157. Case study: Frozen shoulder or misdiagnosis? Physio Edge Shoulder Success podcast with Jo Gibson
Aug 17, 2023
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Jo Gibson, a Upper Limb Rehabilitation Specialist Physio, discusses a case study of a misdiagnosed frozen shoulder that turns out to be extra pulmonary TB. The podcast highlights the importance of considering other diagnoses for frozen shoulder and the risk factors associated with TB. It also emphasizes the need for cautious evaluation and further imaging when symptoms don't align with a frozen shoulder diagnosis.
Consider alternative diagnoses in patients with atypical frozen shoulder symptoms and utilize blood tests and MRI imaging for accurate diagnosis.
When evaluating patients with shoulder symptoms, it is important to consider travel history, ethnicity, and potential exposure to tuberculosis (TB) as it can affect joints and bones and mimic frozen shoulder symptoms.
Deep dives
Diagnosis of Frozen Shoulder
The podcast episode discusses a case study of a patient who was initially diagnosed with a frozen shoulder but presented with atypical symptoms. The patient was 38 years old, with no specific risk factors for frozen shoulder. The symptoms did not fit the typical pattern of insidious onset and gradual loss of movement associated with frozen shoulder. Further examination revealed restriction in external rotation, but the stiffness did not have the typical acute pain phase. The patient had been experiencing symptoms for eight months, but an initial x-ray was normal. Eventually, the patient was diagnosed with extra-pulmonary tuberculosis, which affects joints and bones in 1-10% of cases. This case highlights the importance of considering alternative diagnoses in patients with atypical symptoms and the potential value of blood tests and MRI imaging for accurate diagnosis.
Risk Factors and Prevalence of TB
The podcast episode discusses the risk factors and prevalence of tuberculosis (TB), particularly in relation to shoulder involvement. TB is a bacterial infection that is most commonly associated with pulmonary symptoms, but can also affect joints and bones. High-risk areas include countries like India, Pakistan, Romania, Bangladesh, Somalia, Asia, and sub-Saharan Africa. Certain comorbidities like HIV, diabetes, end-stage chronic kidney disease, and immunosuppressive drugs increase the risk of TB. Deprived populations, such as the homeless, also have higher TB rates. It is important to consider travel history, ethnicity, and potential exposure to TB when evaluating patients with atypical shoulder symptoms.
X-Ray and Differential Diagnosis
The podcast episode discusses the value of x-rays and differential diagnosis in patients with suspected frozen shoulder. While most patients with a diagnosis of frozen shoulder have normal x-rays, some cases may present with features that do not fit the typical pattern. Studies have shown that frozen shoulder is often misdiagnosed, and conditions like malignancy or TB can mimic the symptoms. The decision to perform an x-ray should be based on local pathway protocols, but other imaging modalities like MRI may be more sensitive. When symptoms do not align with frozen shoulder, it is crucial to ask more questions, consider blood tests, and explore alternative diagnoses to ensure appropriate management.
When a patient presents with a potential frozen shoulder, what other differential diagnoses must be considered? Find out in this podcast with Jo Gibson (Upper Limb Rehabilitation Specialist Physio), exploring the case study of a patient diagnosed with “frozen shoulder” with symptoms that don’t quite match a typical frozen shoulder. What’s the diagnosis of this patient’s stiff shoulder?
You’ll also discover whether an X-ray or imaging is required when a patient presents with a stiff or frozen shoulder.