Implant based differences in adverse local tissue reaction in failed total hip arthroplasties: a morphological and immunohistochemical study

Table 6 Observed histologic subtypes in the Dual-Modular Neck and the Metal-on-Metal (MoM) total hip arthroplasty (THA) groups

Observed subtypes	Dual-Modular Neck THA (N = 54 hips)	MoM THA (N = 18 hips)
Macrophagic	0 (0%)	1 (5.2%)
Macrophagic with Mixed Lymphocytic Infiltrate
w/ Germinal Centers	15 (27.2%)	2 (11.1%)
w/o Germinal Centers	30 (54.5%)	14 (77.8%)
Granulomatous	9 (16.4%)	1 (5.2%)

All values listed as number (percentage of cases) representing each histologic subtype.
Histologic Subtypes of Adverse Local Tissue Reaction.

ISSN: 1472-6890