Progressive subtalar joint dislocation and limb-length inequality. An unusual case

Area of Science:

• Orthopedic surgery
• Pediatric orthopedics
• Foot and ankle surgery

Background:

• Subtalar joint dislocation is a rare traumatic injury, representing 1% of all dislocations.
• Gradual subtalar joint subluxation without trauma is exceptionally uncommon.
• Congenital limb length discrepancy can influence foot and ankle biomechanics.

Observation:

• An adolescent presented with a congenitally short limb and gradual lateral subtalar joint subluxation.
• The patient had an anatomically abnormal subtalar joint.
• No history of acute trauma was reported.

Findings:

• The case involved a rare presentation of subtalar joint subluxation in an adolescent with a short limb.
• Treatment included Ilizarov leg lengthening and multiple subtalar joint surgeries.
• The Ilizarov technique was utilized for both leg lengthening and subtalar joint realignment.

Implications:

• This case highlights the importance of considering subtalar joint pathology in adolescents with limb length discrepancies.
• The Ilizarov technique offers a viable option for managing complex foot and ankle deformities in conjunction with limb lengthening.
• Further research may explore optimal surgical strategies for subtalar joint instability associated with congenital abnormalities.