Is there some sort of problem with china making pharmaceutical products? It's possible to buy enough estradiol raws to last someone years, so I'm grateful for that backup plan if I can't ever get my medication through the medical system here.

No, no problem. I just was pointing out that you are naive if you think getting stuff from China is somehow avoiding big business and mass manufacturing. You made it sound like TW all are making estradiol from growing your own soybeans in yams in your own yard or buying it from from a craft compounding operation that makes up bespoke formulations from home-grown or artisan ingredients.

Sorry I was never in sports, I guess? I was a band and dance nerd in school

Just because you didn't personally do sports in school means you've never known or noticed any girls or women who did? I've never played American football, basketball or golf, but I've seen quite a few Super Bowls, NBA championships and golf tourneys on TV. I can reel off the names of big sports stars in men's sports that I've never played and never had a chance of playing. I've never competed in the Olympics, but I've watched a lot of Olympics coverage.

Lots of people watch and follow sports they don't do personally. I really don't get this kind of weird world view that you have. Life must be dull if you only pay attention to things that directly affect you personally.

Since you insist you are a woman and you say you have always believed yourself to be female, it seems odd to me that you have so little information and curiosity about female anatomy and physiology. To fill you in: teenage girls and women who do sports have MUCH higher rates of lower limb injuries than males. This is due to physical factors like the changes in ligaments, tendons and muscles over the course of the monthly ovulation-menstruation cycle and the greater Q angle that girls develop as they undergo skeletal growth and their pelvis and hips widen. And it's due to the fact that pretty much all sports training is based on and geared towards male bodies.

Female athletes are at a higher risk for ACL injuries than males. The risk of ACL injuries in female teenage athletes is up to six times higher than in male athletes of the same age, competing in the same sports. The risk of an ACL injury is highest in the 15-19 age groups and among those playing sports such as soccer, volleyball and basketball. The majority of ACL injuries are non-contact injuries resulting from landing from a jump, performing a cutting maneuver, or decelerating suddenly.

One of the biological reasons female athletes are at higher risk is that their hips are wider than males. This characteristic makes them great squatters but puts their Q-angle at a higher degree than males This Q-angle which is about 18 degrees, where as a male’s is about 12 degrees, tends to cause a Valgus position (shown below). Video analysis has shown that during landing, cutting and decelerating movements on occasions when injury occurred, the knee or knees tended to be in (or very close to) full extension; the body’s center of mass was behind and away from the weight bearing limb and the knee was in a valgus position — i.e., with the hip internally rotated and adducted and the tibia externally rotated.

https://demonactivities.com/acl-prevention/

Although the same anatomical and physiological factors that affect girls and women doing sports affect girls and women who dance, in some fields of dance such as traditional ballet the training that girls get starting in childhood is protective:

The increased incidence of anterior cruciate ligament (ACL) injuries in female athletes, particularly in sports like soccer, led to a similar analysis in dancers. The ACL is one of the four critical stabilizing ligaments in the knee, and an injury to it can be devastating, requiring surgical repair and/or 9-12 months of rehabilitation.

Interestingly, the incidence of ACL injury in female ballerinas is relatively low. At the Harkness Center for Dance Injuries, research showed that the jump training young dancers received in traditional ballet programs reduced their risk of such injuries compared to other female athletes. The emphasis on landing a jump with the balls of the feet first promotes a protective knee bend on impact. Indeed, research in female soccer players concurrently revealed that improper landing technique and a quadriceps/hamstring strength imbalance contributed significantly to their higher incidence of ACL injuries versus males. It is now recommended that female athletes learn how to land from a jump correctly (bending the knees to absorb the shock of landing) and undergo directed hamstring strengthening as part of a standard preventative program.

ACL injuries can and do occur in dancers—they are just at lower risk than other female athletes.

https://www.rmaeug.com/danceakp.html