Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Pain measurements of patients. VAS and AVN are visual analog scale and avascular necrosis, respectively. Combined relative mean VAS scores (right three bars) are those of 96 joints (hip bone [left bars]: 15 joints; knee and hip cartilage [middle bars]: 81 joints). Error bars indicate standard errors. * = p < 0.05.
