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Orthopaedic, Trauma & Prosthetics
Wonderful WPK-002B

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Wonderful Orthopaedic, Trauma & Prosthetics

Wonderful WPK-002B

Product Code: OTAP-PLAC-4166

Stand in the shower on your own, then at the water's edge with family.

Keep the limb on for the morning wash and the walk down to the water's edge. Its sheet calls this aluminium knee waterproof, gives it a weight of 275 g, a 135° bend and a 120 kg load weight, and names a pyramid adaptor as its top connection.

Sections

Prosthetic Feet & Knees

Categories

Orthopaedic, Trauma & Prosthetics

Condition

New

Origin

China

Seller Type

Certified Professional Seller

CE & ISO Certified

Global Shipping

Supplier: Medigear

Showering while standing is what Wonderful's WPK-002B is designed for, as a prosthetic knee joint for transfemoral and knee-disarticulation limbs that its sheet calls waterproof. The full name, Waterproof Knee Joint Pyramid Adaptor, identifies a male pyramid as the top connection. Four figures are printed beside the code: aluminium (AL) as the material, a weight of 275 g, a load weight of 120 kg and a knee flexion range of 135°. It is a mechanical knee with no electrical parts, and the manufacturer's instructions for use set out its control method, any lock, and the water depth, duration,, and type it tolerates.

The consequence is felt in the bathroom. A wearer who can keep the limb on while washing stands at the basin, steps into the shower, and dries off on two legs, with the door closed and no one called in to steady them on a wet floo, forr many adults that is the most private half hour of the day. Whether a particular wearer should stand to shower at all is a clinical judgement about balance, grab rails and floor surface, made before the knee is ordered.

The photograph shows a rounded blue body with a short silver fitting at the top and another at the base. A dark knob projects from each side, a dark rectangular pad crosses the front, and a white cord loops from the left side to a loose black part. The manufacturer's documentation explains the letter B in the code, and the quotation lists every item that ships.

The manufacturer's drawing shows the build height, distal connection, and overall size. Medigear. uk offers it to buyers in more than 80 countries, and the enquiry team provides stock and lead time.

The WPK-002B belongs on transfemoral and knee-disarticulation limbs for wearers who want to keep a leg on where water is part of the day. The first of those places is the bathroom. Standing to wash, stepping into a shower tray and drying off without first sitting down to remove the limb all depend on a knee that can get wet. The second is the shore or the poolside: walking barefoot across sand with relatives, standing in the shallows while children splash, and not having to watch from a chair.

Evidence explains why the bathroom deserves care. A CDC analysis of 2008 emergency department data from the United States counted 234,094 nonfatal bathroom injuries in people aged 15 and over. Falls caused 81.1%, and the rate rose roughly ninefold between the youngest and oldest age groups. Among people with lower-limb loss, Wong and colleagues followed 41 adults for up to 41 months and found that 56.1% fell at least once and 26.8% had a fall needing medical care. Neither study tested a knee, and neither supports a product conclusion.

Prescribers have long debated where water limbs fit. In a 2002 survey of about 90 prosthetists, rehabilitation physicians, occupational therapists and physiotherapists, Hanspal and Nieveen found that 61% rated leisure swimming more than once a week an absolute indication and 47% said the same of frequent beach use. Showering divided opinion: 32% of prosthetists called it an absolute indication, against 8% of occupational therapists.

Limb-fitting centres, rehabilitation services, private prosthetic practices and export programmes are the natural buyers. NHS trusts in England use the mandated prosthetics framework, and public buyers elsewhere follow their own tender rules. The conformity documentation those procurement routes require is issued by the manufacturer and shared by the enquiry team.

Washing on two legs behind a closed door

With the limb on, a wearer cleared to stand can shower without calling anyone in. Personal care stays a private matter, handled at the wearer's own pace.

Fewer transfers in a wet room

Taking a limb off beside the shower means hopping or shuffling to a seat on a wet floor. Keeping it on removes that step, provided the clinical team judges standing safe for this wearer.

Barefoot on the beach with the family

A day at the seaside can be spent walking down the sand with relatives and standing where they stand. The water limits in the instructions mark how far in the knee may go.

Joining in at the water's edge

When grandchildren splash at the edge, a wearer on this knee can stay beside them. Getting wet stops being a reason to hang back.

Light at 275 g

The knee adds little to the weight of the limb. That matters to someone who puts the leg on and takes it off around bathing every day.

A bend of 135°

Flexion to 135° lets the wearer sit on a shower stool, lower into a car after the beach or crouch to pick up a towel.

A cautious planning figure for the build file

Recording 100 kg as the planning load keeps the limb within the lower of the two figures Wonderful publishes. The tested rating and loading level from the ISO 10328 report replace it once that document is on file.

Nothing electrical near the water

The knee has no battery, charger or circuitry, so there is no electrical safety test to arrange for it.

A familiar connection on top

A male pyramid lets a prosthetist align the knee with standard receiver screws, using the same tools the service already holds.

Waterproof on the sheet

The product name begins with the word Waterproof. Depth, duration, water type and any IP rating are defined in the instructions for use.

Pyramid adaptor at the top

Pyramid Adaptor in the name identifies a male pyramid as the proximal connection. Its dimensions follow the manufacturer's drawing.

Aluminium construction

Material is printed as AL. Alloy grade and any anodised or coated finish are named on the material certificate, and the finish matters where chloride water is involved.

275 g mass

Printed as 275g in the Weight row, this figure goes into the limb's weight budget with socket, tube and foot.

