Bilateral Patellar Tendon Rupture Following Total Knee Arthroplasty in a Patient With Alkaptonuria: A Case Report

Alkaptonuria (AKU) is a rare hereditary disorder of tyrosine degradation. The disorder is characterized by the accumulation of a pigment called homogentisic acid. Its accumulation can lead to the breakdown of connective tissue, including tendons. This report presents a 46-year-old male with a histor...

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Bibliographic Details
Published in:Curēus (Palo Alto, CA) CA), 2023-05, Vol.15 (5), p.e38597
Main Authors: Lazaro, Johnlevi S, Lutz, Rex, Deirmengian, Gregory K
Format: Article
Language:English
Subjects:
Case reports
Connective tissue
Disease prevention
Fractures
Joint surgery
Knee
Ligaments
Magnetic resonance imaging
Orthopedics
Physical therapy
Polyethylene
Range of motion
Sutures
Tendons
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Summary:Alkaptonuria (AKU) is a rare hereditary disorder of tyrosine degradation. The disorder is characterized by the accumulation of a pigment called homogentisic acid. Its accumulation can lead to the breakdown of connective tissue, including tendons. This report presents a 46-year-old male with a history of bilateral total knee arthroplasty (TKA) who sustained bilateral patellar tendon rupture after an acute injury. A single-stage bilateral knee revision with direct repair of the extensor mechanism augmented with Achilles allograft was performed. The procedure was successful, and the patient had an excellent post-operative outcome at one year post-operatively. This case attempts to highlight the possible complications from AKU in order to better counsel patients with this condition who are undergoing TKA.
ISSN:2168-8184
2168-8184
DOI:10.7759/cureus.38597