Can liposuction make it easier to maintain my limb's shapes (especially thighs) when I was at my lowest weight?

Hi, thank you for sharing your question. 
It is difficult to answer this question without a photo, however, the stability of liposuction lies in the sense that the fat cells have been removed permanently. The remaining cells can grow should you gain weight. 
Consult with a board certified plastic surgeon to review your options. I hope this helps. Best of luck!

if you are stable with your weight, liposuction can help with your body shaping and fat maintenance. internal wellness such as hormonal optimization is best for long term.  Please see an expert to determine what is best for you.  Best, Dr. Emer.

If your weight is stable, you can expect long term improvement from liposuction.  Fat cells can always increase in size with weight gain, though the number of fat cells is decreased with liposuction.  Liposuction in one area depletes fat cells in that area.  As a result, if a patient gains weight, the fat will be stored in other areas of the body preferentially.  Recommend that you consult with a board certified PS to determine if lipo would give you the smaller, sculpted thighs and arms you desire.

Trustworthy I appreciate your concerns, however a more concise and detailed answer cannot be offered without photos. Liposuction is an excellent option to remove areas of well defined fat unresponsive to diet and exercise. Consult with a board-certified plastic surgeon in your area to explore the best options for you. Good luck.

Good morning, if your weight is stable, liposuction can help you shape your body and maintain fat. successes !! . Please consult a board certified surgeon. !!

Yes high definition VASER liposuction is very efficient tool for removing stubborn fat from the arms and thighs. The Gold Standard for superior liposuction results requires use of the advanced technology of ultrasound assisted VASER liposuction. As an official trainer of VASER liposuction, I perform full body liposuction cases every week. VASER liposuction has been the only modality that has consistently resulted in outstanding liposuction outcomes. VASER liposuction ensures a smooth contour regardless of degree of excess fat by virtue of being able to remove any and all remaining fat comprehensively and uniformly. If skin redundancy is observed, Renuvion technology can be simultaneously applied to tighten your skin to optimize your overall contour outcome. A Skype or FaceTime consultation with a VASER specialist will help you get an accurate recommendation and pricing.
Respectfully, 
Arian Mowlavi MD, FACS
Realself 100 Hall of Fame Inductee