Flexor carpi radialis action
Flex wrist, radial deviation
Palmaris longus action
Wrist flexion
Lumbricals action
IP extension, MP flexion (intrinsic +)
Interossei action
Digit AB/ADduction
GH rhythm
In ABduction, humerus is most of the movement up to 90 deg, the scapular rotation is most of the movement after 90 def
Flexor tendon zones
1: DIP & distal, only contains FDP tendon
2: from insertion of FDS (PIP) to A1 pullet (MCP), contains FDS & FDP tendons
3: below MCP to edge to carpal tunnel (bottom of palm), contains lumbricals
4: within carpal tunnel, has ALL 4 flexor tendons & median nerve
5: proximal to carpal tunnel, has flexor tendons withinin the forearm muscles
*thumbs zones go T1-T3 from distal to proximal
Functional position of hand
Wrist slight extension (~30 deg), MCPs & IPs slightly flexed, thumb in opposition
Zero position
Resting position of hand as opposed to anatomical position: wrist more or less neutral, fingers in more flexion
Mnemonic for UE nerves
DR. CUMA
drop wrist - radial
(ulnar) claw - ulnar
ape hand - median
Static progressive splint
Does NOT allow movement, but is adjustable
- non elasitc
- strap pulls at body part at 90 deg
- good for: stiff joints, wear should be followed w/ ACTIVE use of joint
Dynamic splint
Dynamic w/ elastic component
- strap/lever pulls at body part at 90 deg angle
- assists w/ movement (ex: radial nerve palsy)
Resting hand splint use
General comfort/prevents contractures
- ex: stroke
Anti-deformity splint (intrinsic + splint) use
Positioning after trauma/edema
- ex: burns
Short thumb spica (short opponens) splint use
Looks like a hand puppet unicorn; unicorn horn = spike = spica
- leaves wrist free
- used for: CMC & MP arthritis
Lumbrical bar/Anti-claw splint use
A hand based orthotic that positions the 4th & 5th digits in 30°-40° of MCP joint flexion while allowing IP joint motions
Wrist cock-up (volar wrist) splint use
Static splint, immobilizes wrist but keeps fingers free
Wrist extension splint use
Functional splint w/ 45° wrist extension, worn during day to prevent wrist drop
Long thumb spice (long opponens) splint use
Similar to short opponens but goes down 2/3 of the forearm to immobilize wrist & used for De Quervain’s
Dorsal block splint
Prevents from going into too much extension of MPs
Posterior elbow splint
Positions elbow 90° of flexion
Anterior elbow splint use
Used in case of a burn to dorsal aspect of forearm
Mallet/DIP extension splint
Corrects mallet deformity, used for injury of extension tendon to DIP
- immobilize in full extension 6-8 weeks
Oval 8 splint
Used for: Boutonniere deformity (finger looks like this when u press a button too hard) OR Swan neck deformity (inverse of Boutonniere), depending on position of splint
What orthosis is best for inhibiting/normalizing tone?
Saebostretch dynamic resting hand orthosis (for minimal to moderate tone)