Is it normal for your knee replacement to snap when you put your leg into a frog leg type position?  

Clunk. A clunk is common wit hmedial lateral stress avoid strange poistion if they dont have a little medlateralplay then the joints are tight and too stiff makes you appreciate the original.
Knee snapping. Yes. At the extremes of the range of joint motion, sounds like "snapping" are more likely to occur in both normal and artificial joints. The frog-legged position puts your knees through a relatively extreme position.

Related Questions

Is it normal for the kneecap to hurt real bad when trying to lift leg 6 days after knee replacement?

Yes, you are using- -& any increase in muscle contraction increases pressure in the muscle & the body complains vigorously & lets you know about it. Also remember 6 days is not very long. It is normal & will improve rapidly barring any setbacks. Read more...

Lower leg and foot go numb and tingly turning purplish when sit or stand, also colder that othr leg. Normal for knee replacement??

Ischemia vs neuropat. Ischemia refers to lack of or inadequate blood flow. Peripheral vascular (or arterial) disease refers to poor circulation to legs such that they can hurt & feel cold. If this has only happened since your knee replacement, please see your Orthopedic surgeon as well as your Family Doc. They can start w/non-invasive ankle brachial index & then consider angiogram if indicated. Also test for neuropathy. Read more...

How long should one put off a knee replacement if you have grade 4 arthritis?

As long as you can. Tolerate the pain without hurting something else. Read more...
Pain level. The decision for knee replacement should be made based on your level of pain and possible deformity to the knee secondary to arthritis. I am a physician that believes a knee replacement should not be limited by age. If a 50 year old needs a knee replacement then it should be done. I would build up the muscles around the knee which will help during the rehab process. Be in the best shape possible. Read more...