Zammit et al reported a diagnostic rule for identifying radiographic osteoarthritis in a patient with first metatarsophalangeal (MTPJ) pain. The authors are from La Trobe University in Australia.
Patient selection: first metatarsophalangeal joint (MTPJ) pain
Parameters:
(1) pain duration in months
(2) dorsal exostosis
(3) hard-end feel (sensation which the therapist detects at the end of the available ROM, perceived as abrupt end blocked by bone)
(4) crepitus
(5) first MTPJ dorsiflexion range of motion (ROM) in degrees
Parameter
Finding
Points
pain duration
<= 25 months
0
> 25 months
1.053
dorsal exostosis
absent
0
present
1.073
hard-end feel
absent
0
present
1.191
crepitus
absent
0
present
1.901
first MTPJ dorsiflexion ROM
< 64 degrees
1.748
>= 65 degrees
0
value of X =
= SUM(points for all of the parameters) - 2.048
probability of radiographic first MTPJ osteoarthritis =
= 1 / ( 1 + EXP((-1) * X))
Performance:
• The area under the ROC curve is 0.87.
To read more or access our algorithms and calculators, please log in or register.
