Limb Lengthening Forum

Limb Lengthening Surgery => Limb Lengthening Discussions => Topic started by: MrJames on September 04, 2019, 04:25:46 PM

Title: Ratio calculation (max ratio value)
Post by: MrJames on September 04, 2019, 04:25:46 PM

hi,

Ratio:
tibia / femur = 0.8  means tibia = 0.8 * femur, so tibia = 80% of femur
femur / tibia = 1.2 means femur = 1.2 * tibia, so femur = 120% of tibia



This is the average calculation that everyone knows.

for example femur - tibia = 0.8 - max?


What is the maximum value for healthy?



Thanks.

Title: Re: Ratio calculation (max ratio value)
Post by: whyme on September 04, 2019, 05:17:53 PM

0.6?  ;D

Title: Re: Ratio calculation (max ratio value)
Post by: MrJames on September 05, 2019, 06:46:40 AM

Quote from: whyme on September 04, 2019, 05:17:53 PM

0.6?  ;D

:)

I think 0.6 is too low.

Nobody knows the min and max values?

Title: Re: Ratio calculation (max ratio value)
Post by: Infinity on September 05, 2019, 12:33:53 PM

Quote from: tanerjames on September 04, 2019, 04:25:46 PM

hi,

Ratio:
tibia / femur = 0.8  means tibia = 0.8 * femur, so tibia = 80% of femur
femur / tibia = 1.2 means femur = 1.2 * tibia, so femur = 120% of tibia



This is the average calculation that everyone knows.

for example femur - tibia = 0.8 - max?


What is the maximum value for healthy?



Thanks.

To maintain aesthetics and good functional recovery, one's tibiae should be with in 70-90% of the femur length. This is the MAXIMUM, ideally its better to stay between 75-85% of femur length.

Title: Re: Ratio calculation (max ratio value)
Post by: MrJames on September 06, 2019, 09:33:57 AM

Quote from: Infinity on September 05, 2019, 12:33:53 PM

To maintain aesthetics and good functional recovery, one's tibiae should be with in 70-90% of the femur length. This is the MAXIMUM, ideally its better to stay between 75-85% of femur length.

Thanks