scholarly journals Extended Lateral Orbital Craniotomy: Anatomic Study and Initial Clinical Series of a Novel Minimally Invasive Pterional Approach

2019 ◽  
Vol 81 (01) ◽  
pp. 088-096
Author(s):  
Mithun G. Sattur ◽  
Karl R. Abi-Aad ◽  
Matthew E. Welz ◽  
Rami James Aoun ◽  
Chandan Krishna ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Minimum Distance ◽  
Sylvian Fissure ◽  
Fat Pad ◽  
Anatomic Study ◽  
Clinical Series ◽  
The Mean ◽  
Keyhole Approach ◽  
Bone Exposure ◽  
Sphenoid Ridge

Background Of the minimally invasive “keyhole” alternatives to the pterional region, the supraorbital eyebrow approach is the most widely adopted. Yet it can prove disadvantageous when a more direct lateral microsurgical trajectory of attack to the Sylvian fissure and anterior middle fossa are needed. Objective The extended lateral orbital (XLO) approach was designed to be direct and minimally invasive, with the sphenoid ridge at the center of exposure. Methods Five injected cadaver heads were used for anatomic study of the XLO approach. The anatomic course of the frontalis branch of facial nerve was studied in relation to the XLO incision. Following XLO incision, the bone exposure was measured. The intracranial microsurgical exposure was assessed subjectively. Application of the technique in representative clinical operative cases is provided. Results The frontalis nerve was protected in the subgaleal fat pad, with an average minimum distance of 2.3 cm from the XLO incision. The mean calvarial area exposure was 4.95 cm2 and consistently centered on the sphenoid ridge. Excellent access to ipsilateral Sylvian's fissure, perisylvian regions, and supra-/parasellar structures was possible. The main limitations related to exposure of the posterior Sylvian fissure and the expected limitations of microsurgical instrument manipulation from a smaller craniotomy. Conclusions The XLO approach is a minimally invasive keyhole approach to the pterional region that affords a unique lateral trajectory via a craniotomy centered on the sphenoid ridge. Excellent exposure to properly selected lesions is possible. The incision is at a safe distance from the frontalis branch and shows excellent cosmetic healing.

The Hallux Metatarsophalangeal Capsule: An Anatomic Study With Respect to Percutaneous Hallux Valgus Correction

2021 ◽  
pp. 107110072110272
Author(s):  
Kenneth M. Chin ◽  
Nicholas S. Richardson ◽  
John T. Campbell ◽  
Clifford L. Jeng ◽  
Matthew W. Christian ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Hallux Valgus ◽  
Metatarsal Head ◽  
Cadaveric Study ◽  
Anatomic Study ◽  
Orthopedic Surgeons ◽  
Popular Knowledge ◽  
Fresh Frozen ◽  
The Mean ◽  
Anatomic Relationship

Background: Minimally invasive surgery for the treatment of hallux valgus deformities has become increasingly popular. Knowledge of the location of the hallux metatarsophalangeal (MTP) proximal capsular origin on the metatarsal neck is essential for surgeons in planning and executing extracapsular corrective osteotomies. A cadaveric study was undertaken to further study this anatomic relationship. Methods: Ten nonpaired fresh-frozen frozen cadaveric specimens were used for this study. Careful dissection was performed, and the capsular origin of the hallux MTP joint was measured from the central portion of the metatarsal head in the medial, lateral, dorsal, plantarmedial, and plantarlateral dimensions. Results: The ten specimens had a mean age of 77 years, with 5 female and 5 male. The mean distances from the central hallux metatarsal head to the MTP capsular origin were 15.2 mm dorsally, 8.4 mm medially, 9.6 mm laterally, 19.3 mm plantarmedially, and 21.0 mm plantarlaterally. Conclusion: The MTP capsular origin at the hallux metatarsal varies at different anatomic positions. Knowledge of this capsular anatomy is critical for orthopedic surgeons when planning and performing minimally invasive distal metatarsal osteotomies for the correction of hallux valgus. Type of Study: Cadaveric Study.

