Search PubMed⌕ Search

Biomedical subjects

H G Thomson

Publications and source records attributed to H G Thomson.

At least 37 records · Page 2Linked to original sources
PubMed1989

Microtia reconstruction: does the cartilage framework grow?

The use of free rib cartilage ear frameworks in unilateral microtia reconstruction has prompted much discussion about their potential for growth. The senior author has reconstructed ear frameworks in 132 microtia patients, most of whom were under 3 years of age when surgery was initiated. Of this group, 29 were assessed for ear growth through comparison of the lead-plate model of the original normal ear to the normal ear growth and the reconstructed ear framework after a period of at least 2 years. Similarly, 14 reconstructed ears were compared to 14 normal ears at least 2 years after reconstruction. The perimeters of tracings made from the original lead plates and of tracings of normal and reconstructed ears were determined by image analysis techniques. The results demonstrated no significant difference in growth between normal ears and reconstructed ear frameworks after an interval of at least 2.5 years. Therefore, the reconstructed ear is growing at a rate similar to that of the normal ear.

Cartilage↗
PubMed1988

The fate of sternotomy scars in children.

The scars from sternal split incisions were examined and rated in 101 consecutive children attending a cardiology clinic at least 1 year after surgery. Each scar was rated as excellent, good, acceptable, or poor. Factors that may correlate with scar quality were analyzed. This analysis showed that poor scars were most likely to have been closed with intracuticular polyglycolic acid suture; males were more likely to have better scars than females; the younger the child at operation, the better was the scar result; and only 18 of the 69 scars that were hypertrophic 1 year postoperatively remained so after a mean of 5.5 years.

Adolescent↗
PubMed1985

Pharmacologic action of isoxsuprine in cutaneous and myocutaneous flaps.

The therapeutic effects of isoxsuprine on skin capillary blood flow and viability were studied in arterial buttock flaps, latissimus dorsi myocutaneous flaps, and random skin flaps in pigs. It was observed that parenteral isoxsuprine increased capillary blood flow to the skin of arterial buttock flaps and the skin and muscle of latissimus dorsi myocutaneous flaps in a dose-response manner, with a maximum vascular effect observed at 1.0 mg/kg. However, this maximum effective dose of isoxsuprine did not have any significant effect on skin viability in the cutaneous and myocutaneous flaps compared with the control. Examination of the distribution of capillary blood flow within the flaps at varying distances from the pedicle revealed that isoxsuprine did not increase capillary blood flow or perfusion distance in the distal portion of the skin of arterial buttock flaps, latissimus dorsi myocutaneous flaps, and random skin flaps. The increased capillary blood flow as a result of isoxsuprine treatment was limited only to the arterial portion of the arterial buttock flaps and latissimus dorsi flaps. Therefore, it is concluded that isoxsuprine alone is not effective in augmentation of skin viability in cutaneous and myocutaneous flaps. The pharmacologic action of isoxsuprine on the vasculature in the skin and muscle of flaps was also discussed.

Animals↗
PubMed1985

Clinical evaluation of microform cleft lip surgery.

The definition of microform cleft lip and the dilemma surrounding its surgical correction were reviewed. A modified Williams method for assessing cleft lips was employed by two panels (each of four evaluators) with 24 patients who had similar deformities and corrective operations. In 20 patients the results appear to have justified the surgery, but in the remaining 4, who were less seriously deformed, the perceived improvement was minimal or even nonexistent. The perceptions and wishes of the parents and patient must also be considered in determining the success of this procedure, which was not done in this study.

Child↗
PubMed1985

The residual unilateral cleft lip nasal deformity: a three-phase correction technique.

The author presents a three-phase correction technique for the residual unilateral cleft lip nasal deformity. This procedure involves a sculpting excision of the alar rim, use of this alar rim as an interpositional flap in lengthening the columella, and augmentation of the nasal tip and perialar sulcus with a free ear conchal cartilage graft. The concept has been incorporated in the revisionary surgery program of 74 patients over a period of 5 years with a minimal follow-up of 2 years. The majority of the patients are operated on between the ages of 5 and 7 years based on the concept of a need for a "tidy appearance" by first grade.

Cleft Lip↗
PubMed1985

Isolated naso-ocular cleft: a one-stage repair.

