Action |
CMC Joint of the Thumb:
ABduction in a plane perpendicular to the palm |
|
|
ABductor POLLICIS BREVIS
WHat Compartment? |
Thenar
|
|
FLEXOR POLLICIS BREVIS
Insertions |
PROXIMAL
1) Superficial Head: Flexor Retinaculum 2) Deep Head: (Captitate and) Trapezium TUBERCLE DISTAL Thumb - Base of the proximal phalanx LATERAL SIDE |
|
|
FLEXOR POLLICIS BREVIS
Innervation |
Recurrent Branch of the Median Nerve C8-T1
|
|
|
FLEXOR POLLICIS BREVIS
Actions |
CMC Joint: Flexion on a plane parallel to the palm
|
|
|
FLEXOR POLLICIS BREVIS
What Compartment |
Thenar
|
|
OPPONENS POLLICIS
Insertions |
PROXIMAL
Trapezium Tubercle Flexor Retinaculum DISTAL Lateral Side of the surface of the D1 MC |
|
|
OPPONENS POLLICIS
Innervation |
Recurrent Branch of the Median Nerve C8-T1
|
|
|
OPPONENS POLLICIS
Action |
CMC Jt: Roll MC over to oppose thumb to other digits. Assited by ABductor Pollicis Brevis
|
|
|
OPPONENS POLLICIS
What Compartment? |
Thenar
|
|
ADDUCTOR POLLICIS
Insertions |
PROXIMAL
1) Transverse Head: 3rd Metacarpal - Palmar Surface 2) Oblique Head: Capitate Bone, 2nd & 3rd Metacarpals bases' DISTAL Thumb - MEDIAL SIDE of Base of Proximal Phalanx |
|
|
ADDUCTOR POLLICIS
Innervations |
Deep Branch of the Ulnar Nerve C8-T1
|
|
|
ADDUCTOR POLLICIS
Actions |
CMC Joint of the Thumb: Adduction in a plane perpendicular to the palm
MCP Joint of thumb: Flexion |
|
|
ADDUCTOR POLLICIS
What Compartment |
ADductor
|
|
|
What Muscles for the Thenar Eminence?
|
Thenar Compartment Muscles
ABductor Pollicis Brevis Flexor Pollicis Brevis Opponens Pollicis |
|
OPPONENS DIGIT MINIMI
Insertions |
PROXIMAL
1) Hook of Hamate 2) Flexor Retinaculum DISTAL 5 metacarpal SHAFT (Ulnar Border) |
|
|
OPPONENS DIGIT MINIMI
Innervation |
Deep Branch of the Ulnar Nerve C8-T1
|
|
|
OPPONENS DIGIT MINIMI
Action |
Opposition of Digit 5 to D1
Draws metacarpal in palmar direction |
|
|
OPPONENS DIGIT MINIMI
What Compartment? |
Hypothenar
|
|
FLEXOR DIGITI MINIMI
Insertions |
PROXIMAL
1) Hook of Hamate 2) Flexor Retinaculum DISTAL 5th Proximal Phalanx Base MEDIAL SIDE |
|
|
FLEXOR DIGITI MINIMI
Innervation |
Deep Branch of Ulnar Nerve C8-T1
|
|
|
FLEXOR DIGITI MINIMI
Actions |
MCP Joint of 5th Digit - Flexion
|
|
|
FLEXOR DIGITI MINIMI
What Compartment? |
Hypothenar
|
|
ABductor DIGITI MINIMI
Insertions |
PROXIMAL
Pisiform Flexor Retinaculum DISTAL: 5th Proximal Phalanx (ulnar base) MEDIAL SIDE (and dorsal digital expansion of the 5th digit.) |
|
|
ABductor DIGITI MINIMI
Innervations |
Deep Branch of the Ulnar Nerve C8-T1
|
|
|
ABductor DIGITI MINIMI
Action |
MCP Joint 5th Digit:
1) AB duction (2) Flexion PIP and DIP Joint of 5th Digit: Extension) |
|
|
ABductor DIGITI MINIMI
What Compartment? |
Hypothenar
|
|
|
What are the muscles of the Hypothenar Eminence?
|
Opponens Digiti Minimi
Flexor Digiti Minimi Brevis AB ductor Digiti Minimi |
|
|
What is the reference for AB and Adduction of the Fingers?