scholarly journals The Hallux Metatarsophalangeal Capsule: An Anatomic Study with Respect to Percutaneous Hallux Valgus Correction

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0001
Author(s):  
Kenneth M. Chin ◽  
Nicholas S. Richardson ◽  
John T. Campbell ◽  
Clifford L. Jeng ◽  
Matthew W. Christian ◽  
...  
Keyword(s):  
Minimally Invasive Surgery ◽  
Minimally Invasive ◽  
Hallux Valgus ◽  
Invasive Surgery ◽  
Metatarsal Head ◽  
Anatomic Study ◽  
Popular Knowledge ◽  
Fresh Frozen ◽  
The Mean ◽  
Anatomic Relationship

Category: Bunion Introduction/Purpose: Minimally invasive surgery for the treatment of hallux valgus deformities has become increasingly popular. Knowledge of the location of the hallux MTP proximal capsular origin on the metatarsal neck is critical for surgeons in planning and executing extra-capsular corrective osteotomies. A cadaveric study was undertaken to further study this anatomic relationship. Methods: Ten nonpaired fresh-frozen frozen cadaveric specimens were used for this study. Careful dissection was performed, and the capsular origin of the hallux MTP joint was measured from the central portion of the metatarsal head in the medial, lateral, dorsal, plantarmedial, and plantarlateral dimensions. Results: The ten specimens had a mean age of 77 years, five female and five male. The mean distances from the central hallux metatarsal head to the MTP capsular origin was 15.2 mm dorsally, 8.4 mm medially, 9.6 mm laterally, 19.3 mm plantarmedially, and 21.0 mm plantarlaterally. Conclusion: The MTP capsular origin at the hallux metatarsal varies at different anatomic positions. Knowledge of this capsular anatomy is critical for orthopaedic surgeons when planning and performing minimally invasive distal metatarsal osteotomies for the correction of hallux valgus.

Anatomic and Surgical Basis of the Sphenoid Ridge Keyhole Approach for Cerebral Aneurysms

2005 ◽  
Vol 56 (suppl_1) ◽  
pp. ONS-178-ONS-185 ◽  
Author(s):  
Edgar Nathal ◽  
Juan Luis Gomez-Amador
Keyword(s):  
Anterior Part ◽  
Cerebral Aneurysms ◽  
Circle Of Willis ◽  
Sylvian Fissure ◽  
Clear Understanding ◽  
Pterional Approach ◽  
Anterior Clinoid Process ◽  
Keyhole Approach ◽  
Sphenoid Ridge ◽  
Basal Cisterns

Abstract IN VASCULAR NEUROSURGERY, the pterional approach has been used primarily for the treatment of a wide variety of diseases (cavernous angiomas, arteriovenous malformations, etc.), and it is used to take advantage of naturally occurring planes and spaces to expose the major structures of the circle of Willis. It provides access to the major part of the anterior circulation aneurysms and those occurring in the upper and most proximal part of the posterior circulation. Conversely, there has been an increasing interest in the so-called minimally invasive procedures or keyhole approaches to treating cerebral aneurysms in specific locations. In this work, we describe a novel keyhole approach that was conceived to achieve the angle of vision and advantages of the classic pterional approach. This surgical approach is based on the anatomic location of the sphenoid ridge and its relationship with the sylvian fissure and basal cisterns. The initial incision is made over the hairline behind the external border of the eye on the side selected. A skin and muscular flap is reflected anteriorly, and a small 3 × 3-cm craniotomy is completed around the external landmarks of the sphenoid ridge. Further extradural drilling is completed down to the anterior clinoid process. The dura is opened in a semilunar manner, and the sylvian fissure is opened completely to reach the sylvian and basal cisterns. Thereafter, the aneurysm is dissected and clipped according to the standard microtechnique of the neurosurgeon. A step-by-step description of the approach is offered in this work to facilitate a clear understanding of it. We recommend this approach for treatment of aneurysms arising at the anterior part of the circle of Willis. It has the advantages of less operative time, fewer days of hospitalization, and similar morbidity and mortality compared with the standard pterional craniotomy (5.7% on our service for nongiant ruptured aneurysms).

