Key result
Computed tomography and magnetic resonance imaging are both accurate for measuring bone loss in recurrent shoulder instability using the circle method, despite difficulties assessing track lesions.
Why the study?
Does computed tomography (CT) scan or magnetic resonance imaging (MRI) provide better measurement of bone loss in recurrent shoulder instability?
Does computed tomography (CT) scan or magnetic resonance imaging (MRI) provide better measurement of bone loss in recurrent shoulder instability?
The circle technique remains the preferred method for determining individual patient treatment for recurrent shoulder instability, as differences between CT and MRI for determining on- versus off-track lesions are clinically imperceptible.
When measuring bone loss in recurrent shoulder instability, both computed tomography (CT) scan and magnetic resonance imaging (MRI) are accurate using the circle method. However, measurement of on- versus off-track lesions can be inconsistent, and measuring Hill-Sachs lesions on MRI relative to an extrapolated rotator cuff attachment is difficult. In the end, determination of on- versus off-track treatment is quite difficult, and for this determination, differences between CT scan and MRI may be clinically imperceptible. Thus, for now, we, and we believe, other surgeons will continue to stick with the circle technique when determining individual patient treatment for recurrent shoulder instability.
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Provencher et al. (2019) conducted an editorial in Recurrent shoulder instability. Computed tomography (CT) and magnetic resonance imaging (MRI) was evaluated on Measurement of bone loss. Computed tomography and magnetic resonance imaging are both accurate for measuring bone loss in recurrent shoulder instability using the circle method, despite difficulties assessing track lesions.
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