General Questions

Question 1

What are MCP contractures?

Answer 1

A condition where the MCP joints are immobilized in extension so the collateral ligaments at the MCP joint are tight.So if the extensors are tight the patient will have a hard time with flexion. Collateral ligaments shorten in the extended position and are hard to stretch out. Creates a claw hand

Question 2

What are flexion contractures

Answer 2

When the PIP and/or DIP joints are held in flexion. The lateral and accessory ligaments of the PIP and DIP joints will tighten and shorten in the flexion position and make it hard to extend

Question 3

What do volar plates prevent

Answer 3

Anterior dislocation

Question 4

Skiing with VALGUS stress on thumb injures what

Answer 4

Ulnar collateral ligament of the thumb

Virus stress would injure the radial

Question 5

Where is flexor retinaculum?

Answer 5

Pisiform, scaphoid, trapezium, hamate

Roof of carpal tunnel

Question 6

Function of flexor retinaculum

Answer 6

Attachment for thenar and hypothenar muscles
Prevent bowstring effect of tendons
Maintains carpal arch

Question 7

What passes through Guyons canal

Answer 7

Ulnar artery and ulnar nerve

Question 8

What problem occurs at Guyons canal

Answer 8

Nerve entrapment or compression

Question 9

What are thenar muscles innervates by

Answer 9

Recurrent branch of median nerve

Question 10

What are hypothenar muscles innervates by

Answer 10

Deep branch of ulnar nerve

Question 11

What does radial artery pass thru to get to the Palm

Answer 11

Heads of first dorsal interossei

Question 12

What extends the digits

Answer 12

Extensor mechanism

Question 13

What makes up the extensor mechanism

Answer 13

Extensor digitorum ligaments

Hood which wraps around metacarpal heads and base of proximal phalanx. Turns into central slip and lateral bands

Question 14

What is the hood of the extensor mechanism anchored by

Answer 14

Palmar ligament

Question 15

What is the ORL and how does it work

Answer 15

ORL: oblique retinacular ligament
Is on stretch during DIP flexion and therefore pulls PIP into flexion
When PIP goes into extension, it pulls DIP into extension
PIP and DIP MOVE TOGETHER BC OF THIS LIGAMENT

Question 16

What is mallet finger deformity

Answer 16

Tears in central slip. DIP joint stuck in flexion

Question 17

What is Dupuytrens contracture

Answer 17

Primarily found in Eastern European men in their 60’s
In Palm, the palmar fascia becomes tight and effects 4,5 fingers and pulls fingers into Palm
Tendons bcm cords and they are stuck there
Keep it open and let it heal inside out. Or heal openly

Question 18

What is trigger finger

Answer 18

Repetitive over use of tendons causes them to get caught as they move thru their sheath
Pt will say that index finger gets stuck and they have to extend it manually
CAN HAPPEN TO ANY FINGER INCLUDING THE THUMB (texting)