Paprosky Classification (Femoral Bone Loss)
Derives the Paprosky type (I, II, IIIA, IIIB or IV) of femoral bone loss before revision hip arthroplasty.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Metaphysis
- Extensive bone loss, not supportive
- Diaphysis
- Extensive bone loss
- Isthmus
- Supportive
- Intact diaphysis available for a scratch fit
- Less than 4 cm
Result: Paprosky femoral type IIIB: extensive metaphyseal and diaphyseal bone loss with less than 4 cm of intact diaphyseal bone for a scratch fit.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Metaphysis
- Diaphysis
- Isthmus
- Intact diaphysis available for a scratch fit
How this is calculated
Citation
Aribindi R, Barba M, Solomon MI, Arp P, Paprosky W. Bypass fixation. Orthop Clin North Am. 1998;29(2):319-329. Criteria as tabulated in Ibrahim DA, Fernando ND. Clin Orthop Relat Res. 2017;475(3):917-921. Read the sources: Aribindi 1998 ↗, Ibrahim 2017 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.