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15 recordsLinked to original sources
PubMed2026

Arthroscopic Correction of Pincer-Type FAI in the Presence of Acetabular Retroversion Results in Excellent Patient-Reported Outcomes With Low Risk of Reoperation or Conversion to Arthroplasty at Minimum 5 Years.

BACKGROUND: Acetabular retroversion is a distinct morphologic variation that may result in pincer-type femoroacetabular impingement (FAI). The role of arthroscopic management within this cohort is not fully understood. PURPOSE: To assess patient-reported outcome measures (PROMs) and survivorship at 5-year follow-up in a series of cases undergoing arthroscopic correction of pincer-type FAI with acetabular retroversion. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: A single-center, prospective hip preservation registry was reviewed for all cases undergoing primary hip arthroscopy for symptomatic FAI between January 2014 and July 2020, with documented radiographic assessment of acetabular retroversion (ie, presence or absence of crossover sign, ischial spine sign, and/or posterior wall sign on a standing, standardized anteroposterior radiograph). Exclusion criteria were T&#xf6;nnis grade >1, concomitant pathologies (protrusio, Perthes disease, avascular necrosis), excessive pelvic rotation or tilt on radiographs, and/or no crossover sign. Cases were assigned to 1 of 2 groups: moderate-global retroversion group (study group: crossover sign plus either or both ischial spine sign and posterior wall sign) or control group (crossover sign only). Case-control (1:1) fuzzy matching was performed based on age (&#xb1;2 years), sex, and T&#xf6;nnis grade (exact). Clinical outcome evaluation included assessment of PROMs (modified Harris Hip Score [mHHS], 36-item Short Form [SF36], University of California-Los Angeles Activity Scale [UCLA], Western Ontario and McMaster Universities Osteoarthritis Index [WOMAC]), achievement of Patient Acceptable Symptom State (PASS), satisfaction, rates of revision arthroscopy, and arthroplasty-free survivorship, both preoperatively and 5 years postoperatively. Statistical analysis was performed using SPSS v29. RESULTS: A total of 201 cases (120 global, 81 moderate) in the moderate-global retroversion group were matched with 201 control cases. Mean age was 30.6 &#xb1; 10.2 years; the sample was 90% male. The rate of revision arthroscopy was similar: n = 11 (6%) in both groups (P = .974). No conversion to periacetabular osteotomy (PAO) occurred in either group. Arthroplasty-free survivorship was 98.2% (retroversion group) and 98.8% (control group) (&#x3c7;2 = 0.189; df = 1; P = .664). Significant improvements in PROMs from baseline were noted (P < .001 for all, in both groups). In total, 81% (moderate-global retroversion group) and 73% (control group) were satisfied at 5 years (P = .103). No significant difference was seen in PASS achievement rates for any of the PROMs between groups: mHHS, 62.1% versus 65.9% (P = .498); UCLA, 60.0% versus 52.2% (P = .192); SF36, 59.8% versus 64.7% (P = .458); WOMAC, 63.5% versus 67.3% (P = .553), for moderate-global retroversion and control groups, respectively. CONCLUSION: Hip arthroscopy for moderate and global acetabular retroversion resulted in significant improvement in clinical outcomes, with high satisfaction and arthroplasty-free survivorship at 5 years, consistent with a case-control matched group without acetabular retroversion (focal retroversion, pincer FAI). Arthroscopy alone, without anteverting PAO, was an effective surgical management approach for symptomatic FAI in the presence of acetabular retroversion.

Humans↗
PubMed1978

A behavioral analysis of complete unilateral section of the pyramidal tract at the medullary level in Macaca mulatta.

Ten Macaca mulatta monkeys were operantly conditioned to perform three motor paradigms designed to evaluate single and combination finger movements. Eight of these monkeys were retested after left medullary pyramidotomy; 2 monkeys underwent left medullary pyramidotomy prior to conditioning. All animals were tested for three years after operation. Monkeys with a completely sectioned medullary pyramid could, with time, perform difficult motor paradigms that required: (1) both individual and combination finger movements; (2) proximal upper extremity motor control; (3) thumb and index finger pincer grasp; and (4) the ability to preprogram and then execute a precision hand movement. The greater the extent of pyramidal tract destruction, the longer the time necessary for recovery of both discrete finger movement and pincer grasp, the greater the effort needed to attain recovery of hand function, and the weaker the affected musculature. The 2 animals in which pyramidotomy of at least 70% of the tract preceded efforts at operant conditioning learned and performed difficult motor paradigms. In all animals, neurological examination revealed that the most enduring and functionally most important deficit that interferes with hand function following pyramidotomy is loss of contactual hand orienting responses and failure of reflex sensorimotor adjustments.

Animals↗
PubMed1992

Neurodevelopment in late infancy after prenatal exposure to benzodiazepines--a prospective study.

