In 1978, Enneking and Dunham5 classified pelvic lesion resections into three main types:
Type I: resection confined to ilium.
Type II: resection confined to the periacetabulum.
Type III: Resection confined to the pubis.
Pure Type I or Type III resections do not require acetabular resection. Pelvic osseous integrity and strength is still maintained even though a large portion of bone may be resected.
Only with a Type II resection does the patient need consideration for limb sparing surgery or hemipelvectomy. Most of the cases discussed in this presentation have at least a Type II resection.
That being said, there is oftentimes much crossover and resections have to be classified as such. A lesion involving the pubis and the acetabulum would usually elicit Type II/III resection.
Type 1 resection.6
Type I/II/III resection. Post-op infection.
Type III resection.6
**NOTE THAT LESIONS CAN CROSS ZONES AND STILL HAVE A SINGLE TYPE RESECTION**
THIS IS USUALLY CONCERNING METASTASIS WHERE THE ENTIRE LESION CANT BE RESECTED.