3-D acetabular morphology of patients with excellent outcome
Now open: Certificate Course in Management of Covid-19 by Govt. Of Gujarat and PlexusMDKnow more...Now open: Certificate Course in Management of Covid-19 by Govt. Of Gujarat and PlexusMDKnow more...
Rotational acetabular osteotomy (RAO) is a type of pelvic osteotomy performed on patients with acetabular dysplasia to increase acetabular bony coverage against the femoral head. The current research compared the characteristics of three-dimensional acetabular morphology with long-term excellent outcome after RAO to patients with normal hip joints and those transferred to complete hip arthroplasty (THA) after RAO due to OA progression.

Anteroposterior plain radiograph and CT data of 57 hip joints (17 joints with excellent outcome 20 years or more after RAO, 16 normal joints, and 20 joints converted to THA after RAO) were analyzed. The 2-D lateral center-edge (CE) angle from plain radiographs and acetabular anteversion, anterior acetabular sector angle, and posterior sector angle from computed tomography (CT) images were calculated.

Results:
--Compared with patients converted to THA, all parameters in patients with long-term excellent outcome after RAO were similar to those in patients with normal hip joints, particularly in the three-dimensional analyses.

--The anterior bony coverage was excessive, whereas the posterior bony coverage was deficient in patients converted to THA after RAO.

--Anterior bony impingement and posterior instability may be the cause of OA progression after RAO.

To summarize, caution must be exercised during RAO to avoid unnecessarily rotating the split fragment to the anterior direction in order to prevent OA progression and achieve a long-term excellent outcome.

Source: https://josr-online.biomedcentral.com/articles/10.1186/s13018-021-02346-0
Like
Comment
Share