unique orthopaedic devices

DynaCox^®

Dynamic hip abduction brace

The original DynaCox^® hip orthosis was the first dynamic hip abduction brace available to clinicians. The treatment concept is a hip brace offering a functional combination of bandage and orthosis. The bandage provides compression and helps reduce excessive flexion of the hip. The orthosis offers containment by clever use of the counter forces generated by its pre-tensioned design.

DynaCox^® is constructed by Brace Orthopaedic from three basic measurements supplied by the clinician. This ensures a semi bespoke fit when supplying the brace to the patient, with only fine tuning required by the clinician at this stage. With the leg piece constructed at an abduction angle of 20°, even when the patient works against this force by adducting and flexing, the brace responds with a counter force through the femur pad to give the required containment.

This close fitting hip orthosis allows more normal movement and improved compliance, whilst helping return confidence to those unfortunate to have had, or who are at risk of a dislocation.

Indications

Hip dislocation following arthroplasty which may be due to:

Muscle imbalance
Muscle weakness
Soft tissue laxity

DynaCox^® can also provide relief after hip revision surgery or hip replacement surgery.

Contraindications

Inappropriate bony alignment due to position of prosthesis or acetabulum.

Function of the DynaCox^® hip brace

Safeguarding surgical results
Dislocation prophylaxis
Early functional motion therapy

where to measure for the DynaCox evolution hip brace

From the three measurements (U1, U2 and U3) supplied, together with left/right orientation, we will construct the brace for you. Fine tuning adjustments are possible when fitting the patient.

Options

We can replace the standard TRI-Flex joint (Flexion limited from 70° but no limit on Extension) with a ROM-Flex joint which controls the maximum angle of flexion and extension of the hip. This range can be adjusted by the clinician in increments of 15°, with settings from 0° to 90°.

We can replace the standard Lateral Side Bar with a Short Side Bar for patients who have a femur less than 36cm long. (femur length = distance from knee crevice - greater trochanter).

It is also possible to purchase additional bandages separately.

How the DynaCox^® works

Bandage + Orthosis - DynaCox

Circular compression

The functional bandage:

The circular compression supports the gluteus muscles (abductors) which cover the hip joint like a fan and stabilise it.
Allows the components of the orthosis to be positioned close to the body for optimal functionality with minimal bulk for the wearer.

Three-point principle

The orthosis:

A splint that can be positioned perfectly for optimal pressure transfer with the three-point principle.
The components of the orthosis –
    the medial condylar fixture 1
    the sub-trochanteric pad 2
    and the counter-support of the hip clasp 3
    – ensure dynamic stabilisation of the femoral head in its socket

Bandage and orthosis together represent the perfect system for orthotic hip support

Stabilisation of the osseous structures to prevent dislocation.
Supports muscle build-up throughout the entire treatment period.

Rehabilitation

The normal wearing time for DynaCox^® during the rehabilitation therapy is 24 hours a day for 12 weeks and should be reviewed at appropriate stages throughout the treatment. The combination of well thought out biomechanics and component design significantly reduces the risk of dislocation, whilst allowing normal muscle action to promote rehabilitation. The three point principle stabilises the hip joint, so that a static abduction position is replaced by a dynamic abduction guidance. The patient may therefore place the leg involved actively below the load line of the body weight and still enjoy protection from dislocation. The abductors are then put under strain with every step and atrophy can be avoided.

Clinical study

The Dynamic Hip Orthosis 'DynaCox' in case of a tendency to dislocation after implantation of a hip endoprosthesis. Prof. Dr. J. Heisel

Size chart

Size	Circumference / cm
	U1 hip bandage / pelvic belt	U2 thigh bandage	U3 condylar clasp
XS	58 - 70 cm	32 - 44 cm	27 - 35 cm
S	70 - 85 cm	40 - 52 cm	32 - 40 cm
M	85 - 100 cm	48 - 60 cm	37 - 45 cm
L	100 - 120 cm	56 - 68 cm	42 - 50 cm
XL	115 - 135 cm	62 - 76 cm	47 - 58 cm