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- Possible if knee is flexed about 30 deg ➔ Reference from the Blumensaat line; it should be inline with the inferior pole of the patella
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- Separation of cartilage sleeve from patellar ossified nucleus
- Can be inferior pole (more common) or proximal pole
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- Undisplaced (SLR ok) = cylindrical cast for 4-6/52
- Displaced (loss of extensor mechanism) = ORIF
- Tension band OR Transosseous suturing (Gavin says now a days most use transosseous suturing)
- It is actually a large fragment not seen on XR
- Local paper by Arjandas et al. 2008 follow up of 11 patients; 5 displaced needing TBW - good results in TBW with all having no pain of discomfort with FROM
- KKH teaching - they still use TBW most of the time.
