A Combined Posterior Stable Prosthesis and Medial Condylar Sliding Osteotomy Technique for Kashin-Beck Osteoarthritis

Kashin-Beck disease (KBD) is a chronic, endemic osteoarthropathy characterized by progressive joint degeneration and deformity, frequently involving the knee and resulting in severe valgus alignment and functional impairment. Conventional surgical management of severe valgus deformities, including the use of condylar constrained knee (CCK) or hinged knee (HK) prostheses, is often associated with increased surgical trauma, higher costs, and limited accessibility, particularly in resource-constrained settings. This study evaluates a surgical technique combining posterior-stabilized (PS) total knee arthroplasty with medial femoral condylar sliding osteotomy to address severe valgus deformities in KBD. A retrospective analysis was conducted on 10 patients (11 knees) treated between 2019 and 2023. Clinical outcomes were assessed using pain scores, functional scoring systems, range of motion measurements, and radiographic evaluation of alignment and prosthesis stability. Postoperative results demonstrated significant improvements in pain, knee function, and activity levels, along with restoration of limb alignment and stable prosthesis fixation. The osteotomy site achieved satisfactory bone healing in all cases. This combined technique provides effective deformity correction and joint stabilization while reducing the need for highly constrained implants, offering a simpler, reliable, and cost-effective alternative for managing KBD-associated knee deformities.