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Old 01-24-2009, 12:14 PM   #1 (permalink)
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Default Jaw locking

Hi guys,

I am new to this forum, my boxer lock the jaw (in open position) after yawning, not frequent, maybe once each month, usually when he is under stress, like when he barks to the pleople walking near the house or when he see other dogs, please give some advice. what I have to do? Thx in advance. Regards

Sinchi

PS: My dog is a male, 1 year old, sorry for my bad english.
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Old 01-24-2009, 03:29 PM   #2 (permalink)
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Default Re: Jaw locking

Welcome to BF! And, your English is just fine... Don't know how to help you, but thought I'd respond to bump this thread up. Maybe someone else can help?
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Old 01-24-2009, 03:36 PM   #3 (permalink)
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Default Re: Jaw locking

Welcome to the forum from me and Newt!.... I have never heard of this before but I googled it and this was a letter to a woman in the US about her Boxer having Lock Jaw......


"Tetanus (lock jaw) does occur in dogs sometimes, but is pretty rare in the United States. That might be why your vet is baffled (assuming you're in the U.S)

Tetanus is caused by an anaerobic (living in environments free of oxygen) bacteria, Clostridium tetani, that is spread by a penetrating wound or by contamination of an already existing wound. It is killed by digestive enzymes, and therefore does not cause illness when ingested. Clostridium tetani produces two toxins, one of which, tetanospasmin, causes a blockage of neuromuscular transmission--that is, paralysis. The blockage is irreversible and recovery relies on the creation of new nerve cells.

Signs of the illness can take up to three weeks to develop after exposure has occurred. Paralysis can be localized, affecting only one limb (the one nearest the offending wound), or generalized, affecting all four legs. Death can follow due to respiratory arrest, and only occurs in those cases that go undiagnosed.

Recommended treatments include an antitoxin, antibiotics, sedatives, and even surgery.
A full recovery is likely for dogs, and should only take about three to four weeks, but that's with treatment. This condition will not just go away on it's own! Left untreated, it can be fatal.

If your local vet doesn't know how to treat this disease, you need to get a referral from your vet to a larger vet practice, or a university veterinary teaching hospital. Please do not delay in getting your dog treated."

You can read more about Tetanus here:

http://www.provet.co.uk/health/diseases/tetanus.htm

http://www.seefido.com/canine-dog-healt ... etanus.htm

http://www.marvistavet.com/html/tetanus_in_pets.html

Hope this helps some, I have no clue about this at all but figured you may want to read this?
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Old 01-24-2009, 04:00 PM   #4 (permalink)
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Default Re: Jaw locking

Welcome to the forum! I can't add any more to what Vedra said above. Good luck!
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Old 01-24-2009, 04:03 PM   #5 (permalink)
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Default Re: Jaw locking

Does his jaw lock as if in a spasm? Does he seem to be aware of you if you speak to him or call his name when it happens?
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Old 01-25-2009, 01:52 PM   #6 (permalink)
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Default Re: Jaw locking

Sinchi.......... How are things today?........ Please keep us in formed!!!
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Old 02-20-2009, 03:01 PM   #7 (permalink)
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Default Re: Jaw locking

My 16 month old boxer has been having a lock jaw probably lately also. In the last 2 weeks or so I've noticed that he has trouble closing his mouth after yawning. It only takes a few seconds to close but I hear a pop when it does close. He doesn't seem to be in any pain when it happens but it worries me. If anyone else has any ideas of what could be causing this I'd appreciate it.
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Old 02-20-2009, 03:16 PM   #8 (permalink)
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Default Re: Jaw locking

I was trying to find an article I had read but can't find it but it talked about a dog that had trouble closing its mouth and it was a problem (if I remember correctly) about a slipping mandible (jaw bone); it slips out of place so the jaw can't close and then when it slips back into place they can close, sometimes you can hear it pop back in place. I believe it said it could be from an injury or a deformity in the jaw. This was a while back so I don't know if I remember it correctly or not but I would take him to the vet to be on the safe side. Let us know how it goes.
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Old 02-20-2009, 03:25 PM   #9 (permalink)
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Default Re: Jaw locking

OK, I did find this:

If the former (open position), with clicking noises, it's as you suggested, most likely a problem with the temporomandibular joint. This can arise from trauma (causing TMJ luxation or subluxation) or from developmental issues (dysplasia - although as the report I've included below suggests, is rare).

Hopefully the examination and tests (such as x-rays) your vet performs will help figure things out, and rule out other things that can mimic diseases of the TMJ such as masticatory muscle myositis and orbital disease. Good luck.

Title: A case of temporomandibular dysplasia: surgical treatment
Author(s): Libermann S, Durieux P
Source: POINT VETERINAIRE 31 (211): 61-65 NOV-DEC 2000
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