| KO | keep on; keep open; killed organism; knee orthosis; knock out |
|---|---|
| PK | penetrating keratoplasty; pericardial knock; pharmacokinetics; pig kidney; Prausnitz-Kustner [reacti... |
| HK | hand to knee; heat-killed; heel-to-knee; hexokinase; human kidney |
| TKA | total knee arthroplasty; transketolase activity; trochanter, knee, ankle |
| AK | Above the Knee |