Wonderful C7E6-A

The C7E6-A is used in specialist paediatric prosthetic clinics, limb-fitting centres that serve children with high-level amputation, orthopaedic oncology services and children's rehabilitation hospitals. Its users are children with hip disarticulation or hemipelvectomy, most often after surgery for bone or soft-tissue tumours, after severe trauma, or with a congenital limb difference at hip level.

Hip-level fittings in children are rare and demanding, and the focused design of the C7E6-A reflects that. A hip-level prosthesis has to be controlled from the trunk, through a socket that wraps the pelvis, so the weight and size of every component matter. A four-bar hip joint scaled to a child's frame and built in aluminium alloy at 400 g keeps the top of the leg compact and light, while its four-link geometry gives controlled, stable movement for standing and walking.

The prosthetist shapes the socket around the child's pelvis and torso, mounts the C7E6-A, and aligns it with the knee and foot below. Physiotherapists then work with the child on standing balance, walking and sitting. The flexion range listed for the joint allows the child to sit at a desk, on low seats and on the floor with playmates, which matters for joining in at school and at home.

Children with hip-level prostheses are reviewed often as they grow. The 75 kg rating lets the same joint stay in use across socket rebuilds within its range. Typical uses include a first hip-level prosthesis after paediatric tumour surgery, a rebuild for a growing child, and a prosthesis for a child with a congenital hip-level difference. In every case, the C7E6-A brings a four-bar hip to a child's scale.

A four-bar hip at a child's scale

The joint brings four-link hip movement to a size suited to children.

Light at the top of the leg

At 400 g in aluminium alloy, it keeps weight down where the child has to lift and swing the whole leg.

Controlled, stable movement

Four-bar geometry gives the hip controlled movement and stability.

Neat under clothing

Scaled for a child's frame, the joint sits at the hipline beneath the waistband.

Room to sit

The 175° flexion range listed for the joint allows sitting on low seats and the floor.

Lasts through rebuilds

A 75 kg rating covers children into their teens, so the joint can stay in use as sockets change.

Strong, light alloy

Aluminium alloy gives strength at low weight.

Mechanical simplicity

The joint has no electrical parts, so nothing needs charging.

Item number C7E6-A

C7E6-A identifies Wonderful's children's four-bar hip joint.

Four-bar mechanism

The hip uses a four-link mechanism.

Aluminium alloy

The joint is made of aluminium alloy.

Weight

The joint weighs 400 g.

Load rating

It carries users up to 75 kg.

Listed flexion range

The joint is listed with a flexion range of 175°.

Paediatric scaling

The joint is sized for children.

Hip-level use

It forms the hip of a prosthesis for hip disarticulation or hemipelvectomy.

Socket mounting

The joint mounts on a hip-level socket.

Compact profile

It sits close to the trunk at the hipline.

Mechanical operation

The joint uses no power.

Manufacturer quality system

Wonderful holds an ISO 13485 quality management certificate.

The C7E6-A suits specialist services fitting children with hip disarticulation or hemipelvectomy, where every component has to be light and compact. Its strength is focus: a four-bar hip joint scaled to a child's frame, built in aluminium alloy at 400 g and rated to 75 kg, giving controlled, stable movement from the top of the leg. Listed with 175° of flexion, it leaves room for sitting with friends, and it sits neatly under clothing at the hipline. For paediatric teams handling rare, high-level fittings, it is a hip joint made to a child's scale, light enough for a young wearer to control.