Revision Surgery in Permanent Patellar Dislocation in DiGeorge Syndrome

Area of Science:

• Orthopedic Surgery
• Genetics
• Biomaterials

Background:

• DiGeorge syndrome is associated with systemic hyperlaxity and patellar instability.
• Previous surgical interventions failed to resolve persistent knee pain and patellar instability in this patient.
• Arthritic changes in the patellofemoral joint complicated the treatment approach.

Purpose of the Study:

• To address chronic patellar instability and pain in a patient with DiGeorge syndrome.
• To evaluate the efficacy of open lateral release and medial patellofemoral ligament reconstruction using a biosynthetic ligament.
• To restore patellofemoral stability and improve daily living activities.

Main Methods:

• Open lateral release of the knee.
• Medial patellofemoral ligament (MPFL) reconstruction utilizing a biosynthetic ligament.
• Postoperative assessment of range of motion, patellar stability, and patient-reported outcomes.

Main Results:

• One-year post-surgery, the patient achieved a range of motion from 0-120 degrees with a stable patella.
• Significant improvement in patient-reported scores and ability to perform daily activities without instability.
• Successful restoration of patellofemoral stability despite significant tissue laxity.

Conclusions:

• Medial patellofemoral ligament reconstruction combined with lateral release is an effective treatment for patellar instability in complex syndromic cases.
• The use of a biosynthetic ligament proved beneficial for MPFL reconstruction in a patient with congenital tissue laxity.
• This surgical approach successfully managed patellar instability in a patient with DiGeorge syndrome, improving functional outcomes.