Diagram of coockup wrist splint

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Here are clear diagrams of the cock-up wrist splint:

Cock-Up Wrist Splint - Orthotic Pattern & Anatomy

Diagram 1 - Components of the Splint (Palmar View)

Cock-up wrist splint orthotic pattern showing metacarpal bar and hypothenar bar

Key components labeled:

Metacarpal bar (palmar bar) - supports the transverse metacarpal arch
Hypothenar bar - keeps the hand in a neutral resting position and prevents ulnar deviation
Forearm trough - extends 2/3 the length of the forearm, covering 1/2 the circumference

Diagram 2 - Fabrication Pattern with Anatomical Landmarks

Cock-up wrist splint fabrication pattern showing landmark points A-J

Anatomical landmarks used for pattern tracing:

A - Radial styloid
B - Ulnar styloid
C - 2nd metacarpal head
D - 5th metacarpal head
E - Olecranon process of the elbow
F - Two-thirds the length of the forearm (both sides)

Diagram 3 - Classic Labelled Diagram (Lateral View)

Classic cock-up wrist splint diagram showing palmar crease, wrist strap, and splint components

Components labeled:

Palmar crease indicating MCP joints (proximal border of splint)
Wrist strap
Velcro fastening
Webbing strap
Darvic/formasplint (the rigid base material)

Key Design Features

Feature	Detail
Wrist position	0-30 degrees of extension (neutral to slight dorsiflexion)
Forearm trough	2/3 length of forearm, 1/2 circumference
Proximal border	Just distal to MCP joints (palmar crease)
Distal border	2/3 up the forearm
Thumb	Free (thumb not included)
Type	Volar (palmar surface) immobilization orthosis

Common Indications

Carpal tunnel syndrome (night splinting)
Radial nerve palsy / wrist drop
Wrist tendinitis
Distal radius fracture (non-displaced)
Wrist sprain
Rheumatoid arthritis (resting position)

Note from Tintinalli's Emergency Medicine: The cock-up splint should be avoided for acute wrist and carpal fractures because these injuries are typically caused by forceful dorsiflexion - reproducing that position causes significant pain. It is better suited for non-traumatic conditions requiring wrist support.

Diagram of coockup wrist splint

Generating Image

Medical diagram of a cock-up wrist splint (volar wrist immobilization orthosis), showing lateral and palmar views. Label the following parts clearly: forearm trough (extends 2/3 length of forearm), metacarpal bar (palmar bar), hypothenar bar, wrist in 20-30 degrees extension, velcro straps, proximal border just distal to MCP joints at palmar crease, thumb free and unrestricted. Clean anatomical illustration style with clear arrows and labels, white background, medical textbook quality.

Cock-Up Wrist Splint (Volar Wrist Immobilization Orthosis)

Key Components

Part	Description
Forearm trough	Covers 2/3 length of forearm, 1/2 its circumference
Metacarpal bar (palmar bar)	Supports the transverse metacarpal arch
Hypothenar bar	Prevents ulnar deviation, maintains neutral hand position
Velcro straps	Typically 3 straps - at forearm, wrist, and hand
Wrist position	0-30 degrees of extension (neutral to slight dorsiflexion)
Proximal border	Just distal to the palmar crease (MCP joint level)
Thumb	Left free for functional use

Indications

Carpal tunnel syndrome (especially night splinting)
Wrist drop from radial nerve palsy
Wrist tendinitis / de Quervain's tenosynovitis
Distal radius fractures (stable, non-displaced)
Wrist sprain
Rheumatoid arthritis resting position

Important Clinical Note

The cock-up splint should not be used for acute dorsiflexion injuries (e.g., Colles' fracture reduction) as it reproduces the mechanism of injury and causes significant pain. Wrist fractures are generally immobilized in a neutral or slight palmar flexion position.

Diagram of volar wrist splint

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Detailed medical diagram of a volar wrist splint shown from two angles: palmar (front) view and lateral (side) view. The diagram should clearly label: rigid volar shell/trough along the palm and forearm, wrist positioned in neutral to slight extension (0-20 degrees), forearm trough extending two-thirds up the forearm, thumb hole or thumb free, three velcro closure straps (at distal forearm, wrist, and hand), proximal border ending just below the MCP joints at the distal palmar crease, distal border at the proximal forearm, padding layer between skin and rigid shell. Use clean anatomical illustration style, labeled arrows, white background, medical textbook quality diagram.

Volar Wrist Splint - Key Features

Structural Components

Component	Detail
Volar shell	Rigid or semi-rigid trough on the palmar (front) surface
Forearm trough	Extends 2/3 the length of the forearm
Wrist position	Neutral to 0-20° extension
Padding layer	Foam/cotton between skin and rigid shell
Velcro straps	3 straps - hand, wrist, and forearm
Proximal border	Stops at the distal palmar crease (MCP joint level)
Thumb	Free - unrestricted movement
Fingers	All four fingers free for functional use

Volar vs. Cock-Up Splint

The terms are often used interchangeably. Technically:

Volar splint = describes the surface it covers (palmar side)
Cock-up splint = describes the wrist position (dorsiflexed / extended) Both refer to the same orthosis when the wrist is held in extension.