scholarly journals Endoscopic minimally invasive transforaminal interbody fusion without general anesthesia: initial clinical experience with 1-year follow-up

2016 ◽  
Vol 40 (2) ◽  
pp. E13 ◽  
Author(s):  
Michael Y. Wang ◽  
Jay Grossman
Keyword(s):  
Minimally Invasive ◽  
General Anesthesia ◽  
Open Surgery ◽  
Interbody Fusion ◽  
Short Form ◽  
Case Series ◽  
Sf 36 ◽  
Clinical Series ◽  
The Mean

OBJECTIVE One of the principal goals of minimally invasive surgery has been to speed postoperative recovery. In this case series, the authors used an endoscopic technique for interbody fusion combined with percutaneous screw fixation to obviate the need for general anesthesia. METHODS The first 10 consecutive patients treated with a minimum of 1 year's follow-up were included in this series. The patients were all treated using endoscopic access through Kambin's triangle to allow for neural decompression, discectomy, endplate preparation, and interbody fusion. This was followed by percutaneous pedicle screw and connecting rod placement using liposomal bupivacaine for long-acting analgesia. No narcotics or regional anesthetics were used during surgery. RESULTS All patients underwent the procedure successfully without conversion to open surgery. The patients' average age was 62.2 ± 9.0 years (range 52–78 years). All patients had severe disc height collapse, and 60% had a Grade I spondylolisthesis. The mean operative time was 113.5 ± 6.3 minutes (range 105–120 minutes), and blood loss was 65 ± 38 ml (range 30–190 ml). The mean length of hospital stay was 1.4 ± 1.3 nights. There were no intraoperative or postoperative complications. Comparison of preoperative and final clinical metrics demonstrated that the Oswestry Disability Index improved from 42 ± 11.8 to 13.3 ± 15.1; the 36-Item Short Form Health Survey (SF-36) Physical Component Summary improved from 47.6 ± 3.8 to 49.7 ± 5.4; the SF-36 Mental Component Summary decreased from 47 ± 3.9 to 46.7 ± 3.4; and the EQ-5D improved from 10.7 ± 9.5 to 14.2 ± 1.6. There were no cases of nonunion identified radiographically on follow-up imaging. CONCLUSIONS Endoscopic fusion under conscious sedation may represent a feasible alternative to traditional lumbar spine fusion in select patients. Larger clinical series are necessary to validate that clinical improvements are sustained and that arthrodesis rates are successful when compared with open surgery. This initial experience demonstrates the possible utility of this procedure.

Minimally Invasive Transaortic Repair of the Mitral Valve

2011 ◽  
Vol 14 (4) ◽  
pp. 232 ◽  
Author(s):  
Orlando Santana ◽  
Joseph Lamelas
Keyword(s):  
Mitral Valve ◽  
Aortic Valve ◽  
Mitral Regurgitation ◽  
Aortic Valve Replacement ◽  
Minimally Invasive ◽  
Valve Replacement ◽  
Operative Mortality ◽  
The Mean ◽  
Transaortic Approach

