Acute and chronic osteochondral talus lesions

Area of Science:

• Orthopedics
• Sports Medicine
• Radiology

Background:

• Osteochondral lesions of the talus are frequently underdiagnosed or delayed in diagnosis.
• These lesions are typically associated with traumatic injuries to the upper ankle joint, with traumatic distortion being the most common cause.
• Osteochondritis dissecans tali, a degenerative change, often originates from a traumatic event.

Purpose of the Study:

• To review the diagnostic methods and treatment strategies for osteochondral lesions of the talus.
• To evaluate the effectiveness of conservative and surgical interventions based on lesion stage and localization.
• To discuss the prognosis and long-term results associated with different treatment approaches.

Main Methods:

• Conventional X-ray in two planes with correct foot alignment is considered sufficient for initial diagnosis.
• While scintigraphy and CT scans are useful for specific questions, MRI provides the most comprehensive information.
• The Berndt and Harty four-stage classification system is used to categorize lesions and guide treatment decisions.

Main Results:

• Conservative therapy is appropriate for lower-stage defects (Stage I and II).
• Surgical intervention is indicated for more severe cases (Stage III and IV), with arthroscopy gaining importance alongside open surgery.
• Good long-term results (approximately 60%) can be achieved with appropriate treatment, with surgical methods showing better outcomes for advanced stages.

Conclusions:

• Timely diagnosis and appropriate treatment, tailored to the stage and location of the osteochondral lesion, are crucial for favorable outcomes.
• For advanced stages (III and IV), surgical interventions like debridement, microfracture, or refixation are indicated over conservative methods.
• While new techniques are emerging, conventional surgical approaches can yield good to very good results, enabling painless weight-bearing.