Purposeto evaluate our consecutive series of tubeplasty and extensor mechanism reconstruction during knee arthroplasty in patients with previous patellectomy. Methodswe describe our surgical technique and present a retrospective consecutive series of 4 patients with a minimum 6 months follow-up. Knee society score (KSS), clinical and radiographic outcomes were collected at final follow up. Resultswe included 4 patients (2 males/2 females) with average age 65.5 years (range 58–76). There were 2 primary and 2 revision knee arthroplasties. The follow up ranged from 0.5 to 13 years. All 4 patients regained function and satisfactory clinical outcomes with KSS score 84.7 (range 79–90). Conclusionsatisfactory clinical outcomes can be achieved with extensor mechanism reconstruction and tubeplasty in patients with previous patellectomy undergoing primary and revision knee arthroplasty. Level of evidenceIV.