Trevor's Disease: Management Difficulties and Proposed Classification.

Area of Science:

• Orthopedics
• Developmental Biology
• Rare Diseases

Background:

• Dysplasia epiphysealis hemimelica (DEH), also known as Trevor's disease, is a rare developmental disorder.
• It is characterized by osteocartilaginous overgrowth of the epiphysis or epiphyseal equivalent.
• DEH differs from osteochondroma in its pathobiology and epiphyseal origin, unlike the metaphyseal occurrence of osteochondromata.

Observation:

• The clinical presentation of DEH is diverse, with mechanical symptoms and deformities being predominant.
• Initial reports suggested lower limb involvement, but later findings indicated a more generalized distribution.
• The origin of DEH, whether intra-articular or extra-articular, influences management difficulties and recurrence rates.

Findings:

• DEH presents with osteocartilaginous overgrowth originating from the epiphysis.
• Radiographic appearance can resemble osteochondroma, but pathobiology and occurrence differ.
• Management and recurrence are linked to the intra-articular or extra-articular nature of the lesion.

Implications:

• A new classification system for DEH is proposed, incorporating intra-articular and extra-articular parameters.
• Understanding the origin is crucial for effective management strategies and reducing recurrence.
• Further research into DEH pathogenesis may lead to improved treatment outcomes for this rare condition.