Anatomy of the Knee

[Jeff_Beish]

I am not sure exactly how I ruined my knees since I practiced Judo from the age of 11 (1952) until around1989 and karate/kenpo from age 20 until I forget when, maybe in the 1970's. However, in 1998, or so, after I had gained too much weight I went on a diet and began walking for a mile at lunch time until retiring in 2001, then continued for a few years after that. But I increased the walking to 6 miles each morning. In 2009 both knees had worn down bone on bone, so I had both replaced and they have been working fine since then.

Early in my Judo times we did some stupid duck walks and similar knee stressing exercises that no doubt contributed to my knee problems. I should have listened to people who told me never to stress my knees more than 90-degrees, but being a young upstart, I didn't listen closely. Even in my more active practicing days I started having knee pains, so stopped the stressing them so much.

Not sure how karate affected my knees, it seemed that if it did it was subtle, and I never noticed any problems. Yes, the knee is very complex, and they are easily ruined if one puts too much stress on them and especially when squatting down so they flex 90-degrees or more.

 

[HighKick]

Where did you complete your degree in stem cell science?

I’ll be sure to tell ‘them’ you don’t want it.

Where did I claim to have a degree in stem cell? I certainly do not. But I have a very, very extensive in common sense (and two Master degrees in engineering). When multiple doctors and white papers speak out against the validity of certain uses for stem cells, I pay attention.
As someone north of 30 surgeries and very bad 'itis' symptoms, I pay attention to potential methods to improve the condition.

 

[Gyakuto]

Where did I claim to have a degree in stem cell? I certainly do not.

But you were being cynical about research from people who do have high qualifications in that field, so that suggested you know something about the field. It’s clear you don’t. Some people think all opinions are valid and equal; they are not.

But I have a very, very extensive in common sense (and two Master degrees in engineering).

Why did you bother to do a second one. Most of us aim a little higher after getting the first

When multiple doctors and white papers speak out against the validity of certain uses for stem cells, I pay attention.

Then reserve your opinion until that point, perhaps.

As someone north of 30 surgeries and very bad 'itis' symptoms, I pay attention to potential methods to improve the condition.

You sound like a bitter, cynical person and opinions from such a person just jump on the hope of the rest of us.

 

[Gyakuto]

I am not sure exactly how I ruined my knees since I practiced Judo from the age of 11 (1952) until around1989 and karate/kenpo from age 20 until I forget when, maybe in the 1970's. However, in 1998, or so, after I had gained too much weight I went on a diet and began walking for a mile at lunch time until retiring in 2001, then continued for a few years after that. But I increased the walking to 6 miles each morning. In 2009 both knees had worn down bone on bone, so I had both replaced and they have been working fine since then.

The human body isn’t designed to function well much beyond 30-40 years old. You’re probably suffering from age-related degeneration, but this kind of research does offer the prospect of some amelioration of your symptoms.

Early in my Judo times we did some stupid duck walks and similar knee stressing exercises that no doubt contributed to my knee problems.

Oh I remember those…and bunny hops. Luckily I couldn’t do them, so I didn’t.

I should have listened to people who told me never to stress my knees more than 90-degrees, but being a young upstart, I didn't listen closely.

Well the ‘retrospectivescope’ is a powerful instrument….

Not sure how karate affected my knees, it seemed that if it did it was subtle, and I never noticed any problems. Yes, the knee is very complex, and they are easily ruined if one puts too much stress on them and especially when squatting down so they flex 90-degrees or more.

The whole cartilage surface area of both knees is about 120cm^2 and they’re only about 0.2cm thick! It’s incredible they last as long as they do!

 

[HighKick]

But you were being cynical about research from people who do have high qualifications in that field, so that suggested you know something about the field. It’s clear you don’t. Some people think all opinions are valid and equal; they are not.

Why did you bother to do a second one. Most of us aim a little higher after getting the first

Then reserve your opinion until that point, perhaps.

You sound like a bitter, cynical person and opinions from such a person just jump on the hope of the r

But you were being cynical about research from people who do have high qualifications in that field, so that suggested you know something about the field. It’s clear you don’t. Some people think all opinions are valid and equal; they are not.

Why did you bother to do a second one. Most of us aim a little higher after getting the first

Then reserve your opinion until that point, perhaps.

You sound like a bitter, cynical person and opinions from such a person just jump on the hope of the rest of us.

Why did you bother to do a second one. Most of us aim a little higher after getting the first

Because the company I worked for at the time fully paid for a dual Mas program. One is purely electrical engineering and one is engineering management. These have worked well together for me. Pursuing a doctorate in the field would be on my nickel and would gain me absolutely nothing at my station in life. My integration/consulting company has long been established, I am a P.E., and do not feel the need or want to waste the time. I have several monikers I could add to my title(six sigma black belt, CQA, MQM, and more), but never feel compelled. I am pursuing a theological doctorate for my own edification but will never title myself as such.

FWIW, "most of us" do Not pursue a doctorate. Most of us just go to work. I hold this in much higher regard.

Then reserve your opinion until that point, perhaps.

Oh, to be sure, it is happening according to the information that is out there. Just like you, I follow the information that is available.
And this is an open forum. Anything within the forum rules can be said, so I reserve the right.

You sound like a bitter, cynical person and opinions from such a person just jump on the hope of the rest of us.