<p><b>Objective:</b> We retrospectively evaluated the results of an edge-to-edge repair (Alfieri stitch) of the mitral valve performed via a transaortic approach in patients who were undergoing minimally invasive aortic valve replacement.</p><p><b>Methods:</b> From January 2010 to September 2010, 6 patients underwent minimally invasive edge-to-edge repair of the mitral valve via a transaortic approach with concomitant aortic valve replacement. The patients were considered to be candidates for this procedure if they were deemed by the surgeon to be high-risk for a double valve procedure and if on preoperative transesophageal echocardiogram the mitral regurgitation jet originated from the middle portion (A2/P2 segments) of the mitral valve.</p><p><b>Results:</b> There was no operative mortality. Mean cardiopulmonary bypass time was 137 minutes, and mean cross-clamp time was 111 minutes. There was a significant improvement in the mean mitral regurgitation grade, with a mean of 3.8 preoperatively and 0.8 postoperatively. The ejection fraction remained stable, with mean preoperative and postoperative ejection fractions of 43.3% and 47.5%, respectively. Follow-up transthoracic echocardiograms obtained at a mean of 33 days postoperatively (range, 8-108 days) showed no significant worsening of mitral regurgitation.</p><p><b>Conclusion:</b> Transaortic repair of the mitral valve is feasible in patients undergoing minimally invasive aortic valve replacement.</p>

scholarly journals Safety and efficacy of Chinese minimally invasive percutaneous nephrolithotomy in the management of renal stones ≤ 2 cm: a single-center experience

2019 ◽  
Vol 25 (1) ◽  
Author(s):  
Elsayed M. Salih ◽  
Ibrahim Elsotohi ◽  
Hisham Elhelaly ◽  
Mohamed Elsalhy ◽  
Mourad M. Mourad
Keyword(s):  
Minimally Invasive ◽  
Percutaneous Nephrolithotomy ◽  
Renal Stone ◽  
Renal Stones ◽  
Stone Size ◽  
Intraoperative Complication ◽  
Safety And Efficacy ◽  
Single Center Experience ◽  
Minimally Invasive Percutaneous Nephrolithotomy ◽  
The Mean

Abstract Background The goal for using smaller caliber instruments in PNL was to reduce the access-related complications and to decrease morbidity. The objective of this study was to evaluate the safety and efficacy of Chinese minimally invasive percutaneous nephrolithotomy (MIPNL) in the treatment of renal stones ≤ 20 mm. Results Sixty-seven patients completed the study protocol. The mean age was 41.10 ± 13.99 years (range 18–68 years). There were 43 (64%) male and 24 (36%) females. The mean stone size was ranged from 78.5 to 439.6 mm2 (mean ± SD 172.48 ± 69.54 mm2). The overall SFR was (82%). Twelve (18%) needed post-MIPNL auxiliary procedure, in the form of second MIPNL in 3 (4.5%) cases, SWL in 7 (10%), and RIRS in 2 (3%) cases. The intraoperative complication was present in four patients (5%) include bleeding necessitate blood transfusion in one patient (1.5%) and renal collecting system perforation 3 (4.5%). The postoperative complication was urine leakage 5 (7.5) and fever in 6 (9%) of patients. Conclusion Chinese MIPNL is safe and effective method for treatment of renal stone ≤ 20 mm size with satisfactory SFR and low complication rate when SWL failed or contraindicated. It is considered a feasible treatment alternative to standard PNL, in the absence of flexible URS or miniature nephroscope.

scholarly journals Incidence, Clinicopathological Profile and Location - Based Outcome of Intracranial Meningiomas: 10-Year Institutional Study with Review of Literature

2021 ◽  
Vol 10 (01) ◽  
pp. 042-048
Author(s):  
Feroze Ganai ◽  
Humam Nisar Tanki ◽  
Afaq Sherwani ◽  
Kirmani Altaf ◽  
Nazish Chisti ◽  
...  
Keyword(s):  
Middle Cranial Fossa ◽  
Review Of Literature ◽  
Young Females ◽  
Intracranial Meningiomas ◽  
Significant Incidence ◽  
Clinicopathological Profile ◽  
Anterior Fossa ◽  
Cranial Fossa ◽  
The Mean ◽  
Sphenoid Ridge