|
Midline of the Middle Finger - Digit 3 - C7 Dermatone
|
|
LUMBRICALS
Insertions |
2nd - 5th Digit
Tendon of the Flexor Digitorum Profundis to the DDE (Lumbircal 1 - FDP Tendon 1 to DDE of D2 |
|
|
LUMBRICALS
Innervation |
2nd & 3rd Median Nerve C8-T1
4th & 5th Ulnar Nerve C8 - T1 |
|
|
LUMBRICALS
Action |
2nd - 5th Digit
SIMULTANEOUS MCP Joints: Flexion PIP & DIP Joints: Extension |
|
|
LUMBRICALS
What Compartment? |
Central
|
|
|
PALMAR INTEROSSEI (PI)
Insertions |
PROXIMAL
PI1) D2 Metacarpal Medial Side PI2) D4 Metacarpal Medial Side PI3) D5 Metacarpal Medial Side DISTAL DDE of the same digit Medial Side |
|
|
PALMAR INTEROSSEI
Innervations |
Deep Branch Ulnar Nerve C8-T1
|
|
|
PALMAR INTEROSSEI
Action |
PAD
ADduct to D3 |
|
|
Which digit(s) does not have Palmar Interossei
|
D1 and D3
|
|
|
DORSAL INTEROSSEI (DI)
Insertions |
PROXIMAL: Bipenate
DI1) - D1 and D2 MC DI2) D2 and D3 MC Di3) D3 and D4 MC DI4) D4 & D5 MC DISTAL DI1) D2 DDE (smal tendon PP) DI2) D3 DDE (smal tendon PP) DI3) D3 DDE (smal tendon PP) DI4) D4 DDE (smal tendon PP) |
|
|
DORSAL INTEROSSEI
Innervations |
Deep Branch of the Ulnar Nerve C8-T1
|
|
|
DORSAL INTEROSSEI
Action |
DAB
Abduction to a line that runs through the axis of D3 |
|
|
Which digit(s) do not have Dorsal Interossei?
|
D1 & D5
|
|
|
What muscle can be seen on the dorsal side of the plan between D1 & D2?
|
The D1 half of the bipenate proximal attachment of the Dorsal Interossei for D2.
|
|
|
Describe the Construction of the Dorsal Digital Expansion
Extensor Digitorum Interosseous Lumbrical |
The tendon from Extensor Digitorum is in the middle of the phalanx inserting on the surface of the PP and make the "Hood".
The Interosseous are lateral to the phalanx and insert on the dorsal base of the PP.Typically on lateral side unless D3 then both sides. The Interossei is ventral to MCP JT and allows it to Flex the joint. The Lumbrical is lateral to the Dorsal Interosseus and has no bony attachment. Only attaches to the DDE and contributes to the Central Band and Lateral Band. The lumbrical is ventrally to the MCP Jt and allow it to Flex the joint. |
|
|
Describe the Construction of the Dorsal Digital Expansion
Central Band Lateral Band |
Central Band is proximal and medial. Attaches to the Middle Phalanx. It is at the Base of the Traingular Membrane. Central band is dorsal to the PIP, which explains how it can extend at IP
Lateral Band attach to the DP and are the sides of the Triangular Membrane. The Lateral Band is Dorsal to the PIP, which allows it to extend the IP. |
|
|
Describe the Construction of the Dorsal Digital Expansion
Triangel Membrane Oblique Ligament |
Triangle Membrane is attached to the Lateral Bands and tether them dorsally. This prevents the lateral bands from moving ventrally.
Oblique Ligament extends from lateral bands and extends dorsally and crosses the PIP. It then attaches ventrally to PP. This tethers the lateral bands ventrally. |
|
|
Dorsal Digital Expansion Pathology
Triangle Membrane or Oblique Ligament |
Lesions to either the Triangle Membrane or the Oblique Ligament allow the Lateral Bands to move dorsally.
Triangle Ligament or Central Band- Boutonnieres Deformity - injury to either can allow the PIP to be placed into permanent flexion by the FDP. Oblique Ligament Or Later Band - Hyperextension of PIP (Swan neck Deformity) |
|
|
What is the Action of Transverse Metacarpal Ligament ?
|
Works tim the Palmar Ligament to stabilize the Flexor Tendons across the MCP Joint.
It runs on the heads of the D2-D5 MC. |
|
|
What is the action of the Palmar Ligament (Plate)?
|
Works with Deep Transverse Ligament to stabilize the Flexor Tendons across the MCP Joint.
|
