Lateral versus prone robot-assisted percutaneous pedicle screw placement: a CT-based comparative assessment of accuracy.

OBJECTIVE: Single-position lateral lumbar interbody fusion (SP-LLIF) has recently gained significant popularity due to increased operative efficiency, but it remains technically challenging. Robot-assisted percutaneous pedicle screw (RA-PPS) placement can facilitate screw placement in the lateral position. The authors have reported their initial experience with SP-LLIF with RA-PPS placement in the lateral position, and they have compared this accuracy with that of RA-PPS placement in the prone position. METHODS: The authors reviewed prospectively collected data from their first 100 lateral-position RA-PPSs. The authors graded screw accuracy on CT and compared it to the accuracy of all prone-position RA-PPS procedures during the same time period. The authors analyzed the effect of several demographic and perioperative metrics, as a whole and specifically for lateral-position RA-PPS placement. RESULTS: The authors placed 99 lateral-position RA-PPSs by using the ExcelsiusGPS robotic platform in the first 18 consecutive patients who underwent SP-LLIF with postoperative CT imaging; these patients were compared with 346 prone-position RA-PPSs that were placed in the first consecutive 64 patients during the same time period. All screws were placed at L1 to S1. Overall, the lateral group had 14 breaches (14.1%) and the prone group had 25 breaches (7.2%) (p = 0.032). The lateral group had 5 breaches (5.1%) greater than 2 mm (grade C or worse), and the prone group had 4 (1.2%) (p = 0.015). The operative level had an effect on the breach rate, with breach rates (grade C or worse) of 7.1% at L3 and 2.8% at L4. Most breaches were grade B (< 2 mm) and lateral, and no breach had clinical sequelae or required revision. Within the lateral group, multivariate regression analysis demonstrated that BMI and number of levels affected accuracy, but the side that was positioned up or down did not. CONCLUSIONS: RA-PPSs can improve the feasibility of SP-LLIF. Spine surgeons should be cautious and selective with this technique owing to decreased accuracy in the lateral position, particularly in obese patients. Further studies should compare SP-LLIF techniques performed while the patient is in the prone and lateral positions.

Quality of Life Improves Following Laparoscopic Hemifundoplication in Neurologically Non-Impaired Children with Gastroesophageal Reflux Disease: A Propensity Score-Matched Analysis.

BACKGROUND: Quality of life (QOL) data following pediatric fundoplication for gastroesophageal reflux disease (GERD) are rare. Present study assessed the QOL in neurologically non-impaired children before and after laparoscopic hemifundoplication (LHF) in comparison to healthy controls. METHODS: PedsQL™ questionnaires assessed data on gastrointestinal symptoms (GIS) and general well-being (GWB) were compared in a propensity score-matched analysis (60 patients' pairs for time-point of surgery and 51 for follow-up). RESULTS: Preoperatively, the LHF group had more GIS (72.2 ± 53.9 vs. 38.8 ± 31.6; p < 0.001) and a lower GWB (16.7 ± 5.5 vs. 23.8 ± 3.5, p < 0.001) compared with controls. Postoperatively, GIS decreased significantly (74.3 ± 52.9 vs. 36.3 ± 33.5; p < 0.001) and the GWB was significantly higher (16.2 ± 6.0 vs. 20.8 ± 5.8; p < 0.001). GIS were similar in the LHF and control groups (39.1 ± 36.4 vs. 40.1 ± 31.0; p = 0.885) but GWB was lower in the LHF group than the control group (20.5 ± 6.3 vs. 23.4 ± 3.9; p = 0.009). CONCLUSIONS: QOL significantly improves after LHF in neurologically non-impaired children.

A comparative study of the incidence of Schneiderian membrane perforations during maxillary sinus augmentation with a sonic oscillating handpiece versus a conventional turbine handpiece.

BACKGROUND: Sonic instruments may reduce perforation rates of the schneiderian membrane during lateral window sinus augmentation procedures. This study compares the incidence of membrane perforations using a sonic handpiece with an oscillating diamond insert versus a turbine handpiece with a conventional rotary diamond stone during lateral window sinus augmentation procedures. MATERIALS AND METHODS: A retrospective chart analysis identified all lateral window sinus augmentation procedures done during a defined period. Among these procedures, those performed with a sonic handpiece and an oscillating diamond insert (experimental) and those performed with a conventional turbine and rotary diamond stone (conventional) were selected for this study. Reported occurrences of sinus membrane perforations during preparation of the osteotomy and elevation of the sinus membrane, as well as postoperative complications, were recorded and compared between treatment groups. RESULTS: Ninety-three consecutive patients were identified for a total of 130 sinus augmentation procedures (51 conventional, 79 experimental). Schneiderian membrane perforations were noted during preparation of the lateral window osteotomy in 27.5% of the sinuses in the conventional group and 12.7% of sinuses in the experimental group. During membrane elevation, perforations were noted in 43.1% of the sinuses in the conventional group and 25.3% of sinuses in the experimental group. Both differences in perforation rates were statistically significant (p < .05). There was no statistically significant difference in postoperative complications. CONCLUSIONS: In this study, the use of a sonic instrument to prepare the lateral window osteotomy during sinus elevation procedures resulted in a reduced perforation rate of the Schneiderian membrane compared with the conventional turbine instrument.

Surgical and prosthetic management of ridge deficiency for an implant-supported restoration in the esthetic zone.

This clinical report presents the surgical and prosthetic management of a patient with complex needs involving anterior implants. After extraction and ridge augmentation, unexpected ridge resorption occurred. Two implants were placed in conjunction with an allograft skin material. Upon healing, 2 additional soft tissue augmentation procedures were performed with autologous pedicle connective tissue grafts to correct the residual ridge deficiency. At the second stage surgery, a modified flap approach was used to further enhance the soft tissue volume and contour. Definitive implant-supported splinted crowns with minimal interproximal pink ceramic material were provided.

Therapy of peri-implant diseases. Where is the evidence?

Peri-implant diseases are a common problem in dentistry today and no definitive treatment protocol exists for their treatment. The purpose of this review was to examine the evidence concerning the management of these diseases. The evidence provided suggests that peri-mucositis can be managed with use of mechanical nonsurgical therapy. Peri-implantitis does not respond to nonsurgical therapy. Various surgical methods have been proposed for management of peri-implantitis with some success; however, no single method can be promoted based on the current evidence.

Fish oil for the treatment of cardiovascular disease.

Omega-3 fatty acids, which are found abundantly in fish oil, are increasingly being used in the management of cardiovascular disease. It is clear that fish oil, in clinically used doses (typically 4 g/d of eicosapentaenoic acid and docosahexaenoic acid) reduce high triglycerides. However, the role of omega-3 fatty acids in reducing mortality, sudden death, arrhythmias, myocardial infarction, and heart failure has not yet been established. This review will focus on the current clinical uses of fish oil and provide an update on their effects on triglycerides, coronary artery disease, heart failure, and arrhythmia. We will explore the dietary sources of fish oil as compared with drug therapy, and discuss the use of fish oil products in combination with other commonly used lipid-lowering agents. We will examine the underlying mechanism of fish oil's action on triglyceride reduction, plaque stability, and effect in diabetes, and review the newly discovered anti-inflammatory effects of fish oil. Finally, we will examine the limitations of current data and suggest recommendations for fish oil use.