Comprehensive application of high tibial osteotomy, chronic distraction tissue regeneration, and computer-assisted external fixation in the treatment of severe knee osteoarthritis: A case report

RATIONALE: Knee osteoarthritis (KOA) is a common disease. It has long been believed that the main causes of KOA are knee degenerative diseases, trauma, overwork, and labor habits. However, long-term deformity leads to uneven stress on the surface of the knee joint, and the cause of lower limb force line damage has not been taken seriously. Comprehensive application of high tibial osteotomy (HTO), chronic distraction tissue regeneration, and computer-assisted external fixation for the treatment of severe KOA has many advantages over total knee arthroplasty, such as lasting and thorough orthopedic effects, a lower cost, and a faster recovery. PATIENT CONCERNS: The patient was a 48-year-old male with KOA caused by long-term genu varus, resulting in pain in both knees, especially in the right knee. The right knee pain had been aggravated for 2 years, and he was admitted to the hospital for left knee pain for 1 month. DIAGNOSES: X-ray: The patient has right KOA and varus deformity INTERVENTIONS: Comprehensive application of HTO, chronic distraction tissue regeneration technology, and computer-assisted external fixation technology has a good therapeutic effect for patients with KOA and varus. OUTCOMES: The patient's severe genu varus was corrected, the bone and soft tissue regeneration was good, the lower limb force line was improved, lower limb function was restored well, and the treatment was satisfactory. CONCLUSION: For the treatment of KOA patients with genu varus, the combination of HTO, chronic distraction tissue regeneration, and computer-assisted adjustment of external fixation technology have a good effect on the correction of genu varus deformity and the recovery of the lower limb force line. This treatment method is also conducive to preventing postoperative infection and avoiding secondary trauma caused by the removal of internal fixation plates.