摘要
To the Editor:Clinically,it is not rare for patients with bilateral non-traumatic osteonecrosis of femoral head(NONFH)first presenting to an orthopedic surgeon with one hip that requires total hip arthroplasty(THA)and another asymptomatic or less symptomatic one that potentially needs hip preservation surgery.
基金
This work was supported by grants from the National Natural Science Foundation of China(No.81703896,81673776)
the Capital Health Research and Development of Special(No.2016-2-4062)
Beijing Municipal Science and Technology Commission(No.Z 171100001017209)
National Key Research and Development Program of China(No.2017YFC0108102).
