Table 4: Studies of patients <30 years old with majority noninflammatory arthritis treated with cementless total hip arthroplasty (sorted by mean followup).

StudyKamath et al. [8]Costa et al. [5]Clohisy et al. [4, 13]Current StudyRestrepo et al. [10, 14]Nizard et al. [9]Dudkiewicz et al. [6]Girard et al. [7]Wangen et al. [11]

Year pub201220122010201320082008200320102008

Mean age (range)18 (13–20)20 (13–30)20 (12–25)22 (15–29)17.64 (13.5–20)23.4 (13–30)23.2 (14–29)25 (15–30)25 (15–30)

Patients (hips)17 (20)40 (53)88 (102)34 (40)25 (35)94 (108)56 (69)34 (47)44 (49)

Mean F/U (years)4.14.655.46.66.97.4913

Prior operations80%*0%Unknown50%20%18%High27.70%Unknown

% Inflammatory arthritis0%0%12%7%26%13%29%4%0%

Surgical approach100% post100% ALPost and AL75% post 20% AL
5% DL
100% AL90% Post
6% DL
4% AL
Unknown100% postPost and DL

Cementless stems95%100%95%100%100%53%91.30%94%100%

Cementless cups100%100%100%100%100%92%91.30%100%100%

Articulation70% COC
30% MOXLP
100% MOP45% MOXLP
29% MOP
14% COC
7% COXLP 5% MOM
67.5% MOM 27.5% MOP
5% MOXLP
5% MOEP
63% COXLP
31% MOP
6% COC
100% COC100% MOP100% MOM (Metasul)100% MOP

Infections0%1.9%1%2.5%0%0%4.3%4.3%Unknown

Dislocations0%0%3.9%10%0%1.9%7.2%2.1%6.1%

Femoral aseptic Revision rate0%0%0%5%**0%4.6%4.3%0%0%

Acetabular aseptic revision rate0%1.9%2.9%2.5%**0%13.9%15.9%4.3%49%

Overall aseptic revision rate5%3.8%7%7.5%**0%15.7%15.9%4.3%49%

Majority of prior operations were core decompression procedures for avascular necrosis.
Failure rates for reasons other than metallosis are listed for the current study.
Post: posterior approach, AL: anterolateral approach, DL: direct lateral approach.
COC: ceramic on ceramic, MOXLP: metal on highly cross-linked polyethylene, MOP: metal on polyethylene, MOEP: metal on E-polyethylene, COXLP: ceramic on highly cross-linked polyethylene, MOM: metal on metal.