A robust localization approach for Percutaneous Nephrolithotomy (PCNL): A single-center retrospective study.

BACKGROUND: Percutaneous Nephrolithotomy (PCNL) represents the gold standard treatment method for cases with large kidney stones. As a critical step in performing PCNL, the procedure of establishing a safe and accurate nephrostomy tract will dramatically impact the treatment quality of patients with large-sized kidney stones. OBJECTIVE: This work attempts to describe a new and improved process of establishing an accurate nephrostomy tract and clinically evaluate the effectiveness and safeness of this proposed methodology. METHODS: This work represents a retrospective single-center study carried out between August 2013 and November 2019. The collected samples consist of 937 patients who were operated on using PCNL coupled with our proposed procedure. Briefly, a preoperative B-ultrasonography was firstly performed to decide the puncture point in a simulated surgical position where was marked with ureteral catheter segments (2-3 cm). A computed tomography (CT) scan was followed to correct the anchor points in the simulated surgical position. After this, an accurate puncture operation was performed under the real-time guidance of intraoperative B ultrasound. RESULTS: Examining this study, 851 subjects with renal stones and 86 subjects with ureteropelvic junction stones were included for the PCNL operation project. All samples were grouped with Guy's grading system: grade I, II, III, and IV patients there were 0.00%, 42.69%, 51.01%, and 6.30%, respectively. Among these patients, the average age was 48.49 ± 10.80 years old, with a male to female ratio of around 1.73:1. CONCLUSIONS: This study showed that our developed method warrants an accurate and safe PCNL operation that involves the process of establishing the nephrostomy tract. Other advantageous attributes of this new PCNL process include negligible radiation exposure, lesser complications, and low failure rates. More importantly, this new localization approach is particularly attractive for hospitals that are new to the field of adopting PCNL considering its safeness, effectiveness, and learnability.

[Treatment of humeral supracondylar fracture through small lateral incision].

OBJECTIVE: To explore the effect of treatment of humeral supracondylar fracture with Kirschner and tension band wire fixation through small lateral incision. METHODS: Fifty-eight patients of humeral supracondylar fractures included 42 males and 16 females with the average age of 9.4 years ranging from 3 to 65 years old. All patients were treated with Kirschner and tension band fixation through small lateral incision of 4 to 5 cm after reduction through lateral approach from the inter muscular space between the lateral of triceps brachii and the brachioradial muscle. Two Kirschner were insterted from the lateral condylars to humeral medial. Drill plumb on the humeral above fracture line distance 2 to 3 cm. A wire through bended on the lateral two Kirschners nails crossed in the shape of "8" figure. RESULTS: The fracture obtained accurately reduction and rigidly fixation. All patients were followed up for 1 to 5 years (mean 2.4 years). According to Flynn clinical evaluation, the results were excellent in 48 cases, good in 6,fair in 3 and poor in 1. CONCLUSION: This method has advantages of minimal trauma, easy manipulation, less operative time, early exercises and rapid recovery for the treatment of humeral supracondylar fracture.