The Extensor Indicis Proprius Opponensplasty although not widely exercised by hand
surgeons has previously been shown to produce good results in the restoration of thumb
opposition. Over the last 5 years the Extensor Indicis Proprius was selectively used
in cases where the Flexor Digitorum Superficialis was unavailable or inappropriate.
In a small case series operating on a total of six male patients with an average age
of 32 and follow up of 12 months we have been impressed by the functional outcome
and lack of donor site morbidity. The Extensor Indicis Proprius is expendable with
minimal donor site morbidity, is of sufficient length and has an optimal line of pull
to provide a superior mechanical advantage and a favourable torque when compared to
Flexor Digitorum Superficialis.
Keywords
Extensor Indicis - Tendon transfers - Opponensplasty - Burkhalter - Hand injury
