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<gallery widths=200 heights=200>>File:Hip prosthesis zones by DeLee and Charnley system, and Gruen system.jpg|Hip prosthesis zones according to DeLee and Charnley,<ref>{{cite book|title=The Adult Hip, Volume 1|url=https://books.google.com/books?idReport=-fwULYB1gJIC&pg=PA958|author=John J. Callaghan, Aaron G. Rosenberg, Harry E. Rubash|publisher=Lippincott Williams & Wilkins|year=2007|isbn=978Further follow-0-7817-5092-9|pageup reports should include at least:<ref name=958}}<SOA/ref> and Gruen.<ref>{{cite journal|last1=Neumann|first1=Daniel R.P.|last2=Thaler|first2=Christoph|last3=Hitzl|first3=Wolfgang|last4=Huber|first4=Monika|last5=Hofstädter|first5=Thomas|last6=Dorn|first6=Ulrich|title=Long-Term Results *Absence of change in position, or a Contemporary Metal-on-Metal Total Hip Arthroplasty|journal=The Journal description of Arthroplasty|volume=25|issue=5|year=2010|pages=700–708|issn=0883-5403|doi=10any change.1016/j.arth.2009.05.018}}</ref> These are used to describe the location *Absence or of for example areas loosening, or a description of looseningit.</gallery>
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==Quality checking==*The referral or complementary information needs to specify the type of prosthesis and when it was inserted.<ref name=SOA>{{cite web|url=http://www.ortopedi.se/pics/1/5/Hoftradiologisk_undersokning.pdf|title=Hip - Radiologic evaluation of prosthetic surgery (Swedish title: HÖFT - Radiologisk undersökning vid proteskirurgi)|website=Swedish Orthopaedic Association (SOA)|author=Radiologists: Torsten Boegård, Mats Geijer, Marianne Petrén-Mallmin. Orthopedic surgeons: Lennart Sanzén, Christer Strömberg, Torbjörn Ahl}} Publication #18, 2006</ref>*Images that need to be available include the first postoperative ones, as well as the most recent previous exam.<ref name=SOA/> ==First postoperative image: Configuration==
Post-operative projectional radiography ("X-ray") is routinely performed to ensure proper configuration of hip prostheses.
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[[File:Hip prosthesis zones by DeLee and Charnley system, and Gruen system.jpg|thumb|250px|Hip prosthesis zones according to DeLee and Charnley,<ref>{{cite book|title=The Adult Hip, Volume 1|url=https://books.google.com/books?id=-fwULYB1gJIC&pg=PA958|author=John J. Callaghan, Aaron G. Rosenberg, Harry E. Rubash|publisher=Lippincott Williams & Wilkins|year=2007|isbn=978-0-7817-5092-9|page=958}}</ref> and Gruen.<ref>{{cite journal|last1=Neumann|first1=Daniel R.P.|last2=Thaler|first2=Christoph|last3=Hitzl|first3=Wolfgang|last4=Huber|first4=Monika|last5=Hofstädter|first5=Thomas|last6=Dorn|first6=Ulrich|title=Long-Term Results of a Contemporary Metal-on-Metal Total Hip Arthroplasty|journal=The Journal of Arthroplasty|volume=25|issue=5|year=2010|pages=700–708|issn=0883-5403|doi=10.1016/j.arth.2009.05.018}}</ref> These are used to describe the location of for example areas of loosening.]] '''Cement''' coverage is regarded as acceptable when there are no translucent zones on an anteroposterior image in at least 6 of 7 Gruen-zones.<ref name=SOA/> Absence of cement in zone 7 (medially-proximally) needs to be noted. On a lateral image, the distal tip of the prosthesis should be centered, and not be in contact with the cortex.<ref name=SOA/> The cup should not have translucent zones in zone 1 and 2. It is acceptable to have translucent zones in parts of zone 3.<ref name=SOA/> ===Report===The postoperative report should include:<ref name=SOA/>*Prosthesis configuration. If the report is likely to undergo double reading, the parameters need to be given in numbers even if within normal limits.*Cement coverage. ==Further follow-ups: Complications==Further follow-ups after the initial postoperative image are focused on various complications.
===Dislocation===
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On radiography, it is normal to see thin radiolucent areas of less than 2 mm around hip prosthesis components, or between a cement mantle and bone. However, these may still indicate loosening of the prosthesis if they are new or changing, and areas greater than 2 mm may be harmless if they are stable.<ref name="RothMaertz2012"/> The most important prognostic factors of cemented cups are absence of radiolucent lines in DeLee and Charnley zone I, as well as adequate cement mantle thickness.<ref>{{cite book|title=The Well-Cemented Total Hip Arthroplasty: Theory and Practice|url=https://books.google.se/books?id=PQ6NZAeJUXcC&pg=PA337&lpg=PA336|author=Steffen Breusch, Henrik Malchau|publisher=Springer Science & Business Media|year=2005|isbn=978-3-540-24197-3|page=336}}</ref> In the first year after insertion of uncemented femoral stems, it is normal to have mild subsidence (less than 10 mm).<ref name="RothMaertz2012">{{cite journal|last1=Roth|first1=Trenton D.|last2=Maertz|first2=Nathan A.|last3=Parr|first3=J. Andrew|last4=Buckwalter|first4=Kenneth A.|last5=Choplin|first5=Robert H.|title=CT of the Hip Prosthesis: Appearance of Components, Fixation, and Complications|journal=RadioGraphics|volume=32|issue=4|year=2012|pages=1089–1107|issn=0271-5333|doi=10.1148/rg.324115183}}</ref>
==References==
{{Reflist}}
