Urgent warning signs — calf pain or swelling, fever, the knee locking — are one tap away, always.Something feel wrong?Red flags →
AFTER MACI
Evidence / Sources / E121

Simic M et al. Clinical risk factors and radiographic OA progression among people with knee pain (baseline NSAID use aOR 2.05, adjusted for K/L, JSW and alignment; blinded assessors). Arthritis Res Ther 2021

▲Prospective cohort (nested in a randomized trial) · n = 498KNEE PAIN, MILD RADIOGRAPHIC OAFull text →
Everything on this site that leans on E121 — 0 claims

Nothing cites this source yet — it is part of the vetted evidence base for content still being written.

Population
Knee pain, mild radiographic OA — a different population from MACI itself. Wherever this source appears, that flag appears with it.
Selection policy
Sources enter the registry through docs/research — the evidence table records design, population, and size for every entry, and pages cannot cite anything outside it.