Laser myringoplasty for tympanic membrane atelectasis.

Objective: To review our experience with laser myringoplasty using a potassium-titanyl-phosphate (KTP) laser for pars tensa atelectasis.

Study Design: Retrospective review.

Methods: A pulsed diode KTP laser (532 nm) was used to tighten the tympanic membrane after lysis of middle ear adhesions through a myringotomy.

Bipolar and monopolar radiofrequency treatment of osteoarthritic knee articular cartilage: acute and temporal effects on cartilage compressive stiffness, permeability, cell synthesis, and extracellular matrix composition.

The cellular, biochemical, biomechanical, and histologic effects of radiofrequency-generated heat on osteoarthritic cartilage were assessed. Articular cartilage explants (n=240) from 26 patients undergoing total knee arthroplasty were divided based on Outerbridge grade (I or II/III) and randomly assigned to receive no treatment (controls) or monopolar or bipolar radiofrequency at 15 or 30 W. Both potentially beneficial and harmful effects of radiofrequency treatment of articular cartilage were noted.

Parathyroid hormone-related peptide as a cause of hypercalcemia in squamous cell carcinoma of the head and neck: a case presentation and subject review.

Background: Serum levels of parathyroid hormone-related peptide (PTHrP) can be elevated with malignancy and cause hypercalcemia, which has been associated with a poor prognosis.

Methods: We present a case of supraglottic squamous cell carcinoma with elevated serum PTHrP and hypercalcemia. The patient was acutely managed with intravenous fluids, furosemide, and zoledronic acid and then underwent a total laryngectomy and modified radical neck dissection.