title: AAHKS Symposium: State-of-the-Art Management of Tough and Unsolved Problems in Hip and Knee Arthroplasty.
abstract: Incompletely solved problems in hip and knee arthroplasty present ongoing practice challenges.
  
  
  
  Content experts summarized treatment options and preferred treatment methods for 4 incompletely solved problems in hip and knee arthroplasty.
  
  
  
  The problems chosen for discussion in this symposium included 2 soft tissue problems: chronic extensor mechanism deficiency after total knee arthroplasty and abductor deficiency after total hip arthroplasty (THA), recurrent infection after a 2-stage procedure for infected THA or total knee arthroplasties, and pelvic discontinuity after THA.
  
  
  
  The approaches outlined may provide guidance on management of these different problems. For surgeons and others in the orthopedic community interested in innovation, these challenges also present ripe opportunities to improve the care of patients with unmet needs.
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Berry
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.
authors.forename: Rafael J
authors.initials: RJ
authors.lastname: Sierra
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.
authors.forename: Arlen D
authors.initials: AD
authors.lastname: Hanssen
authors.affiliation: Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania.
authors.forename: Neil P
authors.initials: NP
authors.lastname: Sheth
authors.affiliation: Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois; Department of Orthopedic Surgery, Northwestern University School of Medicine, Central DuPage Hospital, Chicago, Illinois.
authors.forename: Wayne G
authors.initials: WG
authors.lastname: Paprosky
authors.affiliation: Division of Adult Reconstruction, Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois.
authors.forename: Craig J
authors.initials: CJ
authors.lastname: Della Valle
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D006801:Humans; D008279:Magnetic Resonance Imaging; D009985:Orthopedics / Q000379:methods*; D010388:Pelvis / Q000601:surgery; D012008:Recurrence
keywords: arthroplasty; complications; hip; knee; treatment