Load weight on the sheet

The sheet prints 120 kg, while the specification table in Wonderful's listing for the same product line prints 100 kg. The manufacturer's ISO 10328 test report, with its loading level and cycle count, settles which figure the knee was tested to.

135° knee flexion range

Flexion is printed as 135°. Any flexion stop and how the body limits the bend in practice are shown on the drawing.

Rounded blue body

In the photograph the main body is rounded and blue. The quotation states which colour is supplied.

Dark side knobs

A dark knob projects from each side of the body. What they do, and whether they are adjusted or left alone, is described in the instructions for use.

Front pad

A dark rectangular pad sits across the front of the body. The exploded view in the instructions shows what it is and how it is fitted.

Black part on a white cord

A white cord runs from the left side to a loose black part. The quotation shows whether it is included, and the instructions explain its use.

Lower fitting

A short silver fitting projects below the body. Its type and size for the shin tube are given on the manufacturer's drawing.

Control mechanism

Swing and stance behaviour, any lock and any extension assist are named in the instructions for use, along with the settings a prosthetist can reach.

Care after wet use

The rinse and dry routine after shower, pool or sea use comes from the manufacturer. A written copy for the wearer belongs with the limb at handover.

Service and warranty

Inspection interval and the repair route follow the manufacturer's maintenance schedule. Warranty terms are set out in the quotation.

Manufacturer's quality statements

Wonderful's website describes an ISO 13485 quality system and CE certification, and the enquiry team shares the certificate scope that applies to this knee.

The WPK-002B suits prosthetic services planning a limb that a wearer can keep on in the shower and take down to the shore. Plan it for people up to 100 kg with carried loads counted, until the ISO 10328 test report states a rating. Choose it where independence in personal care and time at the water with family matter, and the clinical team judges standing in a wet room safe. Decline it for wearers above that figure, and for anyone whose planned water use the instructions exclude. Settle the permitted water types, the rinse routine and the control method first.

Medigear.uk lists the WPK-002B for business buyers worldwide and can arrange delivery, installation, commissioning, familiarisation and service cover. Ask the enquiry team for the instructions for use, the ISO 10328 test report, the drawing, the material certificate and the declaration of conformity before ordering.

FAQ

Frequently Asked Questions

Everything buyers need to know about sourcing medical equipment through MediGear.

Wonderful's sheet uses the word "waterproof," and the page repeats it as the maker's claim. The manufacturer's instructions for use set out the depth and duration of immersion, whether fresh, chlorinated, or salt water is permitted, any IP rating, and the rinse-and-dry routine afterwards. The enquiry team shares that document, and it belongs in the limb file before the first shower.

That is the job the knee is pitched for, but the wearer's clinical team. Balance on a wet floor, a grab rail within reach, a non-slip surface and a way to sit if fatigue sets in all matter more than the knee itself. A first standing shower in a supervised wet room shows how the wearer copes before it becomes routine at home.

The instructions for use set out which water types and depths the manufacturer permits, so start there. Aluminium is prone to pitting corrosion when chloride salts sit on the surface, which is why seawater and pool water usually require a freshwater rinse and thorough drying afterwards. Nothing on this page extends the sheet's waterproof claim to swimming.

The name places a male pyramid at the top of the knee, ready for a female receiver beneath the socket. Alignment is then set with the receiver's screws in, as usual. The manufacturer's dimension sheet shows the distal connection to the shin tube, which the enquiry team shares.

The knee in the photograph is blue, so the letter likely refers to colour. The manufacturer's documentation explains its meaning, and the quotation states the colour that will arrive.

The photograph shows a white cord looping from the left side of the knee to a loose black part. The instructions for use describe its purpose, and the quotation shows whether it ships with the knee. Until then, it forms no part of the specification.

The sheet prints 120 kg, and Wonderful's own listing for the same product line repeats that in its summary but gives 100 kg in its specification table. With published figures running from 100 to 120 kg, plan the limb at 100 kg until the ISO 10328 test report states the rating and its test level. A limb carries the rating of its weakest structural part. Many adapters and tubes in modular ranges are rated to 125 kg,makings this knee the ceiling, and the planning figuremusto cover body weight plus anything the wearer carries.

A 2011 CDC analysis of 2008 emergency department data from the United States estimated 234,094 nonfatal bathroom injuries in people aged 15 and over, 81.1% of them caused by falls. Bathing or showering, or getting out of the tub or shower, preceded 37.3% of injuries. The injury rate climbed from 58.8 per 100,000 at ages 15 to 24 to 515.3 at 85 and over. These are population figures and say nothing about any particular knee.

It is wrong for anyone whose body weight plus carried load exceeds 100 kg, the planning figure until the ISO 10328 test report states a rating, or for a wearer whose clinicians judge seated washing to be the safer routine. It also suits no one whose water use the manufacturer's instructions exclude. If the activity grade, stance control, or lock arrangement matters to the prescription, those details come from the instructions for use before you choose it.

The WPK-002B is typically Class I under UK MDR 2002, or higher depending on use, as stated on the manufacturer's declaration of conformity, which the enquiry team shares. A published EU MDR declaration dated 26 June 2022, naming SUNGO Europe B.V. as EU representative and Class I under Rule 1, lists the Waterproof Knee Joint Pyramid Adaptor under this code. A limb assembled for one named wearer is a custom-made device, and the workshop that builds it holds the manufacturer duties.

NHS England names the NHS Supply Chain Prosthetic Components and Associated Products framework as the compliant route for prosthetic products. It runs from 24 November 2025 to 23 November 2027 with a single Artificial Limbs lot. NHS procurement routes require it, and equivalent public procurement elsewhere asks for the same.