Abstract Intracranial meningiomas are the most common extra-axial tumors, representing 15% of all brain tumors. Arising from the arachnoid cells, and common in middle-aged women, 90% meningiomas are benign. We conducted a 10-year study on 183 cases of intracranial meningiomas and observed a lower and decreasing trend; the mean age was 43.3 years but there was also a significant incidence in young females. Parasagittal/falx (29%), sphenoid ridge, convexity meningiomas and middle cranial fossa locations were more common. Histopathologically, meningothelial meningioma was the most common. Benign (WHO I) tumors were found in above 90%, atypical (WHO II) in 5% cases, and malignant (WHO III) in < 4% patients. Most patients underwent Simpsons Grade I excision (35.6%) with dural reconstruction because of late presentations. Posterior fossa meningiomas were mostly benign, while intraventricular ones were mostly malignant with highest postoperation mortality. Mortality in operated patients was 9.8% but was highest in anterior fossa tumors (12.5%).

scholarly journals Minimally invasive distal pancreatectomy: a case-matched cost-analysis between robot-assisted surgery and direct manual laparoscopy

2021 ◽  
Author(s):  
Gregorio Di Franco ◽  
Andrea Peri ◽  
Valentina Lorenzoni ◽  
Matteo Palmeri ◽  
Niccolò Furbetta ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Cost Analysis ◽  
Distal Pancreatectomy ◽  
Length Of Hospital Stay ◽  
High Volume ◽  
Fixed Costs ◽  
Spleen Preservation ◽  
Robotic Assisted Surgery ◽  
The Mean ◽  
Complications Rate

Abstract Background Few studies have reported a structured cost analysis of robotic distal pancreatectomy (RDP), and none have compared the relative costs between the robotic-assisted surgery (RAS) and the direct manual laparoscopy (DML) in this setting. The aim of the present study is to address this issue by comparing surgical outcomes and costs of RDP and laparoscopic distal pancreatectomies (LDP). Methods Eighty-eight RDP and 47 LDP performed between January 2008 and January 2020 were retrospectively analyzed. Three comparable groups of 35 patients each (Si-RDP-group, Xi-RDP group, LDP-group) were obtained matching 1:1 the RDP-groups with the LDP-group. Overall costs, including overall variable costs (OVC) and fixed costs were compared using generalized linear regression model adjusting for covariates. Results The conversion rate was significantly lower in the Si-RDP-group and Xi-RDP-group: 2.9% and 0%, respectively, versus 14.3% in the LDP-group (p = 0.045). Although not statistically significant, the mean operative time was lower in Xi-RDP-group: 226 min versus 262 min for Si-RDP-group and 247 min for LDP-group. The overall post-operative complications rate and the length of hospital stay (LOS) were not significantly different between the three groups. In LDP-group, the LOS of converted cases was significantly longer: 15.6 versus 9.8 days (p = 0.039). Overall costs of LDP-group were significantly lower than RDP-groups, (p < 0.001). At multivariate analysis OVC resulted no longer statistically significantly different between LDP-group and Xi-RDP-group (p = 0.099), and between LDP-group and the RDP-groups when the spleen preservation was indicated (p = 0.115 and p = 0.261 for Si-RDP-group and Xi-RDP-group, respectively). Conclusions RAS is more expensive than DML for DP because of higher acquisition and maintenance costs. The flattening of these differences considering only the variable costs, in a high-volume multidisciplinary center for RAS, suggests a possible optimization of the costs in this setting. RAS might be particularly indicated for minimally invasive DP when the spleen preservation is scheduled.

The Emerging Role of Robotic Single-site Approach for Myomectomy: A Systematic Review of the Literature

2021 ◽  
pp. 155335062098822
Author(s):  
Eirini Giovannopoulou ◽  
Anastasia Prodromidou ◽  
Nikolaos Blontzos ◽  
Christos Iavazzo
Keyword(s):  
Blood Loss ◽  
Minimally Invasive ◽  
Complication Rate ◽  
Operative Time ◽  
Intraoperative Complications ◽  
Single Site ◽  
Minimally Invasive Technique ◽  
Invasive Technique ◽  
Robotic Myomectomy ◽  
The Mean

