Mackinnon and Dellon modified the Medical Research Council (MRC) scale for sensory recovery by including measures of two-point discrimination. This can be used to monitor a patient after surgery or other injury to a peripheral nerve.
Testing of 2 point discrimination is done use the Disk-Criminator testing device.
Parameters:
(1) sensitivity to deep cutaneous
(2) sensitivity to superficial pain
(3) sensitivity to touch
(4) presence of overresponse
(5) 2 point discrimination, static
(6) 2 point discrimination, moving
|
Deep Cutaneous |
Superficial Pain |
Touch |
Touch Over-Response |
Grade |
|
none |
none |
none |
NA |
S0 |
|
present |
none |
none |
NA |
S1 |
|
present |
present |
none |
NA |
S1+ |
|
present |
present |
some |
none |
S2 |
|
present |
present |
some |
present |
S2+ |
|
present |
present |
full |
none |
S3 or better |
|
2 point Static |
2 point Moving |
Grade |
|
> 15 mm |
> 7 mm |
S3 |
|
7 - 15 mm |
4 - 7 mm |
S3+ |
|
2 - 6 mm |
2 - 3 mm |
S4 |
Grade S4 indicates complete recovery.
Specialty: Neurology
ICD-10: ,