Growth and neurodevelopment at 6, 10 and 18 months of age have been studied prospectively and longitudinally in a series of 17 children born to mothers who used benzodiazepines (BZD) in therapeutic doses as their only psychotropic drug throughout pregnancy. The results were compared with a group of 29 children born to mothers without any known use of psychotropic drugs. The BZD-exposed children caught up their low mean birth-weight, at an early stage, whereas the slightly decreased head circumference at birth remained at the same low level. In five infants, a pattern of craniofacial anomalies was found. Deviating neurodevelopmental and clinical symptoms and signs were common. The gross motor development was retarded at 6 and 10 months, but was nearly normal at 18 months. Impaired fine motor functions were found on all follow-up occasions. At 18 months, the most prominent finding was a delayed development of pincer grasp. The BZD-exposed children showed deviations in muscle tone and pattern of movements more frequently than children in the reference group. The study suggests that the use of BZD in therapeutic doses throughout pregnancy can have negative effects on the development of children up to 18 months of age. The long-term hazards cannot be evaluated from these results. A further follow-up at early school age is needed and is in progress.

Abnormalities, Drug-Induced↗
PubMed1992

Injection therapy of superficial rheumatoid nodules.

Although intralesional corticosteroid injection of subcutaneous rheumatoid nodules was mentioned in 1968, this simple procedure is not commonly practised. A placebo-controlled, double-blind trial of intralesional corticosteroid injection using 24 rheumatoid nodules from 11 patients was carried out to determine the efficacy and safety of the procedure. Nodules injected with methylprednisolone and lignocaine regressed significantly more than nodules injected with placebo (lignocaine alone). This was consistently shown in all modalities of assessments which included patients' assessments (P < 0.001) and investigator's assessments (P < 0.001) of the percentage change in nodule size, and gross measurements of nodule volumes using a pincer (P < 0.001). Nine of 12 active injections produced > or = 50% loss in nodular volume with complete disappearance of two nodules. This compares with only one out of 12 placebo injections which resulted in > or = 50% loss in nodular volume. The patients found all 12 active injections to be worthwhile compared to only two of 12 placebo injections being worthwhile. The only complication of injection therapy observed was that of pain during the procedure.

Adrenal Cortex Hormones↗
PubMed1976

Degenerative lumbar spondylolisthesis with an intact neural arch (pseudospondylolisthesis).

Twenty patients treated for degenerative spondylolisthesis with an intact neural arch principally at the L4-5 interspace had neural compression caused by dislocation of the vertebral bodies and intrusions of lamina and enlarged, arthrotic facets into a stenotic spinal canal. The resulting "pincer" effect caused complete or partial block demonstrable on myelography, with nerve root and cauda equina compression. Most of the patients were women aged 45-84 years. Seven had neurogenic claudication. The majority had unrestricted straight-leg raising, and no signs of acute neural entrapment were seen as in patients with a herniated disc. Absent ankle reflexes, and weakness and atrophy of the anterior tibial muscle group were common, while sensation was relatively undisturbed. Treatment consisted of liberal laminar decompression including foraminotomy and medial or total facetectomy. Good-to-excellent results were obtained, and no patient was made worse by the procedure.

Aged↗
PubMed1976

[Isolated obliteration of the popliteal artery. Angiographic, functional and surgical considerations].

31 patients suffering from isolated obliteration of the popliteal artery were selected for reporting from a series of 1500 peripheral angiographies. It is pointed out that the lesion is due principally to a segmentary localization of atherosclerosis. A case of adventitial cyst and one of muscular pincer syndrome have also been encountered. Attentive study of angiographic pictures showed up a number of behaviour modalities of the collateral circulation. The surgical approaches available in such circumstances are also reported.

Adolescent↗
PubMedDate not supplied

[The model EN-57M apparatus for high-frequency electric surgery].

The model EN-57M apparatus is intended for cutting and coagulation of soft tissues with high-frequency currents and it represents a modernized version of the Model EN-57. In this new model the number of outlets has been increased, the set of accessories -- improved, the complement of monoactive electrodes -- broadened, a biactive pincer -- added and the design of passive electrodes -- changed. The active electrodes, electrode-holders and cables attached to them are manufactured of materials permitting their steam and air sterilization. Particular consideration has been given to the electric safety of the apparatus in providing protection against burns caused by the high-frequency current.

Electrosurgery↗
PubMedDate not supplied

[Incomplete chronic duodenal stenosis caused by compression by the aorta and mesenteric artery].

In the light of data from the literature, as well as on the personal observations made in 5 cases of chronic, imcomplete duodenal stenosis through aortic-mesenteric pincers that have been hospitalized and operated, the authors stress: the complexity of the syndrome, the difficulties encountered in the establishment of the diagnosis, the severe consequences of the evolution, the necessity to apply surgical treatment as soon as possible.

Adolescent↗
PubMed1992

[Digestive disorders in rabbits and guinea pigs].