Common Indications

Carpal tunnel syndrome (night splinting)
Wrist sprain or strain
Distal radius fracture (stable)
Radial nerve palsy / wrist drop
De Quervain's tenosynovitis
Post-operative wrist immobilization
Rheumatoid arthritis flare

Fabrication Tips

Material: thermoplastic (e.g., Orfit, Aquaplast), plaster, or prefabricated
Width: covers half the forearm circumference
Mold with wrist in slight extension while material is warm
Smooth and flare all edges to prevent pressure sores over bony prominences (radial styloid, ulnar styloid)

Diagram of dorsal wrist splint

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Detailed medical diagram of a dorsal wrist splint shown from two angles: dorsal (back of hand) view and lateral (side) view. Clearly label: rigid dorsal shell running along the back of the hand and forearm, wrist positioned in neutral to slight extension (0-30 degrees), forearm trough on dorsal surface extending two-thirds up the forearm, thumb completely free, three velcro closure straps on the palmar side (at distal forearm, wrist, and hand), proximal border ending just proximal to the MCP joints on the dorsum, padding layer between skin and rigid shell, palmar surface left open for sensory feedback and grip. Use clean anatomical illustration style with labeled arrows, white background, medical textbook quality diagram.

Dorsal Wrist Splint - Key Features

Structural Components

Component	Detail
Dorsal shell	Rigid/semi-rigid trough on the back (dorsal) surface of hand and forearm
Forearm trough	Extends 2/3 the length of the forearm, dorsal surface
Wrist position	Neutral to 0-30° extension
Padding layer	Foam/cotton between skin and shell
Velcro straps	Cross from dorsal shell to palmar side for closure
Proximal border	Just proximal to MCP joints on the dorsum
Palmar surface	Left fully OPEN - key distinguishing feature
Thumb & fingers	All free for unrestricted movement

Dorsal vs. Volar Splint - Key Differences

Feature	Volar (Cock-Up)	Dorsal
Shell location	Palmar surface	Dorsal (back) surface
Palmar sensation	Reduced	Fully preserved
Grip function	Partially restricted	Better preserved
Straps	On dorsal side	On palmar side
Best for	Carpal tunnel, resting	Carpal tunnel (preferred), pediatrics, sensory-sensitive patients

Advantages of Dorsal Design

Palmar surface remains open - preserves tactile sensation and grip
Better tolerated for daytime/functional use
Preferred in carpal tunnel syndrome by many hand therapists as it keeps the wrist in neutral without compressing the palm
Less pressure on the median nerve at the carpal tunnel

Common Indications

Carpal tunnel syndrome (especially daytime use)
Wrist drop (radial nerve palsy)
Pediatric wrist immobilization
Post-surgical wrist support where palmar sensation must be preserved
Patients who need to grip objects while wearing the splint

Diagram of resting and splint

Generating Image

Detailed medical diagram of a hand resting splint (resting hand splint / hand resting orthosis) shown from palmar view and lateral view. Clearly label all components: wrist positioned in 10-20 degrees extension, MCP joints in 45-60 degrees flexion, IP joints in slight flexion (10-20 degrees), thumb in palmar abduction and opposition, trough extending from fingertips to two-thirds up the forearm on the volar surface, finger gutter/trough supporting all four fingers, thumb post or opponens bar supporting the thumb, three velcro closure straps at forearm, wrist, and hand, padding layer, flared edges at bony prominences (radial styloid, ulnar styloid, MCP joints). Clean anatomical medical illustration with labeled arrows, white background, textbook quality.

Resting Hand Splint (Resting Hand Orthosis)

Prescribed Joint Positions

Joint	Position
Wrist	10-20° extension
MCP joints	45-60° flexion
PIP / DIP joints	10-20° flexion (slight)
Thumb	Palmar abduction + opposition (midway between radial & palmar abduction)

Structural Components

Component	Detail
Volar trough	Extends from fingertips to 2/3 up the forearm
Finger gutter	Supports all four fingers in slight flexion
Thumb post / opponens bar	Holds thumb in abduction and opposition
Velcro straps	3-4 straps: fingers, hand, wrist, and forearm
Padding	Foam lining over all bony prominences
Material	Low-temperature thermoplastic (custom) or prefabricated

Resting Splint vs. Cock-Up/Volar Splint

Feature	Resting Hand Splint	Cock-Up / Volar Splint
Coverage	Fingertips to forearm	Proximal to MCPs to forearm
Fingers	Included (in slight flexion)	Free
Thumb	Included (abducted)	Free
MCP position	45-60° flexion	Free
Purpose	Prevent deformity, rest entire hand	Wrist immobilization only
Use	Night resting, spasticity, RA	CTS, tendinitis, wrist sprain

Common Indications

Rheumatoid arthritis - resting inflamed joints, preventing ulnar drift and swan-neck deformity
Stroke / hemiplegia - preventing flexion contracture of a spastic hand
Burns of the hand - anti-deformity position
Peripheral nerve injuries (median, ulnar, radial)
Post-operative hand and wrist surgery
Juvenile idiopathic arthritis - night splinting

Key Clinical Note

The resting hand splint is the anti-deformity position for the hand. Positioning the MCPs in flexion and IPs in extension prevents the collateral ligaments from shortening - the most common source of post-injury stiffness and contracture.

