My dog's leg makes knuckling sounds. Is glucosamine the right fix?
Hi and thank you for your post on Petco Pet Education Center, formerly Petcoach!
The knuckling sound you hear is likely the sound of bone on bone in the joints which is a common sign of osteoarthritis. The Chondroitin, Glucosamine, and MSM tablet you are giving her is a great supplement to her normal diet. While the tablet will not cure the arthritis, it will help prevent and slow down the breakdown of further joint cartilage. Sometimes the signs of osteoarthritis are subtle and may not be obvious until it becomes more advanced, however it appears you are on top of it with Mary.
The other supplement I would recommend is omega 3 fatty acids which are also very good for the joints. Most of these come in gel capsules or liquid. You may ask your veterinarian if they carry any Omega 3 Oils for Mary.
Swimming is also excellent for joint health and is great low impact exercise with dogs with osteoarthritis.
I don't believe there is anything to worry too much about right now unless you notice the knuckling sounds gets worse or her symptoms become more pronounced. You may watch out for decreased appetite, walking slower, disinterest in going up and down stairs, disinterest in walking, running, or her usual activities. These can be signs her arthritis is advancing. As osteoarthritis advances, pain medication may be given to help by your veterinarian.
I hope this helps and best wishes to you and Mary!
Updated on September 23rd, 2025