Presentation
Twisted knee at soccer.
Patient Data
Age: 25
Gender: Male
From the case:
Fabella
{"study":{"id":26013,"case_slug":"fabella-2","modality":"X-ray","series":[{"id":5088142,"content_type":"image/jpeg","frames":[{"id":5088142,"width":650,"height":968,"current":true}],"annotations":[],"encodings":{"original_dicom":null,"video":null,"thumbnailed_files":[{"tiny":"b2d169b7655fe6326fc7bf66fa4df8_tiny.JPG","jumbo":"b2d169b7655fe6326fc7bf66fa4df8_jumbo.JPG","small":"b2d169b7655fe6326fc7bf66fa4df8_small.JPG","thumb":"b2d169b7655fe6326fc7bf66fa4df8_thumb.JPG","medium":"b2d169b7655fe6326fc7bf66fa4df8_medium.JPG","gallery":"b2d169b7655fe6326fc7bf66fa4df8_gallery.JPG","big_gallery":"b2d169b7655fe6326fc7bf66fa4df8_big_gallery.JPG","original":"b2d169b7655fe6326fc7bf66fa4df8.JPG"}]},"perspective":"Frontal","specifics":null},{"id":5088150,"content_type":"image/jpeg","frames":[{"id":5088150,"width":879,"height":1416,"current":true}],"annotations":[],"encodings":{"original_dicom":null,"video":null,"thumbnailed_files":[{"tiny":"b6fbd7ad01531eb058285e1f7ec511_tiny.JPG","jumbo":"b6fbd7ad01531eb058285e1f7ec511_jumbo.JPG","small":"b6fbd7ad01531eb058285e1f7ec511_small.JPG","thumb":"b6fbd7ad01531eb058285e1f7ec511_thumb.JPG","medium":"b6fbd7ad01531eb058285e1f7ec511_medium.JPG","gallery":"b6fbd7ad01531eb058285e1f7ec511_gallery.JPG","big_gallery":"b6fbd7ad01531eb058285e1f7ec511_big_gallery.JPG","original":"b6fbd7ad01531eb058285e1f7ec511.JPG"}]},"perspective":"Lateral","specifics":null}],"caption":{"us":null,"gb":null},"findings":{"us":"","gb":""},"contributor_login":"henryknipe","case_id":25865,"case_key_image_id":null,"case_featured_at":null},"current_user":null,"access":{"can_edit":false,"can_download":true,"can_feature":false,"can_pin":true}}
No fracture. Small knee joint effusion. Incidental note of fabella.
From the case:
Fabella
{"study":{"id":26014,"case_slug":"fabella-2","modality":"Annotated image","series":[{"id":5088158,"content_type":"image/jpeg","frames":[{"id":5088158,"width":650,"height":968,"current":true}],"annotations":[],"encodings":{"original_dicom":null,"video":null,"thumbnailed_files":[{"tiny":"942ba1c0d4de1f92712aa0ddae19af_tiny.jpg","jumbo":"942ba1c0d4de1f92712aa0ddae19af_jumbo.jpg","small":"942ba1c0d4de1f92712aa0ddae19af_small.jpg","thumb":"942ba1c0d4de1f92712aa0ddae19af_thumb.jpg","medium":"942ba1c0d4de1f92712aa0ddae19af_medium.jpg","gallery":"942ba1c0d4de1f92712aa0ddae19af_gallery.jpg","big_gallery":"942ba1c0d4de1f92712aa0ddae19af_big_gallery.jpg","original":"942ba1c0d4de1f92712aa0ddae19af.jpg"}]},"perspective":null,"specifics":null}],"caption":{"us":null,"gb":null},"findings":{"us":"","gb":""},"contributor_login":"henryknipe","case_id":25865,"case_key_image_id":null,"case_featured_at":null},"current_user":null,"access":{"can_edit":false,"can_download":true,"can_feature":false,"can_pin":true}}
Red circle highlights position of the fabella on the frontal projection.
Case Discussion
This case is a good example of a large fabella, especially on the frontal projection where they are not as readily identified.