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Biomedical subjects

N Horlock

Publications and source records attributed to N Horlock.

10 recordsLinked to original sources
PubMed2002

Early versus late mobilisation after simple excision of the trapezium.

We randomly selected 39 patients undergoing excision of the trapezium for osteoarthritis of the first carpometacarpal joint into two groups, with mobilisation either at one or at four weeks after operation. The patients were reviewed at a median of six months (6 to 8). The clinical details, the severity of the disease and the preoperative clinical measurements of both groups were similar. Excision of the trapezium resulted in significant improvement in objective and subjective function. Comparison of the outcomes of the two groups showed no differences except that patients found early mobilisation significantly more convenient. Although there was no significant difference in the range of movement between the groups, there was a small loss of movement at the metacarpophalangeal joint in the late mobilisation group. Our findings show that simple excision of the trapezium is an effective procedure for patients with carpometacarpal osteoarthritis of the thumb and that prolonged splintage is neither necessary nor desirable.

Carpal Bones↗
PubMed2001

Zimmer splintage: a simple effective treatment for keloids following ear-piercing.

An auricular keloid occurring following ear-piercing remains a difficult condition to treat. Various treatments have been described, with different reported degrees of success. Pressure therapy has been shown to be an effective treatment for auricular keloids, although the devices used have not all been universally accepted. We assessed 30 patients, between 1989 and 1999, who had been fitted with pressure devices made from Zimmer splints. There was a 50% or greater reduction in the size of each keloid when assessed at 1 year. Zimmer splints are cheap, readily available, easily moulded to fit the patient and can be decorated so that they can be worn as earrings.

Anti-Inflammatory Agents↗
PubMed2001

The postauricular fascial flap as an adjunct to Mustardé and Furnas type otoplasty.

Anterior riberation methods of otoplasty have been criticized because of the risk of anterior hematoma that can cause anterior skin necrosis, scarring, and even cartilage destruction caused by infection. As a result, cartilage-sparing otoplasty such as the Mustardé and Furnas types has been increasingly popular. However, postauricular suture extrusion may result, and recurrence rates of up to 25 percent have been recorded. In this study, cartilage-sparing otoplasty is refined by the addition of a postauricular fascial flap to reduce suture extrusion and recurrence rates. Fifty-one patients underwent otoplasty (45 bilateral, six unilateral). This technique involves the elevation of a fascial flap from the postauricular region. A new antihelical fold is then created by Mustardé sutures, and the conchal bowl is rotated by Furnas-type concha-mastoid sutures. The fascial flap is then advanced to cover the sutures with a supplementary vascularized layer to prevent suture extrusion. In addition, the advancement of the flap acts as a postauricular support to prevent recurrence. A natural-looking antihelical fold and helical rim is created by this technique. There were no hematomas. There was recurrence in eight ears (8 percent) in six patients. Two patients requested further surgery. No patients developed suture extrusion or granuloma. This is a simple and intrinsically safe procedure and does not cause irreparable complications such as anterior scarring or skin necrosis. The postauricular fascial flap seems to prevent suture extrusion. It may also help to reduce recurrence rates to acceptable levels.

Adolescent↗
PubMed2000

Aggressive basal cell carcinoma in young patients: fact or fiction?

It has been suggested that basal cell carcinomas (BCC) arising in younger patients may be of a more aggressive phenotype than those that present in the older population. The purpose of this study was to investigate this hypothesis by comparing the histological types of BCC in a large cohort of young and old patients.A total of 271 histological specimens and clinical records were evaluated. A consecutive series of 120 patients under 50 years old were compared with a consecutive series of 151 patients over 50 years of age. Tumours were classified according to the accepted definition of aggressive (morphoeic, infiltrative and micronodular) and less aggressive (nodular and superficial) histological growth patterns. Aggressive growth types were found in 35% of patients over 50 and 33% of patients under 50. There was a higher rate of incomplete excision in younger patients but this did not reach significance (16% compared to 9%, P = 0.1). This study found that BCC arising in young patients are not histologically different to those found in the older population. Clinically observed aggressive behaviour of BCC in young patients may result from inadequate surgical excision due to cosmesis and diagnostic doubt.

Adolescent↗
PubMed2000

Can the carbon dioxide laser completely ablate basal cell carcinomas? A histological study.

