Mean 5-Year Clinical and Radiographic Outcomes of Cementless Total Hip Arthroplasty in Patients under the Age of 30

Table 1

Patient demographics, perioperative data, and component data.

Demographics
Age at surgery [mean (range)]	22 (15–29)
Gender	24 F (60%)
	16 M (40%)
BMI [mean (range)]	27 (19–43)
Side	19 L (47.5%)
	21 R (52.5%)
Prior-hip surgery	20 (50%)
Charnley class A	21 (52.5%)
Charnley class B	10 (25%)
Charnley class C	9 (22.5%)
Diagnosis
OA secondary to pediatric hip diseases	21 (52.5%)
Avascular necrosis (AVN)	12 (30%)
Inflammatory arthritis	3 (7.5%)
Failed hip fusion	2 (5%)
Septic arthritis	1 (2.5%)
Posttraumatic arthritis	1 (2.5%)
Perioperative data
Estimated blood loss [mean (95% CI)]	456 (374–537)
Postoperative transfusions	6 (15%)
Intraoperative fractures	2 (5%)
Posterior approach	30 (75%)
Anterolateral approach	8 (20%)
Direct lateral approach	2 (5%)
Femoral component
Modular cementless stem	17 (42.5%)
Nonmodular cementless stem	23 (57.5%)
Acetabular component
Monoblock CoCr Cup	21 (52.5%)
Titanium cup with coCr insert	6 (15%)
Titanium cup with polyethylene insert	13 (32.5%)
Articulation
Metal-on-metal	27 (67.5%)
Metal-on-conventional polyethylene	11 (27.5%)
Metal-on-highly cross-linked polyethylene	1 (2.5%)
Metal-on-vitamin E cross-linked polyethylene	1 (2.5%)
Femoral head size
22 mm to 28 mm	14 (35%)
32 mm to 38 mm	12 (30%)
40 mm to 56 mm	14 (35%)