1. Ochronotic arthropathy: diagnosis and management—a critical review;Drakoulakis;Am J Orthop,2012
2. Alkaptonuria presenting as spondyloarthropathy in an elderly;Kant;J Indian Acad Geriatrics,2005
3. Alkaptonuria and intramedullary calcification-case report;Raina;J Assoc Physicians India,2008
4. Unrecognized ochronosis-a case report;Murgic;Acta Clin Croat,2008
5. Spontaneous rupture of quadriceps tendon and total joint arthroplasty in alkaptonuria;Krishnakumar;Kerala J Orthop,2012