Background. Minimally invasive or open surgery is contentious in the treatment of spondylodiscitis, therefore finding a balance between the two is urgently needed. In this study, we propose a new treatment paradigm for treating spontaneous lumbar spondylodiscitis by percutaneous endoscopic lumbar debridement and irrigation drainage (PELDID). Then, the Pola classification was used to guide subsequent treatment. Methods. From November 2017 to April 2019, this study collected data on 16 patients with lumbar spondylodiscitis who were surgically treated utilizing this treatment paradigm in our department. Clinical effectiveness was determined using the visual analogue scale (VAS), the Oswestry Disability Index (ODI), the MOS 36-item short-form health survey (SF-36), and Kirkaldy-Willis criteria. Results. All 16 patients completed the treatment using the above paradigm and were followed up for 28.13 ± 10.15 months. The preoperative Pola classification is as follows: 7 cases of type A, 3 cases of type B, and 6 cases of type C. After the first-stage surgery, the evaluation results of Pola classification were as follows: 8 cases of type A, 8 cases of type B, and 0 cases of type C. Four patients received second-stage surgery with internal fixation through the paravertebral multifidus space approach and intervertebral bone graft fusion through the transforaminal approach, and the reoperation rate was 25% (4/16 cases). The Visual analogue scale (VAS), Oswestry Disability Index (ODI), and SF-36 score all improved significantly from 2.43 ± 0.89   to   0.18 ± 0.40 , from   77.31 % ± 11.15 % to   16.93 % ± 5.45 % , and   from   18.34 ± 7.47   to   80.3 ± 15.36 . The CRP and ESR decreased dramatically from 49.61 ± 48.84   to 12.50 ± 12.18 and from 65.56 ± 26.89   to   29.68 ± 20.68 . There were no recurrences of infection in our study. Conclusions. The paradigm of the first-stage PELDID technique combined with the Pola classification system to guide the second-stage treatment for spontaneous spondylodiscitis is a novel and effective strategy for treating spontaneous spondylodiscitis.

Background: Limb salvage surgery for calcaneal sarcomas remains challenging due to its poor compartmentalization. While below-knee amputation is still the standard choice of operative treatment, total calcanectomy with or without reconstruction was advocated. This report aims to analyze the clinical outcome of calcaneal reconstruction with cement and replantation in situ after the inactivation of tumor. Methods: We describe a 73-year-old male patient who suffered chronic pain and increasingly larger neoplasm in the left foot for about 3 years. Based on the results of percutaneous biopsy, a diagnosis of chondrosarcoma was made. Results: The patient underwent total calcanectomy, inactivation of calcaneus tumor, and reconstruction with cement. The Achilles tendon was detached through a Cincinnati incision. No adverse events occurred both during and after the surgery. At the last follow-up of 29 months, the patient claimed no pain, no evident limp, or any limitation of daily activities. Image examination, weight-bearing test, and MSTS score revealed a satisfactory result. Conclusion: Calcaneal reconstruction with bone cement after total calcanectomy, inactivation of calcaneus tumor, and replantation in situ is likely to provide a feasible surgical choice and a satisfactory clinical outcome.