PMC7184821_01
a Sagittal STIR (short T1 inversion recovery) of the left hip joint before treatment with HBO shows geographical subarticular area of high-signal intensity in the head of femur involving 45% of the femoral head (stage IC, severe). No detected structural collapse of the head. b Sagittal STIR of the left hip after treatment shows that decrease in the subarticular is of high-signal intensity involving about 25% of the femoral head (stage IB, moderate) denoting improvement of the condition.
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F1
HBO therapy (daily sessions which last 2 h with a pressure of 2.5 PSI). He reported marked improvement of hip pain (pain score 4), with concomitant improvement of MRI findings at 6 months after treatment (Fig. 1).
PMC7184821_02
a Sagittal T2 fat suppressed image of the left shoulder before treatment with hyperbaric oxygen shows subarticular geographical areas of high-signal intensity involving about 45% of the head of the humerus (stage IC, severe). No detected structural collapse of the head. Also noted geographical high-signal intensity in the proximal shaft. b Sagittal T2 fat suppressed image of the left shoulder after treatment shows nearly stable appearance of subarticular areas of high-signal intensity in the head of the humerus. However, significant improvement is noted in the proximal shaft with absence of high-signal intensity.
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F2
Subjectively, she felt minimal improvement in her shoulder pain (pain score 6), although her MRI done 1 year after her treatment showed significant partial improvement (Fig. 2).
PMC7184821_03
a Sagittal STIR (short T1 inversion recovery) of the left hip joint before treatment with hyperbaric oxygen shows geographical subarticular areas of high-signal intensity in the head of the femur involving 35% of the femoral head with no definite collapse (stage IC, severe). b Sagittal STIR of the left hip after treatment shows an increase in the areas of high-signal intensity involving now about 45% of the femoral head with subchondral cystic changes (stage IIC, severe) denoting worsening of the condition.
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F3
She received 39 sessions of HBO (daily session, which last 2 h with pressure of 2.5 PSI). She reported no changes in her hip pain (pain score 6), and MRI of the hips done 1 year after treatment showed deterioration of the lesions (Fig. 3).