Heterotopic Ossification of the Peroneus Longus Tendon in the Retromalleolar Portion with the Peroneus Quartus Muscle: A Case Report

<div>Microphotograph of the resected heterotopic ossification. Lamellar bone formation with an extensive cartilage metaplasia partly with mixed tissue of fat and necrotic muscle. Calcification and cartilage metaplasia existed in the transitional zone between the ossification and the remaining tendon, that is, endochondral ossification. Scale bar, 100 <i>μ</i>m.</div>

Case Reports in Orthopedics

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Figure 6

Figure 6: Heterotopic Ossification of the Peroneus Longus Tendon in the Retromalleolar Portion with the Peroneus Quartus Muscle: A Case Report 