Objective. To review the existing studies on single-site robotic myomectomy and test the safety and feasibility of this innovative minimally invasive technique. Data Sources. PubMed, Scopus, Google Scholar (from their inception to October 2019), as well as Clinicaltrials.gov databases up to April 2020. Methods of Study Selection. Clinical trials (prospective or retrospective) that reported the outcomes of single-site robotic myomectomy, with a sample of at least 20 patients were considered eligible for the review. Results. The present review was performed in accordance with the guidelines for Systematic Reviews and Meta-Analyses (PRISMA). Four (4) studies met the inclusion criteria, and a total of 267 patients were included with a mean age from 37.1 to 39.1 years and BMI from 21.6 to 29.4 kg/m2. The mean operative time ranged from 131.4 to 154.2 min, the mean docking time from 5.1 to 5.45 min, and the mean blood loss from 57.9 to 182.62 ml. No intraoperative complications were observed, and a conversion rate of 3.8% was reported by a sole study. The overall postoperative complication rate was estimated at 2.2%, and the mean hospital stay ranged from 0.57 to 4.7 days. No significant differences were detected when single-site robotic myomectomy was compared to the multiport technique concerning operative time, blood loss, and total complication rate. Conclusion. Our findings support the safety of single-site robotic myomectomy and its equivalency with the multiport technique on the most studied outcomes. Further studies are needed to conclude on the optimal minimally invasive technique for myomectomy.

OBESITY AND SELF-REPORTED OUTCOME AFTER MINIMALLY INVASIVE LUMBAR SPINAL FUSION SURGERY

Neurosurgery ◽  
2008 ◽  
Vol 63 (5) ◽  
pp. 956-960 ◽  
Author(s):  
David S. Rosen ◽  
Sherise D. Ferguson ◽  
Alfred T. Ogden ◽  
Dezheng Huo ◽  
Richard G. Fessler
Keyword(s):  
Minimally Invasive ◽  
Linear Models ◽  
Short Form ◽  
Length Of Hospital Stay ◽  
Fusion Surgery ◽  
Body Habitus ◽  
Short Form 36 ◽  
Spinal Fusion Surgery ◽  
The Mean ◽  
Lumbar Spinal

Abstract OBJECTIVE Many patients undergoing lumbar spine fusion are overweight or obese. The relationship between body habitus and outcome after lumbar spine fusion surgery is not well defined. METHODS We analyzed a prospectively maintained database of self-reported pain and quality of life measures, including Visual Analog Scale pain score, Short Form 36, and Oswestry Disability Index. We selected patients undergoing minimally invasive transforaminal lumbar interbody fusion between September 2002 and June 2006 at a single institution. We used linear regression models and mixed-effects linear models to examine the relationships between body habitus and self-reported outcomes. RESULTS The analysis identified 110 patients meeting the study criteria, with a median follow-up period of 14.8 months. The mean age was 56 years, mean height was 169 cm, and mean weight was 82.2 kg. The mean body mass index (BMI) was 28.7 kg/m2; 31% of patients were overweight (BMI, 25–29.9), and 32% of patients were obese (BMI, &gt;30). Linear regression analysis did not identify a correlation between weight or BMI and pre- and postsurgery changes in any of the outcome measures. The significant findings observed in the mixed-effects linear models were that the changing patterns of Short Form 36 Body Pain subscale and Short Form 36 Vitality subscale varied significantly by category of BMI (P = 0.01 and P = 0.002, respectively), but not significantly if continuous BMI was used (P = 0.53 and P = 0.46, respectively). BMI correlated marginally with estimated blood loss (P = 0.08), but not operative time, length of hospital stay, or complications. CONCLUSION Among this cohort of minimally invasive lumbar fusion patients, body habitus measured by BMI, weight, or height did not have a significant relationship with most self-reported outcome measures, operative time, length of hospital stay, or complications. Obesity should not be considered a contraindication to minimally invasive lumbar spinal fusion surgery.

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