The residency situation in podiatry can be confusing. I'll try to clear some of it up.
Years ago residencies were not required. Many people just learned on the job. Some lucky folks managed to get in with someone already in practice and learn from them. Sort of ad hoc residency. Gradually all of the states began to require a minimum of one year residency training. Each state practice board could make those decisions. Each state also has its own scope of practice laws. That can certainly add some confusion.
A short couple of years ago there were 5 basic residencies offered. POR (Podiatric Orthopedic Residency) primarily biomechanical, RPR (Rotating Podiatric Residency), PPMR (Podiatric Primary Medicine Residency), PSR-12 and PSR 24 (Surgical in months). Many residencies were 2 or 3 years long by either combining programs (i.e. a PPMR year followed by a PRS-12 year), or by allowing 2 years to complete a 1 year program (some of that was to allow enough time to accumulate the required numbers of cases). Some were pyramid programs, where for example there might be 5 PPMR slots for the first year and only 2 PSR slots for the second year. That could get competetive and I don't think would make for a good climate.
You can see how that might get confusing. Hard to tell what kind of experience someone might have even if you knew what kind of residency they did.
About 2 years ago the wheels were set in motion to change the residencies. There are now 2 residencies offered. PM&S-24 and PM&S-36. (Podiatric Medicine and Surgery - number of months) Most residencies have converted (or ar in the process) to the new model. Both offer surgical training, as well as general podiatric medicine. They are essentially 1 year of any of the previous non-surgical combined with 1-2 years of surgical training. There are required numbers of cases that need to be met within a variety of categories. The primary difference is that the PM&S-36 requires rearfoot and ankle surgery training. This difference also rolls over into Board certification. Those with PM&S-24 training may only sit for the ABPS (American Board of Podiatric Surgery) Forefoot board certification. Those with PM&S-36 training may sit for both the Forefoot and Rearfoot/Reconstructive Ankle surgery boards. Those graduating in 2003 may still sit for the Rearfoot boards provided they completed a PSR-24 program.
Many of the programs are still in transition, and may be listed under the old terms. Expect this to continue changing. By the time the current incoming class is interviewing for residencies I would expect practically all to be converted to the new model.
Hope this helps.