Table 5

Tissue outcome and tolerance of sequential synovial biopsies

US-NB*US-P&F*A*
Tissue yield and quality:
  • Proportion of graded ST fragments

  • Total graded ST area

  • ST area per graded biopsy fragment15

===
RNA yield
Small joints
RNA yield
Large joints15
US-NB1 >US-NB2: p=0.026––
–US-P&F1>US P&F2: p<0.001A1 <A2:
p<0.001
RNA quality (RIN)
Small and large joints15
===
Immune cell infiltrate and pathotype15===
Tolerance VAS pain, swelling, stiffness16===
Willingness to repeat16=
Adverse events16=
  • *First biopsy is the reference in this table.

  • A, arthroscopy; NB, needle biopsy; P&F, portal and forceps; RIN, RNA integrity number; ST, synovial tissue; US, ultrasound; VAS, visual analogic scale