The phrase "weak ligaments" means that the bands of tissue in our body that connect our bones and hold our joints together are not very strong or sturdy. Full definition
Some dogs are born with weak ligaments, which allow the TEG to pop out of its normal position and look like a pink roundish object in the inside corner of the eye. (animaleyecare.net)
Shallow femoral groove, weak ligaments and mal - alignment of the tendons and muscles that straighten the joint are all conditions that will predispose a dog toward luxating patellae. (petsmagazine.com.sg)
This leads to weak ligaments and tendons that are not in line with the joint in the dog's knee. (second-opinion-doc.com)