Numerous digestive tract diseases in pet rabbits and guinea pigs result from both an inherent physiological predisposition and from poor feeding and husbandry. A large proportion of digestive disturbances in rabbits and guinea pigs are secondary to changes in the oral cavity caused by inadequate teeth wear. The required regular trimming of the cheek teeth using a modified spatula and hollow pair of pincers is described and illustrated. The symptoms, diagnosis, prognosis and treatment of a selection of digestive disorders, as commonly encountered in small animal practice, are presented. The difficulties of using antibiotics in view of the gram positive intestinal flora and possible dysbacteria, dysentery and enterotoxaemia are considered. Finally, advice on feeding and on the rearing of orphan neonates is given.

Animal Feed↗
PubMed1992

Dentin wetness, permeability and thickness and bond strength of adhesive systems.

This study evaluated the shear bond strength of Scotchbond 2, Clearfil PhotoBond, Tenure, All-Bond and Vitrabond and their sensitivity to dentin permeability, wetness and thickness. Occlusal dentin was prepared from extracted human teeth that were connected to a hydraulic pressure apparatus. Dentin permeability was calculated as a fluid flow rate and dentin surface wetness was evaluated using the Periotron device. Dentin thickness was measured using a pincer caliper. Shear bond strength was tested after 24 hours storage under hydrostatic pulpal pressure. Several significant correlations were found between dentin wetness, dentin permeability and remaining dentin thickness and the shear bond strengths of Scotchbond 2, Tenure and All-Bond/no etch. No apparent correlations were observed for the other adhesive systems.

Acid Etching, Dental↗
PubMed1976

[A false historic representation of the martyrdom of St. Apollonia: decapitation].

The author quotes the only known historical witness on the life and death of Santa Apollonia: the description given by the historian Eusebius. According to his description of the martyrdom of the Saint, her teeth were extracted and her jawbones broken. An extensive iconography exists in museums, churches and private collections. According to statues and images of the Saint, the martyrdom took place by stoning or else by the use of instruments of torture such as pincers, gouge and gammer, and dentists' forceps. Although it is most probable that recourse was taken to lapidation, it is also likely that the above instruments were used, because it agrees with the technic then in use in dental surgery and does not disagree in any way with the historical facts. Such is not the case regarding the beheading. However, the author quotes three groups of iconographic documents displaying that kind of torture. One of them, shown for the first time, appears in a Book of hours of French origin, dating from the 15th century, which exists in the Calouste Gulbenkian Museum, in Lisbon, Portugal.

Egypt, Ancient↗
PubMedDate not supplied

[Use of titanium alloys for medical instruments].

On the ground of an analysis into properties of titanium and its alloys the fields of their possible utilization for making various medical instruments are proposed. Because of their insufficient hardness and wear-resistance the titanium alloys cannot be recommended for making medical instruments with thin cutting edges. For the reasons of their insufficient strength, low wear-resistance and substandard modulus of elasticity, it is inexpedient to use titanium alloys in making many types of clamping medical instruments. Nor is it advisable to employ titanium alloys in handles of the instruments, for this may lead to a contact corrosion of their working parts. The use of titanium alloys is recommended for making bone-joining members, retracting medical instruments, of the spatula and speculum types, some kinds of non-magnetic pincers and ultrasonic medical instruments.

Alloys↗
PubMed1976

Terminal (1)(q43) long-arm deletion of chromosome no. 1 in a three-year-old female.

A 3-year-old Latin female is reported with a terminal deletion of the No. 1 chromosome, karyotype formula 46, XX, del(1) (q43). Principle clinical features include: Anatomic - microcephaly; bilateral, convergent strabismus; epicanthus; brachycephaly; bulbar nose; sparse hair; partial soft tissue syndactylism between 2nd and 3rd fingers which are slightly tapered; whorls on all 10 fingers; mild prognathism; solitary kidney; vaginal stenosis; vesicoureteral reflux; asymmetric feet; and subluxation of peroneal tendons around the fibula with severe pronation and heal valgus deformity. Neurologic - moderate motor and mental retardation; high-pitched, shrill cry; absent pincer grasp at 3 years; and grand mal seizures documented from 9 months of age.

Abnormalities, Multiple↗
PubMed1976

[Pests at Baltic Sea coast. II. Summary of most important groups on insects besides Coleoptera and Diptera].

In the special holiday situations at the Baltic coast of GDR, species of very different insect groups may become annoying to man. Own experiences in this field are reported (excepting Coleoptera and Diptera). The earwig, Forficula auricularia, has many varying aspects of a health pest (also in the respect of social hygiene). This species, too, may pinch painfully with his pincers. The lice species Pediculus capitis and Pthirus pubis are met with sometimes. Limothrips cerealium may be annoying not only when swarming in mass, but also individual specimens (crawling on the skin or piercing it). Ants may be a pest in varying manners. A special example of this is if they invade sand castles [sun bathing places on the beaches surrounded by sand walls]. Wasps are attracted by different ways to childrens' holiday camps. In 1973, they were even aggressive on the beach of Hiddensee. Caterpillars of Thaumatopaea pinivora may become a serious health pest in individual cases. The real cause is not always detected by laymen. Fleas occur more or less regularly. Sometimes they are incorrectly diagnosed or reported.

Animals↗