The Steindler flexorplasty was evaluated in fifteen patients to determine the maximum strength of the flexorplasty.
Nine of the fifteen patients were able to lift one pound or more to 110 degrees of flexion.
The flexion contracture present was correlated to the strength of the flexorplasty. The greatest strength occurred in patients with a flexion contracture of 30 degrees or more.
A flexion contracture of 30 degrees or more was common when the triceps was of less than a strength rating of 3.
There was no correlation between pronation contracture and strength.
There was no pronation contracture when the strength of the supinator was 4 or 5.
Arthrodesis of a flail shoulder improves the effectiveness of the flexorplasty.