Definition of phlegm for English Language Learners. : 1  a thick, yellowish liquid that is produced in the nose and throat especially when a person has a cold. : 2  calmness in a difficult or unpleasant situation.
Kneecap (Patellar) Subluxation. A subluxing patella (kneecap) is a temporary, partial dislocation of the kneecap from its normal position in the groove in the end of the thigh bone (femur). This groove is located between two bumps at the end of the thigh bone called the femoral condyles.
Luxating patella (or trick knee, subluxation of patella, floating patella, or floating kneecap) is a condition in which the patella, or kneecap, dislocates or moves out of its normal location.Patellar luxation is a common condition in dogs, particularly small and miniature breeds.ften a dog owner might be told that his or her pet has  loose knee , but this is not a medical term, and it is not correct to use it interchangeably with Luxating Patella. Luxating Patella cannot be present without the knee being loose, but a loose knee is not necessarily slipping out of the joint.