The naso-ocular cleft is a rare defect; however, isolated alar clefts with or without additional hamartomatous local tissue are an even rarer problem. The authors describe six unilateral and one bilateral cleft patients who were all initially repaired using the same operative procedure. The concept of this procedure is based on the principle that there is basically no soft-tissue deficiency but rather a malpositioning of the parts. The leading edge of the ala is re-created by a rotation advancement of both the medial and the lateral segments adjacent to the cleft. The created secondary defect is filled with a paranasal transposition flap. Three of our patients had hamartomatous excesses and were the most difficult to balance, and at the same time, two of these patients required subsequent bridging or augmentation using a free conchal cartilage graft. Examples of the operative procedures are outlined both schematically and clinically.

Humans↗
PubMed1984

Burn injury to the face with associated fracture caused by a flare gun: a case report.

A case is presented of a child who sustained a full-thickness burn to the glabella and nose area, associated with an underlying fracture and cerebrospinal fluid leakage. This first reported case of a flare gun injury illustrates some important principles of facial management and soft tissue cover, in both the acute and the reconstructive phases.

Blast Injuries↗
PubMed1984

Free cartilage grafts: the role of perichondrium.

Using adult rabbits, free ear cartilage grafts with and without perichondrium were overlapped and sutured to each other and then placed in preformed pseudosheath pockets for 1 to 12 weeks. The specimens were evaluated at various time intervals as to histopathologic changes at the interface and breaking load as a measure of the strength of the healing response. The results obtained strongly suggest that perichondrium responds briskly to repair injury and that the breaking load is greater in the presence of perichondrium and increases with time. It is suggested that perichondrium be included with free cartilage grafts for optimum survival and intercartilaginous healing.

Animals↗
PubMed1982

A rapid and effective method of skin graft stabilization in burned children.

A rapid and effective method of securing multiple skin grafts to burned children is described. It entails stapling an elastic net over grafts that have been backed onto Sofratulle. The staples pierce normal or healed tissue on the periphery of the wound, thus avoiding hemorrhage. The two-way stretch of the net prevents shearing during movement yet facilitates access for adjustment and routine graft care. Skin grafts are held against their bed with firm, even pressure. This method is not only easier and more rapid than direct stapling methods but offers a better prospect of a complete take.

Bandages↗
PubMed1981

Giant nevus of the scalp associated with intracranial pigmentation. Case report.

A case is reported of aggressive cellular blue nevus of the scalp. Intracranial pigmentation in association with a melanocytic nevus of the scalp may indicate either benign coexisting melanosis, local extension, or invasive malignancy. The importance of accurate diagnosis is discussed, and the need to be prepared to carry the excision deep enough to include the dura is illustrated.

Arachnoid↗
PubMed1979

The Cyrano nose: a clinical review of hemangiomas of the nasal tip.

It is always difficult to establish one preferred management program for all patients with any lesion, but serious consideration must be given to "no-touch" management of cavernous or capillary-cavernous hemangiomas of the nasal tip. This requires frequent consultations with the parents to furnish psychological support. If extreme pressure from the parents makes surgery inevitable, the operation should be limited to the immediate confines of the nasal tip.

Adolescent↗
PubMed1978

Ophthalmic sequelae of infantile hemangiomas of the eyelids and orbit.

The major findings in a study of 51 infants and children with infantile hemangioma of the eyelid were as follows: Visual complications occurred in 27 patients. The most common complications were amblyopia (in 22) and strabismus (in 17). Amblyopia of 6/60 (20/200) or less was probably caused by stimulus-deprivation, but amblyopia in the range of 6/30 (20/100) to 6/12 (20/40) was likely caused by anisometropia or strabismus. Eyelid occlusion of six months or more invariably resulted in amblyopia of 6/60 (20/200) or less. Occlusion for even one month carried a risk of amblyopia. Each child must be considered individually for therapy, which must be started as early as possible. Patients should receive careful follow-up from the beginning to prevent severe amblyopia. For difficult cases, we need more efficacious, safe methods to induce regression of these tumors.

Adolescent↗
PubMed1977

Pediatric plastic surgery.

Each section of this article has been discussed in severe brevity. Potential pitfalls have been expanded in an attempt to be helpful to the general surgeon who attends patients with these clinical problems. Making the relatives aware of a potential complication in its broadest sense is the responsibility of the surgeon and can only be done if there is cognizance of these problems. The author hopes that this article has accomplished this purpose, albeit in a brief format.

Amputation, Traumatic↗