EnglishPURPOSE: There is a lot of inter-individual variation in the rotational anatomy of the distal femur. This study was set up to define the rotational anatomy of the distal femur in the osteo-arthritic knee and to investigate its relationship with the overall coronal alignment and gender. METHODS: CT-scans of 231 patients with end-stage knee osteo-arthritis prior to TKA surgery were obtained. This represents the biggest series published on rational geometry of the distal femur in literature so far. RESULTS: The posterior condylar line (PCL) was on average 1.6° (SD 1.9) internally rotated relative to the surgical transepicondylar axis (sTEA). The perpendicular to trochlear anteroposterior axis (⊥TRAx) was on average 4.8° (SD 3.3°) externally rotated relative to the sTEA. The relationship between the PCL and the sTEA was statistically different in the different coronal alignment groups (p < 0.001): 1.0° (SD 1.8°) in varus knees, 2.1° (SD 1.8°) in neutral knees and 2.6° (SD 1.8°) in valgus knees. The same was true for the ⊥TRAx in these 3 groups (p < 0.02).There was a clear linear relationship between the overall coronal alignment and the rotational geometry of the distal femur. For every 1° in coronal alignment increment from varus to valgus, there is a 0.1° increment in posterior condylar angle (PCL vs sTEA). CONCLUSION: The PCL was on average 1.6° internally rotated relative to the sTEA in the osteo-arthritic knee. The relationship between the PCL and the sTEA was statistically different in the different coronal alignment groups.
Coronal alignment is a predictor of the rotational geometry of the distal femur in the osteo-arthritic knee / Luyckx, T; Zambianchi, F; Catani, Fabio; Bellemans, J; Victor, J.. - In: KNEE SURGERY, SPORTS TRAUMATOLOGY, ARTHROSCOPY. - ISSN 0942-2056. - ELETTRONICO. - 21(10)(2013), pp. 2331-2337.
| Data di pubblicazione: | 2013 |
| Titolo: | Coronal alignment is a predictor of the rotational geometry of the distal femur in the osteo-arthritic knee. |
| Autore/i: | Luyckx, T; Zambianchi, F; Catani, Fabio; Bellemans, J; Victor, J. |
| Autore/i UNIMORE: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/s00167-012-2306-x |
| Rivista: | |
| Volume: | 21(10) |
| Pagina iniziale: | 2331 |
| Pagina finale: | 2337 |
| Codice identificativo ISI: | WOS:000324641800021 |
| Codice identificativo Scopus: | 2-s2.0-84884531087 |
| Codice identificativo Pubmed: | 23184086 |
| Citazione: | Coronal alignment is a predictor of the rotational geometry of the distal femur in the osteo-arthritic knee / Luyckx, T; Zambianchi, F; Catani, Fabio; Bellemans, J; Victor, J.. - In: KNEE SURGERY, SPORTS TRAUMATOLOGY, ARTHROSCOPY. - ISSN 0942-2056. - ELETTRONICO. - 21(10)(2013), pp. 2331-2337. |
| Tipologia | Articolo su rivista |
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