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Extendible Implant Solutions

Minimally Invasive System

Based upon our experience and follow up, in April 1992, Stanmore Implants introduced a re-engineered worm drive mechanism.

The mechanism is encased within the shaft and, using an Allen key, the telescopic implant is extended.

The length of the incision is typically 1-2cm and lengthening procedures can often be undertaken as day cases, leading to significant reduction in rehabilitation and in-patient duration, benefiting the patient and reducing healthcare costs.


Advantages
Minimal incision to access the port, reducing the risk of infection and aiding rapid rehabilitation following limb lengthening
Fast and straightforward technique
Custom-made device with minimal bulk helps soft tissue closure
Dependable drive mechanism enclosed within the shaft prevents tissue invading the mechanism
Barrel can be exchanged whilst the intramedullary stem remains in situ when maximum extension is obtained


Number of insertions
of minimally invasive growing implants
Distal Femur 250
Proximal Femur 38
Mid-shaft Femur 15
Total Femur 17
Proximal Tibia 105
Mid-shaft Tibia 8
Proximal Humerus 30
Various 19

Case Report


Young boy 2 years and 9 months diagnosed with osteosarcoma of his right femur in 1994.

Total femoral
replacement with
hemi-knee, implanted
in March 1994.


2 year post-op.


1996: primary implant replaced by a new, longer total femoral replacement which includes now
a tibial component.


In early 2004, the patient is progressing very well and is still undergoing regular lengthening procedures


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