Does Osteoarthritis of the Ipsilateral Hip Develop After Knee Rotationplasty? A Radiologic Study on Patients with Long-term Survival Undergoing Surgery for Bone Tumors

During routine check-ups of long-term surviving knee rotationplasty patients referred to our institute, we noted that the operated limb radiograph showed signs of hip osteoarthritis in some patients, and that one patient reported hip pain. We wondered whether radiographic changes and symptoms are common in patients undergoing rotationplasty due to mechanical or overloading problems during gait. Based on these considerations, we wished to determine how frequently arthrosis or arthritis would arise in the ipsilateral hip to a knee rotationplasty at long-term follow-up. To our knowledge, this issue has not been explored. Clinicians and patients should be aware of any problems that may affect the hip over time that could result in treatment.