Rare Indication of Atlantoaxial Fusion-failed Conservative Management of Primary Atlantoaxial Osteoarthritis.

Osteoarthritis of the atlantoaxial joint is a significant cause of occipitocervical pain, which is often missed and has an increasing prevalence with age. The patients typically present with occipitocervical pain and restricted and painful neck rotations. Despite the primary reliance on conservative management for this pathology, surgical intervention becomes crucial for those not responding to standard conservative treatment. The presented case series highlights the rarity of the requirement of surgical intervention in the management of Atlantoaxial osteoarthritis (AAOA) and the clinical outcomes of surgical management in AAOA. This paper presents a case series of four patients who were managed surgically with atlantoaxial fusion, from a database of 108 patients with AAOA. The case series includes three males and one female with a mean age of presentation being 67.5 years. All four patients presented with occipitocervical pain, and painful neck movements and were diagnosed with AAOA on the anteroposterior open mouth view radiographs showing changes of osteoarthritis such as bone erosions, sclerosis, osteophytes. The patients were managed conservatively with non-steroidal anti-inflammatory drugs, intra-articular steroid injections, and cervical collar immobilization. Those not responding to conservative management and with incapacitating pain were managed surgically with atlantoaxial fusion procedures. In a group of patients with a painful and debilitating degenerative AAOA only a small proportion of cases require surgical intervention. In this cohort, only 3.70 % of patients required surgery, highlighting the rarity of surgical intervention required in the management of AAOA. Nevertheless, when conducted, atlantoaxial fusion has proved to be efficacious with a low rate of serious complications and the patient self-rated outcome in terms of post-operative visual analog scale score and neck disability index scores indicating a high degree of satisfaction with the procedures.

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