Not bitter and definitely not cynical, but I am a staunch realist. Some real bad things happened to me that were completely out of my control, and they changed they trajectory of my life. Plus, in my competition years, I was hard on my body.
But I have persevered and have a great life. That doesn't mean life has not been hard. I have zero understanding why you think expressing certain life occurrences 'labels' me in any way. I am just a guy. They are your words, and honestly, the amount to less than d**k to me.

 

[Jeff_Beish]

The human body isn’t designed to function well much beyond 30-40 years old. You’re probably suffering from age-related degeneration, but this kind of research does offer the prospect of some amelioration of your symptoms.

Oh I remember those…and bunny hops. Luckily I couldn’t do them, so I didn’t.

Well the ‘retrospectivescope’ is a powerful instrument….


The whole cartilage surface area of both knees is about 120cm^2 and they’re only about 0.2cm thick! It’s incredible they last as long as they do!

Yes, I was better at half my age for sure. My knee problems were hurt more from arthritis, so my knee doc said. Plus, being overweight for some years. I did push myself too much in all the walking, when I was in my 60's. Wasn't thinking.

I attended a Judo Class in the Theory of Judo, Self Defense, and the Art of Resuscitation under the direction of Professor Seigen Tamaki (hachidan) at the Ryukyu University in Naha, Okinawa. I should have remembered more from the classes about taking care of my knees. I did learn some spine manipulation though. Bunny hops and deep knee bends were verboten I those days.

Yes, with the complexity and thin cartilage material, it is a miracle we can walk past 5 years old.

Seems like people still hate us engineers. That's alright, my pay checks were huge anyway.

 

[Gyakuto]

Yes, I was better at half my age for sure. My knee problems were hurt more from arthritis, so my knee doc said. Plus, being overweight for some years. I did push myself too much in all the walking, when I was in my 60's. Wasn't thinking.

You might find this interesting -

I attended a Judo Class in the Theory of Judo, Self Defense, and the Art of Resuscitation under the direction of Professor Seigen Tamaki (hachidan) at the Ryukyu University in Naha, Okinawa. I should have remembered more from the classes about taking care of my knees. I did learn some spine manipulation though. Bunny hops and deep knee bends were verboten I those days.

As I like to say, the retrospectivescope is a powerful instrument!

Yes, with the complexity and thin cartilage material, it is a miracle we can walk past 5 years old.

Ha ha, yes indeed. Knee cartilage is called hyaline cartilage because it’s glassy and slippery (and when fresh it has a blueish tinge). But there’s an even tougher cartilage called fibrocartilage that is very wear resistant. We have it in our temporomandibular joint allowing us to make chewing movements for many, many decades!

Seems like people still hate us engineers. That's alright, my pay checks were huge anyway.

That’s because you all smell faintly of machine oil and are very handy around the house…we’re jealous!

 

[Jeff_Beish]

You might find this interesting -

As I like to say, the retrospectivescope is a powerful instrument!

Ha ha, yes indeed. Knee cartilage is called hyaline cartilage because it’s glassy and slippery (and when fresh it has a blueish tinge). But there’s an even tougher cartilage called fibrocartilage that is very wear resistant. We have it in our temporomandibular joint allowing us to make chewing movements for many, many decades!

That’s because you all smell faintly of machine oil and are very handy around the house…we’re jealous!

My problem is being old enough to see the world of computing change from analog to digital. After my BSEE I continued into Industrial Automatic Control, then before ending that degree they changed it to Computer Science! We also transited from tubes to solid state and then modern stuff. They hated us more so.

I just revised my Martial Arts Resume so my children and grandchildren will read it in year to come and know something about their blood line. With a small amount of vanity left in my old ages here is it: https://www.alpo-astronomy.org/jbeish/Resume_of_Judo.pdf After reading the old one my wife reminded me that I left some out.

 

[Gyakuto]

My problem is being old enough to see the world of computing change from analog to digital. After my BSEE I continued into Industrial Automatic Control, then before ending that degree they changed it to Computer Science! We also transited from tubes to solid state and then modern stuff. They hated us more so.

No! That makes you endearing!

I just revised my Martial Arts Resume so my children and grandchildren will read it in year to come and know something about their blood line. With a small amount of vanity left in my old ages here is it: https://www.alpo-astronomy.org/jbeish/Resume_of_Judo.pdf After reading the old one my wife reminded me that I left some out.

Brilliant! That’ really good!

 

[HighKick]

I am not sure exactly how I ruined my knees since I practiced Judo from the age of 11 (1952) until around1989 and karate/kenpo from age 20 until I forget when, maybe in the 1970's. However, in 1998, or so, after I had gained too much weight I went on a diet and began walking for a mile at lunch time until retiring in 2001, then continued for a few years after that. But I increased the walking to 6 miles each morning. In 2009 both knees had worn down bone on bone, so I had both replaced and they have been working fine since then.

Early in my Judo times we did some stupid duck walks and similar knee stressing exercises that no doubt contributed to my knee problems. I should have listened to people who told me never to stress my knees more than 90-degrees, but being a young upstart, I didn't listen closely. Even in my more active practicing days I started having knee pains, so stopped the stressing them so much.

Not sure how karate affected my knees, it seemed that if it did it was subtle, and I never noticed any problems. Yes, the knee is very complex, and they are easily ruined if one puts too much stress on them and especially when squatting down so they flex 90-degrees or more.

I have nothing other than my own experiences and what others have said, but I feel the repeated over-extending of my knees did as much or more harm than squatting too much or too far.
My Ortho said as much based on how the articulations were worn. Knee replacements have been Very good for me.