TY - JOUR

T1 - Outcome of 881 total hip arthroplasties in 747 patients 21 years or younger

T2 - data from the Nordic Arthroplasty Register Association (NARA) 1995–2016

AU - Halvorsen, Vera

AU - Fenstad, Anne Marie

AU - Engesæter, Lars B.

AU - Nordsletten, Lars

AU - Overgaard, Søren

AU - Pedersen, Alma B.

AU - Kärrholm, Johan

AU - Mohaddes, Maziar

AU - Eskelinen, Antti

AU - Mäkelä, Keijo T.

AU - Röhrl, Stephan M.

PY - 2019/7/4

Y1 - 2019/7/4

N2 - Background and purpose — The literature is scarce on the outcome of the youngest patients with total hip arthroplasties (THAs). We analyzed register data, revision risk, and related factors in patients 21 years or younger with THAs in the Nordic Arthroplasty Register Association (NARA). Patients and methods — We included all THA patients 21 years or younger reported during 1995 through 2016 to the Danish, Finnish, Norwegian, and Swedish hip arthroplasty registers and merged these into the NARA dataset. Primary outcome was any implant revision. Results — We identified 881 THAs in 747 patients. Mean age at primary surgery was 18 years (9–21). The indications for THA were pediatric hip diseases (33%), systemic inflammatory disease (23%), osteoarthritis (4%), avascular necrosis (12%), hip fracture sequelae (7%), and other diagnoses (21%). Unadjusted 10-year survival for all THAs was 86%. Comparison between indications showed no differences in survival. Uncemented implants were used most frequently. Survival for uncemented and cemented implants was the same adjusted for sex, indication, head size, and time period for primary surgery. Aseptic loosening was the main cause of revision. Interpretation — Both cemented and uncemented fixations seem to be a viable option in this age group, but with a lower implant survival than in older patient groups.

AB - Background and purpose — The literature is scarce on the outcome of the youngest patients with total hip arthroplasties (THAs). We analyzed register data, revision risk, and related factors in patients 21 years or younger with THAs in the Nordic Arthroplasty Register Association (NARA). Patients and methods — We included all THA patients 21 years or younger reported during 1995 through 2016 to the Danish, Finnish, Norwegian, and Swedish hip arthroplasty registers and merged these into the NARA dataset. Primary outcome was any implant revision. Results — We identified 881 THAs in 747 patients. Mean age at primary surgery was 18 years (9–21). The indications for THA were pediatric hip diseases (33%), systemic inflammatory disease (23%), osteoarthritis (4%), avascular necrosis (12%), hip fracture sequelae (7%), and other diagnoses (21%). Unadjusted 10-year survival for all THAs was 86%. Comparison between indications showed no differences in survival. Uncemented implants were used most frequently. Survival for uncemented and cemented implants was the same adjusted for sex, indication, head size, and time period for primary surgery. Aseptic loosening was the main cause of revision. Interpretation — Both cemented and uncemented fixations seem to be a viable option in this age group, but with a lower implant survival than in older patient groups.

U2 - 10.1080/17453674.2019.1615263

DO - 10.1080/17453674.2019.1615263

M3 - Journal article

C2 - 31088343

AN - SCOPUS:85065790948

VL - 90

SP - 331

EP - 337

JO - Acta Orthopaedica

JF - Acta Orthopaedica

SN - 1745-3674

IS - 4

ER -