Carbon dioxide laser ablation has been advocated as an alternative therapeutic modality for basal cell carcinoma. This study examined the limitations of carbon dioxide laser ablation for BCCs by the formal excision and histological examination of the tumour bed, following laser therapy. We evaluated the tumour type and ablation depth required to ablate the tumours completely. Fifty-one selected BCCs, ranging from 4 to 35 mm, were ablated with a carbon dioxide laser combined with a microprocessor controlled optomechanical flash scanner. Clinically there were 21 superficial, 28 nodular and 2 infiltrative types. Complete ablation at the deep margin was associated with ablation depth (P = 0.006) and with tumour type (P = 0.01). Overall, all tumours of superficial subtype (found most commonly on the trunk) could be completely ablated reliably, provided they were lasered to a depth of the middle dermis or deeper. In contrast, nodular tumours could not reliably be ablated by this method. A small subset of nodular tumours less than 10 mm diameter, however, were all completely ablated provided they were lasered to a depth of the lower dermis or deeper, however this may result in delayed healing and scarring. We conclude that this fast modality is useful for the treatment of some BCCs provided strict selection criteria are met. Laser ablation would be most beneficial for patients with multiple superficial BCCs.

Adult↗
PubMed1999

The selection of patients for breast reduction: should health commissions have a say?

Selective or restrictive access policies operate for breast reduction, despite proven benefits. The rationale for these policies, in particular the requirement of psychiatric assessment prior to a plastic surgical consultation, as an aid to patient selection by the health commission, was examined in 57 general practice referrals to a plastic surgical unit. In 22 cases, these policies deterred the patient or GP from pursuing the referral further. Sixteen cases were funded by the health commission directly, 16 patients required psychiatric or orthopaedic referrals, and three patients were refused funding outright. The decision to fund, reject or refer to a non-plastic-surgical specialist was not statistically related to the patients' symptoms. Non-plastic-surgical assessment resulted in referral for a plastic surgical opinion in 15 of 16 patients. We conclude that these selective policies are unsatisfactory, since patient management is not related to symptoms and the use of non-plastic-surgical opinions by the health commission as an aid to rationing is of little benefit.

Contract Services↗
PubMed1998

Cellular proliferation characteristics do not account for the behaviour of horrifying basal cell carcinoma. A comparison of the growth fraction of horrifying and non horrifying tumours.

This study compared the clinical features, histological subtype, growth fraction (by Ki67 immunohistochemistry) and proliferation pattern of 22 clinically defined horrifying basal cell carcinoma compared to 81 non horrifying lesions. Late presentation was associated with half of the horrifying tumours. The other half developed horrifying tumours despite early intervention. The horrifying tumours exhibited a variety of histological growth patterns. A total of 50% were infiltrative, 23% nodular and 18% micronodular. There was no difference in the growth fraction or proliferation pattern between horrifying and non horrifying tumours of similar growth pattern (P = ns), although infiltrative tumours in either group exhibited a significantly higher growth fraction than nodular tumours (P < 0.01). This suggests that there is no intrinsic biological difference between horrifying and non horrifying tumours to account for their behaviour. We conclude that late presentation, failed or inadequate early management especially of infiltrative tumours (and other subtypes) determines the development of horrifying tumours.

Adult↗
PubMed1998

5-year series of constricted (lop and cup) ear corrections: development of the mastoid hitch as an adjunctive technique.

Despite the multitude of corrective procedures described, adequate surgical correction of the congenital constricted ear remains a challenge. The maintenance of the shape and elevation of the reconstructed upper neohelix poses a particular problem. In the present series, experiences with lop ear correction utilizing standard techniques and the use of the mastoid hitch as a useful adjunct to these procedures are described. A total of 19 ears were reconstructed. There were three type 1, eight type 2a, seven type 2b, and one type 3 deformities (Tanzer classification). A graded sequence of procedures was adopted. Mild deformities were corrected by cartilage scoring techniques; a V-Y advancement of the helical root was added for moderate deformities. Cartilage expansion by a banner flap was required for more severe deformities. A mastoid hitch, whereby the refashioned upper neohelix is sutured to the mastoid fascia, should be used as an adjunct to these procedures to maintain helical elevation and prevent recurrence. Severe type 3 deformities may require autologous auricular reconstruction. Mean follow-up time was 1 year. There were six excellent, seven good, four fair, and two poor results. Two patients who had not had mastoid hitch procedures developed a recurrence of the lop deformity. Adequate surgical correction of constricted ear deformities requires a variety of surgical techniques. The mastoid hitch being used for constricted ear correction has not been described elsewhere. The mastoid hitch is a useful adjunctive procedure that may be used effectively in combination with other procedures.

Adolescent↗
PubMed1997

Gorlin's syndrome: the role of the carbon dioxide laser in patient management.

The treatment of multiple basal cell carcinomas in patients with Gorlin's syndrome presents a therapeutic challenge. The carbon dioxide laser presents a unique treatment option due to increased surgical speed, a bloodless operating field, reduced postoperative pain and discomfort, and acceptable scars. Six patients with Gorlin's syndrome have been treated with the carbon dioxide laser. Between 14 and 110 lesions were treated in one session under local anesthesia. Pre- and postlaser biopsies of the lesions confirm complete eradication of the tumors. Mean follow-up is 20 months. No local recurrence has been observed.

Adult↗