Table 4.
Case series of patients with positive metal patch testing results.
| Cases | Age, sex | Type of surgery | MPT type | Surgical status | Positive metal | Judgment based on ICDRG criteria using clinical photographs | Replaced surgical material | Postoperative status |
|---|---|---|---|---|---|---|---|---|
| Case 1 | 73, F | THA | As is | Performed | Cobalt-chromium alloy | + | Titanium | Good |
| Case 2 | 55, F | CPO | Both | Performed | Titanium alloy | IR | ETHIBOND EXCEL Ethicon, Inc. (Bridgewater, NJ) | Good |
| Case 3 | 34, F | CPO | Metal series | Performed | Cobalt chloride, potassium dichromate, nickel sulfate | Cobalt chloride (?) Potassium dichromate (?) Nickel sulfate (++) |
Absorbent screw | Good |
| Case 4 | 60, F | THA | As is | Canceled | Zirconium alloy | IR | N/A | N/A |
CPO, curved periacetabular osteotomy; IR, irritant reaction (false-positive); ICDRG, International Contact Dermatitis Result Grading; N/A, not applicable.