Biomedical subjects

F Barca

Publications and source records attributed to F Barca.

7 recordsLinked to original sources

PubMed1998

Osteoid osteoma of the phalanx: enlargement of the toe--two case reports.

After a review of the literature, two cases of osteoid osteoma involving phalanges of the toes are reported. Physical findings of osteoid osteoma vary with the site of the tumor; in the foot, particularly the toes, it presents various atypical and characteristic features. Its more frequent cancellous and subperiosteal localization in the small bones of hand and foot, showing atypical roentgenographic findings, poses particular problems in diagnosis. In the osteoid osteoma of the phalanges, characteristic enlargement of the toe or finger seems to be frequent and with a typical clinical history may be considered a reliable sign of suspected osteoid osteoma. Specialized imaging techniques may hasten diagnosis, but only an accurate clinical history and the characteristic findings with a high index of suspicion can allow for a proper diagnosis.

Adult↗

PubMed1997

Tendon arthroplasty of the first metatarsophalangeal joint in hallux rigidus: preliminary communication.

A biological arthroplastic interposition is described for hallux rigidus, in which the rolled plantaris tendon is positioned at the base of the first phalanx. Eleven patients, for a total of 12 feet, underwent surgery using this technique. The average follow-up was 21 months. In all patients, pain and supination gait disappeared. The average metatarsal motion increased 44 degrees in dorsiflexion. The tendon packet seems to be a good biological spacer, because it adapts and models itself to the new joint function.

Arthroplasty↗

PubMed1995

Gait analysis of the donor foot in microsurgical reconstruction of the thumb.

Clinical and step evaluations by a piezoelectric system board were performed in 54 patients who underwent microsurgical reconstruction of the thumb by great or second toe transfer. Forty-four patients were male and 10 were female. In 13 cases, the thumb was reconstructed by the Morrison wrap-around technique. In 27 cases, an extended variant of the Morrison technique was used in which the whole distal phalanx was harvested with skin and nail apparatus. Four patients were treated by great toe transfer and 10 were treated by second toe transfer. Follow-up ranged from 2 to 144 months. The group of patients treated by the wrap-around technique presented hallux rigidus in 38.5% of cases. The group of patients treated by the extended variant of the Morrison technique presented a lesser tendency to hallux rigidus but a clear reduction of the pushing phase of hallux. The group of patients treated by second toe transfer presented a third and fourth metatarsal bone overload that was confirmed by a statistical Wilcoxon test: overload was linked to a plantar hyperkeratosis at the third metatarsal (20%), fourth metatarsal (10%), or fifth metatarsal bone (20%). A claw deformity of the third and fourth toes was observed in 20% of these patients. The four patients who underwent microsurgical reconstruction of the thumb by great toe transfer exhibited an overload of central and lateral metatarsal bones. Second toe transfer is not associated with the functional or cosmetic changes seen in great toe transfer and is therefore preferred.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗

PubMedDate not supplied

Forefoot postoperative continuous pain control by nonelectronic device.

The authors present a system against postoperative pain in forefoot operations, which functions by continuous infusion of anesthetic in the malleolar internal space. The system (Single-Day Baxter Infusor) was utilized in 145 patients who had undergone forefoot surgery. The effectiveness of the method was evaluated by means of a numeric scale (0 to 5) reflecting pain level. The method was effective in controlling postoperative pain in 110 cases (score 0 to 1); 25 cases (score 2) reported pain in the dorsal hallux, in the deep peroneal area, whereas in 10 cases (score 4 to 5 on the scale), nonsteroidal anti-inflammatory drugs had to be administered.

Arthritis, Rheumatoid↗

PubMedDate not supplied

Austin/chevron osteotomy fixed with bioabsorbable poly-L-lactic acid single screw.

The authors propose a new bioabsorbable fixation device to be applied to V-shaped transverse osteotomies of the head of the first metatarsal (Austin-chevron osteotomies) for hallux valgus surgery. Namely, a 3.3-mm. diameter cortical screw made of poly-L-lactic acid. This screw was applied in 30 patients with an average age of 44 years (range: 20 to 61). A total of 35 osteotomies was performed. The study refers to the period between 1992 and 1994 with a mean follow-up of 18 months (range: 12 to 36 months). The results of the study demonstrate good stability of the synthesis, with normal union (mean: 4 weeks), no adverse tissue reactions or osteolytic phenomena were noted. One patient developed avascular necrosis of the metatarsal head, which in the opinion of the authors, was not due to the device implanted. Over 90% of the patients were satisfied with both the aesthetic and functional results. The authors conclude that the poly-L-lactic acid cortical screw is a promising bioabsorbable fixation device for this corrective osteotomy in selected patients less than 50 years old, with good first metatarsal bone stock.

Adult↗

PubMedDate not supplied

Resorbable poly-L-lactic acid mini-staples for the fixation of Akin osteotomies.

The authors present a new fixation system constituted by reabsorbable mini-staples in poly-L-lactic acid, the use of which is proposed for Akin osteotomies. An initial cohort of 25 cases (23 patients), with a mean follow-up of 16 months (minimum 6 months, maximum 30 months) is presented. In 24 cases union of the osteotomy was found within 30 days of the surgical treatment; however, in one case it took longer (12 weeks). Neither pseudoarthrosis, malunion, nor breakage of the mini-staples was found. No adverse tissue reactions were observed. In all cases good deformity correction was achieved, with patient satisfaction reported in about 96% of the cases. In this type of surgery and in selected cases (without osteoporosis and/or severe arthritis of the first metatarsophalangeal joint), this fixation device is an interesting alternative to the traditional nonabsorbable types.

Adult↗

PubMedDate not supplied

[Clear cell sarcoma of the hand. Description of a case].

Clear cell sarcoma of the hand. Case report. Histologic, ultrastructural and immunohistochemical features of a case of clear cell sarcoma (also called malignant melanoma of soft parts) arisen in the index finger of the right hand in a 28 year-old-woman are described in this report. Typical forms of this tumor are deeply located and associated with tendons and aponeuroses, lacking cutaneous involvement. The tumor has to be differentiated from other benign and malignant lesions of the soft parts, such as a giant cell tumor of tendon sheaths and a fibrosarcoma. The demonstration of melanin and a positive immunohistochemical reaction for S-100 protein and HMB-45 (a melanin-associated antigen) can assist in the differential diagnosis. In spite of a slow and protracted clinical course, many of the patients experience multiple local recurrences and distant metastases. Prognosis is poor in a high percentage of cases.

Adult↗