Supinator to Posterior Interosseous Nerve Transfer for Recovery of Hand Opening in the Tetraplegic Patient: A Case Series.

Twenty-three adult patients with a C5-7 motor level underwent supinator to the posterior interosseous nerve transfers on 36 limbs (median age 31 years, interquartile range [21.5, 41]).

The median interval from injury to surgery was 10.5 (8.2, 6.5) months, with 9 (7.5, 11) months for the acute injuries and 50 (32, 66) months for the chronic (>18 months) injuries.

Chronic patients (>18 months after injury) showed similar outcomes to those who had earlier surgery.

Supination remained strong (at least M4) in all but a single patient and no complications were observed.