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Wheeless' Textbook of Orthopaedics

Osteochondral Fractures of the Patella



- See:
      - bipartite patella
      - pediatric avulsion fractures
      - patellar dislocation

- Discussion:
    - are primarily of two types;
    - direct blow, or more commonly patellar dislocation, may cause an
            immediate frx around the point of contact, separating a single
            fragment that includes articular cartilage, subchondral bone, and
            supporting trabecular bone.
    - this piece may never displace, and in this case fracture usually heals
            with time and causes little trouble;
    - however, fragment may displace and become a mechanically troublesome loose body;
    - excision has been recommended in these situations but, for large fragments,
          stabilization by transosseous fixation with Herbert screw has been described.





Osteochondritis dissecans of the patella. MRI evaluation and a case report.

Team physician #8. Osteochondritis dissecans of the patella in a competitive fencer. A case report and review of the literature.





Original Text by Clifford R. Wheeless, III, MD.