The Influence of Tribological Pairings and Other Factors on Migration Patterns of Short Stems in Total Hip Arthroplasty

Table 1

Patient demographics and implant characteristics at 24-month follow-up.

(a) Implant variables

Type	Acetabular cup size	Acetabular insert material
METHA: 40; Nanos: 14	size 46: 1; size 48: 5; size 50: 9; size 52: 9; size 54: 11; size 56: 10; size 58: 7; size 60: 2	Polyethylene: 20 (total); 15 (METHA-stem); 5 (Nanos-stem); Ceramic: 34 (total); 25 (METHA-stem); 9 (Nanos-stem)

(b) Patient variables

Age (y)	Sex	Weight (kg)	Height (cm)
Median: 58 (range: 36–72)	Male: 22; female: 32	Median: 80; (range: 56–107)	Median: 172; (range: 140–190)