Figure 2
From: Hybrid SPECT/CT for the assessment of a painful hip after uncemented total hip arthroplasty
Gruen zones and crucial fixation zones of two standard stems in THA. A) Example of a diaphyseal or distal locking stem, crucial fixation zones marked with the black line (zones 2-6) B) Example of a stem with metaphyseal/diaphyseal fixation, crucial fixation zones marked with the black line (zones 1,2,6,7). Zones of the cup are numbered (I-III), I for the superior third, II for the intermediate third and III for the inferior third.