%0 Journal Article %T Muscular strength and function after total hip arthroplasty performed with three different surgical approaches: one %A Jomar Klaksvik %A Olav A Foss %A Otto S Husby %A Siri B Winther %A Tina S Wik %A Vigdis S Husby %J HIP International %@ 1724-6067 %D 2019 %R 10.1177/1120700018810673 %X Surgical approach influences short-term muscular strength, and leg-strength asymmetry has been demonstrated after total hip arthroplasty (THA). We evaluated muscular strength, physical function and patient-reported outcome measures (PROMs) up to 12£¿months postoperatively, in patients operated on using 3 different surgical approaches. 60 patients scheduled for primary THA were allocated to the direct lateral (DLA), posterior (PA) or anterior (AA) approach. The following parameters were evaluated: leg press and abduction strength, pain, 6-minute walking test, Harris Hip Score and Hip disability and Osteoarthritis Outcome Score - Physical Function Shortform (HOOS-PS). Abduction strength in the DLA group was significantly more reduced than the PA and AA groups 12£¿months postoperatively (p < 0.001). A significant interleg difference in abduction (p < 0.01) and leg press (p < 0.03) persisted in all groups up to 6£¿months, and up to 12£¿months in the DLA (p < 0.05). In the AA group, interleg difference in leg press was present up to 12£¿months (p = 0.01). Pain scores were higher in the DLA than the AA group at 6£¿months (p = 0.01). Patients in the PA group had better HOOS-PS score than those in the DLA group 3£¿months postoperatively (p = 0.02). No intergroup differences in pain or PROMs were found 12£¿months postoperatively. Patients operated via the DLA had reduced muscular strength, HOOS-PS scores and higher pain scores than those who underwent PA and AA type surgery. The non-operated leg was significantly stronger than the operated leg in all groups 6£¿months postoperatively and this persisted up to 12£¿months postoperatively for the DLA and AA groups. Clinical Trial Protocol number: ClinicalTrials.gov (NCT01506024) %K Fast-track %K follow-up %K muscle strength %K surgical approach %K total hip arthroplasty %U https://journals.sagepub.com/doi/full/10.1177/1120700018810673