Reference no: EM133357301

Questions: Provide a robust feedback and engage in conversation with your classmates.

1. Is information in the discussion correct? Do you agree with the identification of homeostatic mechanism parts that your classmate has identified?

2. Did you choose the same example to discuss? Did you find any additional information about the example that you can share?

3. Did you choose a different example to discuss? Are there any similarities between examples? Are there any glaring differences?

The knee is a synovial joint that is made of the patella, the distal end of the femur, and the proximal end of the tibia. Some soft tissue features of the knee are the anterior and poster cruciate ligament and the medial and lateral collateral ligament. Flexion, extension, medial and lateral rotation are movements the knee makes all in the sagittal plane. An ACL tear is a pretty common injury especially among young athletes. I work in an orthopedic clinic and see this mostly present in soccer or football. The injury is a result of over-stretching or completely tearing the ligament. If it is a tear it may be a part or complete one. Mild ACL tears have the potential to heal on their own, but most do require surgery to fix. An MRI would be used to determine the severity of the tear and the need for surgical intervention. Patients can expect a great functional deficit in the knee with this kind of tear. Full knee extension would be difficult. It could also affect the patients balance as the ACL helps to steady the joint.

The thumb is made of the distal and proximal phalanx and the trapezium. It has three joints namely interphalangeal, metacarpophalangeal, and carpometacarpal joints. The thumb is able to complete flexion, extension, anteposition, retroposition, and opposition at the CMC joint. The tendon of extensor pollicus longus runs up the thumb. Texter's thumb is another common condition seen at my work, it is also known as acquired trigger finger. It results from the narrowing of the flexor tendon sheath which can cause a clicking sensation when the patient goes to extend their thumb. It is mostly caused by overuse of the thumb over many years of texting, computer use, or even writing. Patients will typically come in with extreme stiffness and LOM in that they are unable to really extend their thumb fully. Hence why it is called a "trigger" finger because their finger (can be any not just the thumb) is stuck in the trigger position. It is acquired because it is from years of overuse. Treatment usually involves what is called an A1 pulley release which allows the flexor tendons to move through the tendon sheath without getting stuck.