case_images: PMC11780159_01
case_images: A and B: AP and Lateral views showed type 4 Brooker HO at the patellar tendon and type 2 at LCL.
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case_images: Radiographic imaging revealed Brooker type 4 HO in the patellar tendon and knee intra-articular and type 2 HO in the lateral collateral ligament (Fig. 1).
case_images: Early postoperative lateral view radiography demonstrates complete HO excision.
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case_images: There were also small HOs in the lateral collateral ligament (LCL) region and around the anterior cruciate ligament (ACL) that were excised (Fig. 2).
case_images: The lateral view demonstrates type 1 brooker HO recurrence after two month.
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case_images: The patient reported reduced ROM (0-20-80), and radiography revealed new HO formation in the patellar tendon and intra-articular knee (Fig. 3).
case_images: Knee radiography after two years shows heterotopic ossification in the lateral collateral ligament and retropatellar region, with some degree of patella baja. A: AP view B: Lateral view.
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case_images: Examination and radiography revealed patella baja (Fig. 4, Fig. 5).