PMC9343214_01
T2-weighted axial magnetic resonance image of meso-type Os acromiale.
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fig1
Clinical and radiological diagnosis was confirmed (Figure 1).
Arthroscopic image of the prepared bony surfaces prior to fixation.
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fig2
A bone shaver is utilised to debride the nonunion and prepare the bony surfaces for fusion (Figure 2).
Arthroscopic image of the final position following fixation.
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fig3
The wires are measured and appropriately sized self-drilling self-tapping full thread 3.0 mm cannulated compression screws (Medartis AG, Switzerland) are placed percutaneously under constant visualisation to ensure that reduction is maintained (Figure 3).
Postoperative radiograph of the final position of the screws.
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fig4
The headless screws are buried within the bone to prevent symptomatic hardware (Figure 4). Postoperative X-ray radiographs were taken at 2 weeks follow-up (Figure 4).