Figure 10.

Poorly performed biopsies: (a) Avoid transverse incision in the extremity because this is difficult to excise with definitive resection. (b) Never biopsy through buttock as this is the flap for the coverage in the hind quarter amputation if required. (c) Never biopsy through rectus femoris; very important for knee extension (d) Poor biopsy: Long incision and widely placed sutures marks will require excision of wide area of skin and under lying tissues if salvage surgery is contemplated and the wound closure may be compromised