Patellar chondromalacia
When I try to fully extend my knee, I feel a bone catching, but I never experience pain.
I have seen a traditional Chinese medicine practitioner who diagnosed me with patellar degeneration and treated me with acupuncture and tui na.
I also consulted a tui na therapist who suggested that a misalignment of my calf bones is causing a gap.
Recently, I visited an orthopedic doctor who, through palpation, diagnosed me with congenital patellar chondromalacia.
However, an ultrasound performed at National Taiwan University showed no abnormalities.
The doctor has now scheduled me for an MRI, which indicated a discoid meniscus.
I researched and found that the meniscus is a part of the cartilage, so could this also be a form of patellar chondromalacia? Additionally, which doctor's advice should I follow? What exactly is my condition? If it is indeed a discoid meniscus, what should I do? Why was the ultrasound unable to detect anything?
Ah Hui, 20~29 year old female. Ask Date: 2005/01/08
Dr. Su Yiren reply Orthopedics
Dear Miss Ah-Hui,
I apologize for the delayed response due to the busy work during the New Year.
Regarding the diagnosis of knee joint-related diseases, relying solely on physical examination (as mentioned by traditional Chinese medicine practitioners, massage therapists, and the first Western physician) has historically been inaccurate.
In the 1980s, when arthroscopy technology matured, studies were conducted to assess the accuracy of physical examinations (PE).
The results indicated an accuracy of only about 75-84%.
Therefore, orthopedic surgeons often encounter patients with a positive anterior drawer test who actually have a torn posterior cruciate ligament (PCL), rather than the anterior cruciate ligament (ACL) as textbooks suggest.
Furthermore, in medicine, what is referred to as the "final result" is often not the "ultimate truth." Naturally, the more advanced the examination, the more truths it can reveal; otherwise, why would they charge so much? Thus, the hierarchy of diagnostic tools is as follows: arthroscopy > MRI > ultrasound > X-ray > physical examination.
Physicians must integrate all levels of information to uncover the "complete final truth."
Dr.
Su Yi-Ren
Reply Date: 2005/01/08
More Info
Patellar chondromalacia, often referred to as "runner's knee," is a condition characterized by the softening and breakdown of the cartilage on the underside of the kneecap (patella). This condition can lead to pain, swelling, and difficulty in knee movement, particularly when extending the knee or during activities that put stress on the knee joint. Understanding the diagnosis and treatment options for this condition is crucial for effective management.
Diagnosis
The diagnosis of patellar chondromalacia typically involves a combination of clinical evaluation and imaging studies. A healthcare provider may perform a physical examination, assessing the knee for tenderness, swelling, and range of motion. They may also conduct specific tests to evaluate the stability and function of the knee joint.
In your case, the initial assessments by both traditional Chinese medicine practitioners and Western medicine practitioners have led to different conclusions. The traditional Chinese medicine approach focused on potential structural issues, while the Western physician diagnosed you with congenital patellar chondromalacia based on physical examination findings. The subsequent ultrasound did not reveal any abnormalities, which can sometimes happen as ultrasound is not always the best imaging modality for assessing cartilage conditions.
The MRI, which is a more sensitive imaging technique, is crucial for evaluating soft tissue structures, including cartilage and menisci. If the MRI indicates a "disk-shaped meniscus," this refers to a specific anatomical variant of the meniscus that can sometimes be associated with knee pain and instability. While the meniscus is indeed a type of cartilage, it is distinct from the articular cartilage of the patella.
Treatment Options
Treatment for patellar chondromalacia typically starts conservatively. Here are some common approaches:
1. Physical Therapy: A physical therapist can develop a tailored exercise program to strengthen the muscles around the knee, particularly the quadriceps, hamstrings, and hip muscles. This can help stabilize the patella and reduce symptoms.
2. Activity Modification: Avoiding activities that exacerbate symptoms, such as running or jumping, can help alleviate pain. Low-impact exercises like swimming or cycling may be recommended.
3. Pain Management: Nonsteroidal anti-inflammatory drugs (NSAIDs) can help reduce pain and inflammation.
4. Bracing or Taping: Knee braces or patellar taping techniques can provide additional support and alignment for the patella during activities.
5. Surgical Options: If conservative treatments fail and symptoms persist, surgical options may be considered. This could include procedures to smooth the cartilage surface, realign the patella, or repair any meniscal tears.
Conclusion
It is essential to follow up with your healthcare provider regarding the MRI results and discuss the implications of a disk-shaped meniscus. While it may not be directly related to patellar chondromalacia, it could contribute to your knee symptoms.
In terms of which physician's advice to follow, it is often beneficial to seek a second opinion, especially from an orthopedic specialist who focuses on knee conditions. They can provide a comprehensive evaluation and help clarify the relationship between your symptoms, the MRI findings, and the best course of action.
Ultimately, understanding the nature of your knee condition and the appropriate treatment options will empower you to make informed decisions about your health and recovery.
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