Tracking Tag Stabilization with a Small-Diameter Implant in an Edentulous Mandible to Assist Dynamically Navigated Surgery: A case report

This report describes the use of a temporary dental implant to secure a radiographic fiducial marker and patient tracking tag to an edentulous mandible for dynamically guided implant placement into a fibula microvascular free flap. A small diameter dental implant was placed into the anterior mandible to secure a radiographic fiducial marker followed by a patient tag. The patient tag allowed for tracking of the patient’s mandible during placement of endosseous dental implants. Four endosseous dental implants were successfully placed into the edentulous fibula free flap mandibular reconstruction. Dynamic navigation using a small diameter implant to secure radiographic fiducial markers and patient tags provides a novel technique to place implants into an edentulous microvascular free flap with minimal incision and reflection of soft tissue.

A PROSPECTIVE STUDY OF FUNCTIONAL AND RADIOLOGICAL OUTCOME OF PERTROCHANTERIC FEMUR FRACTURES TREATED WITH PROXIMAL FEMORAL NAIL ANTI ROTATION II ( PFN A2)

BACKGROUND: Femoral Inter-Trochanteric fracture is one of the most frequently occurring fractures in the elderly, usually following trivial trauma. In the younger age group of people, it occurs almost always due to high velocity trauma. OBJECTIVES: This study aimed to study the functional and radiological outcomes of operative management of intertrochanteric fracture treated by PFN-A2. MATERIAL & METHODS: A prospective study of 20 cases of intertrochanteric femur fracture treated by PFN-A2, minimum 6 months of follow up. All cases are evaluated according to Modified Harris Hip Score on residual effects on clinical ground at final examination. Pain & functional capacity are the two basic considerations for this scoring system. Points are given for pain, function, range of motion & absence of deformity. RESULT: Functional result according to Modified Harris Hip score was found to be excellent in 11(55%) patients, good in 5(25%) patients, fair in 3(15%) patients & poor in 1(5%) patients. poor outcome occurs due to development of complications. CONCLUSION : PFN A2 has the advantage of minimal incision, shorter operative time, rapid rehabilitation, lower medical complications among other options.

EndoTech® minimally invasive trigger thumb release

We describe a novel minimally invasive technique for the treatment of trigger thumb. 37 patients with a total of 41 thumbs were included in the study. A visual analogue pain scale was used before surgery and also at 2 week and 6 month follow up visits. The pain was significantly improved from a pre op of 7.92 (+/- 1.6) to .65 (+/- .8) at the 2 week follow up and finally .29 (+/- 1.8) at the 6 month follow up. All of the patients had relief of triggering and only 1 patient required any therapy. This endoscopic technique for trigger thumb allows the surgeon to perform a trigger release with a minimal incision and provides excellent relief without any complications.

Surgical Treatment of Sacrococcygeal Pilonidal Sinus with a Leaf Flap

Background: Pilonidal sinus, occurring in 7% of the population, is a disease found in the cleavage of the buttocks, typically in young males after puberty. This study explored the utility of the leaf flap, a unilobed fasciocutaneous transposition flap, as a reconstructive method for treating pilonidal sinus on the sacrococcygeal area.Methods: We present cases of eight patients with pilonidal sinus who underwent unilobed fasciocutaneous transposition flap surgery. Patients complaining of an abscess in the sacrococcygeal region were initially treated with a minimal incision to drain the abscess, and 14 days of antibiotics administration. Afterwards, the patients were re-evaluated at the outpatient clinic and scheduled for a leaf flap procedure 4 weeks after drainage. Hospitalization, the time required for full activity, and complication rates were recorded.Results: Minor postoperative complications were observed in one patient (12.5%). The patient required re-suturing of his wound due to an infection and wound dehiscence. The mean hospitalization was 10 days (range, 5–23 days), and the period required to return to daily activities was 4 weeks.Conclusion: The leaf flap procedure is recommended because it is a relatively easy method for surgeons, and also because the flap has abundant perfusion. This surgical method was used as the first treatment of choice for sacrococcygeal pilonidal sinus, with the advantages of less patient discomfort, fast healing of the site and short hospitalization. Our results support the leaf flap surgery as a favored treatment for pilonidal sinus.

