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Biomedical subjects

G R Fritz

Publications and source records attributed to G R Fritz.

7 recordsLinked to original sources
PubMed1997

Complications following mucous cyst excision.

Eighty-six mucous cysts in 79 patients were surgically excised. Follow-up was carried out at an average of 2.6 years. Fifteen digits (17%) had a residual loss of extension of 5 to 20 degrees at the IP or DIP joints. One patient developed a superficial infection and two developed a DIP pyarthrosis, which eventually required DIP arthrodesis. Nail deformities were present in 25 of 86 digits preoperatively (29%), 15 of which resolved after surgery (60%). Four of 61 digits developed a nail deformity which was not present preoperatively (7%). Three of 86 digits (3%) developed recurrence. Other complications included persistent swelling, pain, numbness, stiffness, and radial or ulnar deviation at the DIP joint. We recommend that patients be informed preoperatively of the potential risks of decreased range of motion, persistent swelling and pain, infection, recurrence, and persistent or postoperatively acquired nail deformity.

Female↗
PubMed1995

First metatarsocuneiform motion: a radiographic and statistical analysis.

Fifty volunteers with 100 asymptomatic feet were evaluated by physical examination, radiographic analysis, and questionnaire. This investigation was used to evaluate first metatarsocuneiform motion and establish normal values at this joint. Normal first ray sagittal range of motion was 4.37 degrees (SD, +/- 3.4 degrees). The shape of the distal cuneiform was then categorized by three classification methods. Multiple independent variables were cross-referenced to determine their relationship with motion and shape at the distal cuneiform. Hyperflexibility of the thumb correlated with first ray hypermobility. No correlation was found between first ray motion and sex, age, intermetatarsal angle, side, skin stretch, hyperextension of the knee, hyperextension of the elbow, or shape of the distal cuneiform.

Adolescent↗
PubMed1982

Relation between levels of circulating ovarian steroids and pituitary gonadotropin content during the menstrual cycle of the rhesus monkey.

Anterior pituitary glands were removed from 27 intact cycling rhesus monkeys sacrificed in the early (Day 2), mid (Days 6--9) and late (Days 11--12) follicular phase, and in the early and late luteal phase (3--5 and 10--15 days after the midcycle luteinizing hormone (LH) surge). Assignment of cycle stage was confirmed by the pattern of circulating steroid and gonadotropin levels seen in the blood samples taken daily throughout the cycle. The anterior pituitary glands were weighed, stored at -30 degrees C and assayed for LH and follicle-stimulating hormone (FSH) content by specific radioimmunoassays. Serum estradiol levels and pituitary LH and FSH contents rose simultaneously during the follicular phase. After the preovulatory gonadotropin surge, pituitary LH content was low and invariant. Pituitary FSH content reached a nadir in the early luteal phase and tended to rise in the late luteal phase. Multiple correlation analyses revealed that there is a positive correlation between rising levels of estradiol in the circulation and pituitary LH (p = 0.003) and FSH (p = 0.017) content, and that there is a significant negative correlation between circulating progesterone levels and pituitary FSH content (p = 0.002). Pituitary LH content is less strongly related to circulating progesterone levels. There was no significant difference in the wet weights of the anterior pituitary glands during the five phases of the menstrual cycle studied.

Animals↗