Abstract:

Objective To investigate the surgery method for early spontaneous posterior interosseous nerve entrapment,to observe the postoperative efficacy in tr
eatment,to evaluate the surgical outcomes,and to provide a foundation for clinical choice of reasonable operation scheme.Methods 21 cases of early spontaneous posterior interosseous nerve entrapment received operation.13 cases (18 arms) were treated by neurolysis,and 8 cases (8 arms )　were treated by nerve grafts with small vessels wrapping operation;all the patients were followed up for 10 to 20 months;the finger extensor muscle strength and metacarpophalangeal joint activity were evaluated.Results The lesion extensor muscles were part of the denervation changes.Neurolysis muscle strength:14 arms were excellent(82.35%),2 arms were good,1 arm was fair,1 case was lost;extensor function:15 arms were excellent(88.24%),1 arm was good,1 arm  was fair,1 case was lost.Nerve graft  muscle strength:6 arms were excellent(75.00%),1 arm was good,1 arm was fair;extensor function:7 arms were excellent(87.50%),0 arm was good,1 arm was fair. Conclusion Neurolysis can have a good efficacy in treatment of early spontaneous posterior interosseous nerve entrapment without obvious degeneration.When the severe degeneration of entrapment nerve happens,a nerve graft surgical treatment is needed.

Key words:  , posterior interosseous nerve ；entrapment；neurolysis；nerve graft