extensor lag

extensor lag

the amount of drooping at a weakened joint that can extend only passively, no longer actively.
References in periodicals archive ?
The patient was completely weaned from the knee brace at 3 months postoperatively with no complaint of knee pain and had no residual extensor lag.
However, 10 patients (19%) had an extensor lag, 7 (13%) walked with an assistive device, and 6 (11%) had an extensor lag and used an assistive device at follow-up.
Three months postoperatively, his active range of motion was 10[degrees] to 110[degrees] with active straight-leg raise and no extensor lag.
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