Percutaneous, MIS and open hallux valgus surgery

There is some confusion in the terminology used when referring to MIS (Minimal invasive surgery) or percutaneous surgery. The correct term to describe these procedures should be percutaneous (made through the skin) and MIS should be reserved for procedures whose extent is between percutaneous and open surgery (e.g. osteosynthesis). Minimal incision surgery may be distinguished in first, second and third generation minimal incision surgery techniques. First generation MIS hallux valgus surgery is mainly connected with the Isham procedure; an intraarticular oblique and incomplete osteotomy of the head of the first metatarsal without fixation. The Bösch osteotomy and the SERI are classified as second generation MIS hallux surgery. They are both transverse subcapital osteotomies fixed with a percutaneous medial K-wire inserted into the medullary canal. For all these procedures, intraoperative fluoroscopic control is necessary. Open hallux valgus surgery can be divided into proximal, diaphyseal and distal osteotomies of the first metatarsal. Reviewing the available literature suggests minimally invasive and percutaneous hallux valgus correction leads to similar clinical and radiological results to those for open chevron or SCARF osteotomies. First generation minimally invasive techniques are primarily recommended for minor deformities. In second generation minimally invasive hallux valgus surgery, up to 61% malunion of the metatarsal head is reported. Once surgeons are past the learning curve, third generation minimally invasive chevron osteotomies can present similar clinical and radiological outcomes to open surgeries. Specific cadaveric training is mandatory for any surgeon considering performing minimally invasive surgical techniques. Cite this article: EFORT Open Rev 2021;6:432-438. DOI: 10.1302/2058-5241.6.210029

Implementation of a Rotational Ultrasound Biomicroscopy System Equipped with a High-Frequency Angled Needle Transducer — Ex Vivo Ultrasound Imaging of Porcine Ocular Posterior Tissues

The mechanical scanning of a single element transducer has been mostly utilized for high-frequency ultrasound imaging. However, it requires space for the mechanical motion of the transducer. In this paper, a rotational scanning ultrasound biomicroscopy (UBM) system equipped with a high-frequency angled needle transducer is designed and implemented in order to minimize the space required. It was applied to ex vivo ultrasound imaging of porcine posterior ocular tissues through a minimal incision hole of 1 mm in diameter. The retina and sclera for the one eye were visualized in the relative rotating angle range of 270° ~ 330° and at a distance range of 6 ~ 7 mm, whereas the tissues of the other eye were observed in relative angle range of 160° ~ 220° and at a distance range of 7.5 ~ 9 mm. The layer between retina and sclera seemed to be bent because the distance between the transducer tip and the layer was varied while the transducer was rotated. Certin features of the rotation system such as the optimal scanning angle, step angle and data length need to be improved for ensure higher accuracy and precision. Moreover, the focal length should be considered for the image quality. This implementation represents the first report of a rotational scanning UBM system.

Implementation of a Rotational Ultrasound Biomicroscopy System Equipped with a High-Frequency Angled Needle Transducer — Ex Vivo Ultrasound Imaging of Porcine Ocular Posterior Tissues

The mechanical scanning of a single element transducer has been mostly utilized for high-frequency ultrasound imaging. However, it requires space for the mechanical motion of the transducer. In this paper, a rotational scanning ultrasound biomicroscopy (UBM) system equipped with a high-frequency angled needle transducer is designed and implemented in order to minimize the space required. It was applied to ex vivo ultrasound imaging of porcine posterior ocular tissues through a minimal incision hole of 1 mm in diameter. The retina and sclera for the one eye were visualized in the relative rotating angle range of 270° ~ 330° and at a distance range of 6 ~ 7 mm, whereas the tissues of the other eye were observed in relative angle range of 160° ~ 220° and at a distance range of 7.5 ~ 9 mm. The layer between retina and sclera seemed to be bent because the distance between the transducer tip and the layer was varied while the transducer was rotated. Certin features of the rotation system such as the optimal scanning angle, step angle and data length need to be improved for ensure higher accuracy and precision. Moreover, the focal length should be considered for the image quality. This implementation represents the first report of a rotational scanning UBM system.