Wonderful CEDH

The CEDH serves one group precisely: people living with an elbow disarticulation. That level leaves the humerus at full length, with its wide lower end intact, and the skeleton is made for that limb. Prosthetic and amputee rehabilitation centres fitting upper-limb cases at this level can start from a frame built for it and spend their fitting time on the socket and the finish.

A cosmetic arm at this level earns its place through the hand it carries. With the fingers posed by the thumb and the wrist turned to suit, the hand becomes a steady holder for bimanual work. During dressing it can hold one side of a garment while the sound hand fastens the other. In the kitchen it pins a chopping board or holds a bag open. During cleaning it braces a bowl or a cloth against a surface. Each of these is a holding task, and a posed hand set once covers it.

Prosthetists in outpatient limb clinics and private prosthetic practices use the skeleton as the structural base of a finished arm. They fit it to a socket made for the long residual limb, then finish the arm to the wearer's chosen appearance. Occupational therapists working with the same wearers can then practise setting the thumb and turning the wrist for each daily task, because every adjustment is made by hand and is easy to repeat.

Wearers who want a light arm for daily life, travel and social settings are well matched to the CEDH. The frame weighs 0.43 to 0.50 kg, so it sits comfortably on the end of the humerus through the day. With nothing to charge, it is ready whenever it is put on, at home or away.

Made for the elbow-disarticulation limb

The skeleton is suited to elbow disarticulation, the level that keeps the whole humerus. Building on a frame intended for that long limb lets the prosthetist put the fitting effort into the socket and the wearer's comfort.

A grip set once and held

Moving the thumb positions the fingers, and they stay put. A bag handle, a sheet of paper or the edge of a towel can be held in place while the sound hand finishes the job.

Wrist angle on demand

The wrist rotates passively. Turning the hand to face up, down or sideways lets the same grip serve a tabletop task one minute and a shelf the next.

Light enough for all-day wear

At 0.43 to 0.50 kg the aluminium frame keeps the mass on the end of the humerus low, which helps the arm feel comfortable from morning dressing to the evening.

Ready the moment it goes on

There is nothing to charge. The hand and wrist work by hand alone, so the arm is ready on every outing and on every day without a charging routine.

Finger count matched to the wearer

Three or five fingers are available. A wearer who prefers a simple holding shape can take three, and one who wants a full hand outline can take five.

Simple adjustments to teach

Every position comes from a push or a turn. Therapists can teach the thumb and wrist settings in a short session, and wearers repeat them easily at home.

A firm base for the finished arm

The aluminium skeleton gives the prosthetist a rigid metal structure to build on, so the socket and finished arm sit on a frame that holds its shape.

Item number CEDH

Wonderful identifies this cosmetic elbow disarticulation skeleton by item number CEDH, the code used when the frame is specified.

Aluminium construction

The whole skeleton is made in aluminium. That gives the frame its stiffness at a low weight.

Mass of 0.43 to 0.50 kg

The assembly weighs between 0.43 and 0.50 kg, well under a kilogram for a full arm frame.

Three or five fingers

Two finger counts are available on the hand. The choice is made when the skeleton is specified.

Thumb-controlled hand

Hand actions are controlled by moving the thumb. Pushing it repositions the fingers, which then hold the new posture.

Positioning by hand

Finger positions are set by moving the thumb by hand. The wearer can use the sound hand, a helper or a firm surface to make the change.

Passive wrist rotation

The wrist joint can rotate passively. A turn by hand sets the angle of the whole hand for the task in front of it.

Elbow disarticulation fitting level

The skeleton is suitable for elbow disarticulation. Its design starts from a residual limb that keeps the full humerus.

Unpowered operation

Movement comes from the wearer alone, so the skeleton has nothing to charge and keeps to a purely mechanical design.

Cosmetic arm frame

As a cosmetic skeleton, the CEDH forms the inner structure on which the prosthetist builds the finished arm.

One skeleton assembly

The CEDH comes as a single skeleton assembly, with the hand and the passively rotating wrist carried together on the aluminium frame.

Posture held between adjustments

Once the thumb has positioned the fingers, the hand keeps that shape until it is moved again, so a grip set at breakfast still holds at lunch.

Holding grip for two-handed tasks

A posed hand acts as a steady holder. It supports bimanual work such as dressing, cooking and cleaning while the sound hand does the fine movements.

The CEDH suits the person with an elbow disarticulation who wants a light, dependable arm that is ready the moment it is put on. Its case rests on its fitting level: the skeleton is made for the long limb that keeps the whole humerus, so the prosthetist begins from a frame intended for that wearer. What it does well is hold. A thumb pushed into position and a wrist turned to the right angle give a grip that stays where it is set, which is exactly what two-handed daily tasks ask of the second hand. Prosthetic centres building arms for this level will find it a straightforward base. The skeleton weighs 0.43 to 0.50 kg in aluminium and offers three or five fingers.