Resting hand splint proper diagram

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Here are proper labeled diagrams of the resting hand splint:

Resting Hand Splint (Resting Hand Orthosis / Resting Pan Splint)

Diagram 1 - Components Overview + Fabrication Pattern

Resting hand orthosis fabrication pattern and component diagram

Labeled components:

Pan - supports all fingers and the palm, conforming to the arches of the hand for cupping motion
Thumb trough - extends at least 1/2 inch beyond the thumb tip to support it
C bar - keeps the thumb webspace open in palmar abduction
Forearm trough - supports the weight of the forearm

Diagram 2 - Fabrication Pattern with Anatomical Landmarks

Resting hand splint pattern tracing landmarks A through N

Key landmarks traced for pattern:

A - Radial styloid
B - Ulnar styloid
C - CMC joint of the thumb
D - Apex of the thumb webspace
E - Webspace between digits 2 and 3
F - Olecranon process of the elbow
G - 2/3 down the forearm (proximal border)
K, L, M - Radial side, tip, and ulnar side of finger PIP joints

Diagram 3 - Clinical Photo with Labels

Resting hand splint clinical photo showing pan, C bar, thumb trough and forearm trough

Prescribed Positions

Joint	Position
Wrist	10-20° extension
MCP joints	45-60° flexion
PIP / DIP joints	10-20° flexion
Thumb	Palmar abduction, CMC midway

Four Main Components

Component	Function
Forearm trough	Bears weight of the forearm; 2/3 forearm length
Pan	Supports all fingers and palm; preserves metacarpal arch
Thumb trough	Immobilizes thumb; extends past thumb tip
C bar	Maintains thumb webspace; prevents first web contracture

Indications

Rheumatoid arthritis (prevents ulnar drift, swan-neck, boutonniere)
Burns of the hand (anti-deformity position)
Stroke / spasticity (prevents flexion contracture)
Peripheral nerve injuries
Crush injuries, CRPS
Dupuytren's contracture post-op
Any condition requiring complete hand rest and deformity prevention

Diagram to draw

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Generating Image

A clean, fully labeled medical diagram of a resting hand splint (resting pan orthosis) suitable for drawing in an exam or clinical notes. Show lateral (side) view and palmar (front) view side by side. Label with clear arrows: (1) Forearm trough - extends 2/3 up the forearm, (2) Pan - supports fingers and palm maintaining metacarpal arch, (3) Thumb trough - extends past thumb tip, supports thumb, (4) C bar - maintains first web space in palmar abduction, (5) Velcro straps x3, (6) Wrist in 10-20 degrees extension, (7) MCP joints in 45-60 degrees flexion, (8) IP joints in slight flexion 10-20 degrees, (9) Thumb in palmar abduction. Black and white line drawing style, clean simple lines, white background, like a textbook diagram that a student can copy and reproduce by hand.

Resting hand splint - fully labeled diagram to draw

How to Draw a Resting Hand Splint - Step by Step

Here's a simple guide to reproduce this in an exam or notes:

Step 1 - Draw the hand outline

Draw a hand and forearm from the lateral (side) view with the palm facing up (supine). Fingers slightly curved, not fully straight.

Step 2 - Add the forearm trough

Draw a U-shaped trough on the underside (volar surface) of the forearm, extending 2/3 of the forearm length proximally.

Step 3 - Add the pan

Extend the trough distally to cup all four fingers, following the curve of the palm. This is the "pan" - it supports the metacarpal arch.

Step 4 - Add the thumb trough + C bar

Draw a separate wing/trough for the thumb, positioned in palmar abduction
Add the C bar across the first webspace to maintain the thumb opening

Step 5 - Add straps

Draw 3 Velcro straps crossing the splint: at the forearm, wrist, and hand level.

Step 6 - Label joint positions

Add angle annotations:

Wrist: 10-20° extension
MCPs: 45-60° flexion
IPs: 10-20° flexion
Thumb: palmar abduction

Quick Label Checklist for Your Diagram

Label	Location
Forearm trough	Proximal part of splint
Pan	Distal palm + finger section
Thumb trough	Lateral thumb piece
C bar	First webspace
Velcro straps	x3 across the splint
Wrist 10-20° extension	Wrist angle
MCP 45-60° flexion	Knuckle angle
IP 10-20° flexion	Finger joint angle

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