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Diagnosing Skier's Thumb: What Tests Should You Expect?
Published: Sep 29, 2024
Accurate diagnosis of skier's thumb is crucial for proper treatment. Understanding the tests involved can help you feel more prepared and informed.
The Physical Exam
Your doctor will start by examining your thumb visually and through touch. They'll look for swelling and tenderness around the base of your thumb. The key test is called the valgus stress test. Your doctor will gently try to move your thumb away from your hand to check its stability. This might feel uncomfortable but is important for assessing the extent of the injury.
Imaging Tests
X-rays are often the first imaging test used. They can show if there's a small bone fragment broken off where the ligament attaches, which can happen in some cases of skier's thumb. If more detail is needed, your doctor might order an ultrasound or MRI. These tests can provide a clearer picture of the soft tissues, including the ligament itself.
Stress Radiography
In some cases, your doctor might perform a stress radiograph. This involves taking X-rays while applying gentle pressure to your thumb, similar to the valgus stress test. It allows them to see how much your thumb joint moves under stress, which can indicate the severity of the ligament injury.
Frequently Asked Questions
They may cause mild discomfort but shouldn't be extremely painful.
The physical exam is quick, imaging tests might take 30-60 minutes.
Not necessarily, your doctor will determine which are most appropriate.
In most cases, yes, but sometimes further evaluation may be needed.
Wrapping Up
While the diagnostic process might seem complex, each test plays a role in ensuring you get the right treatment.
References
- Rashidi A, Haj-Mirzaian A, Dalili D, et al. Evidence-based use of clinical examination, ultrasonography, and MRI for diagnosing ulnar collateral ligament tears of the metacarpophalangeal joint of the thumb: systematic review and meta-analysis. Eur Radiol 2021; 31:5699.
- Melville DM, Jacobson JA, Fessell DP. Ultrasound of the thumb ulnar collateral ligament: technique and pathology. AJR Am J Roentgenol 2014; 202:W168.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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