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Biomedical subjects

G J Sammarco

Publications and source records attributed to G J Sammarco.

14 recordsLinked to original sources
PubMed1992

Silicone lymphadenopathy associated with failed prosthesis of the hallux: a case report and literature review.

Three years after replacement of a first metatarsophalangeal joint with a silicone prosthesis, a tennis player developed an enlarged ipsilateral femoral lymph node. The implant was also noted to have failed. Fine needle aspiration of the node revealed a foreign body giant cell reaction to particulates morphologically compatible with silicone elastomer. This finding suggests the potential utility of fine needle aspiration in the evaluation of patient response to foreign materials used in prosthetic devices. The lymphadenopathy also suggests that prosthetic metatarsophalangeal replacement in patients with high demand activities run the risk not only of failure of the prosthesis, but also of central migration of the particulate debris resulting from silicone elastomers.

Female↗
PubMed1989

Chronic peroneus brevis tendon lesions.

Changes can occur in the peroneus brevis tendon following ankle injuries or sprains. A series of 14 tendon lesions is reported in the ankles of 13 patients. The duration of symptoms ranged from 8 months to 20 years. The predominant symptom in 12 ankles was lateral pain. In 11 ankles, lateral ankle instability was treated by a reconstruction with the split peroneus brevis graft, and in one ankle, by direct repair. The defects were found during harvest of the graft. One patient had previous fractures with bony impingement and one had a chronic tear of the tibialis posterior tendon with pes planus. All lesions were located in the segment of the tendon at or distal to the lateral malleolus. The lesions were 2 to 5 cm in length, single or multiple, and with a grossly degenerative appearance. No avulsions or anomalies of the tendon were found. In 11 patients, the defect in the peroneus brevis was incorporated into the portion of the tendon in ankle ligament reconstruction for use as a graft; in 2 cases it was repaired directly. On follow-up of eight months to four and one half years, twelve ankles had significant improvement in pain and function.

Adolescent↗
PubMed1989

Metatarsal osteotomy using a double-threaded compression screw: an adjunct to revision forefoot surgery.

A double-threaded compression screw (Herbert) was used as internal fixation of metatarsal neck osteotomy and nonunion repair in 16 patients (18 feet). Fifteen patients had associated symptomatic conditions of the foot. Twelve patients had one or more previous surgical procedures on the involved foot. Fourteen patients (15 feet) underwent 20 primary or revision lesser metatarsal osteotomies. Four of these patients had undergone previous lesser metatarsal osteotomies and had developed recurrent pain beneath six metatarsals and transfer metatarsalgia in one case. The remaining two patients (three feet), with six nonunions from previous metatarsal osteotomies, had repair with screw fixation and bone grafting. Follow-up for the series averaged 14 months.

Adult↗
PubMedDate not supplied

Surgical treatment of lateral ankle instability syndrome.

Lateral ankle instability syndrome is defined by pain and instability caused by ligament laxity. Anterior talofibular ligament laxity, with or without calcaneofibular laxity and other abnormalities, is often present in conjunction with peroneus brevis tendon tears, abnormal ligament placement, tibialis posterior tendon tears, osteochondritis dissecans, arthritis, synovitis, loose bodies, and tarsal coalition. Surgical reconstructions were performed on 43 ankles using a split peroneus brevis tendon graft routed through osseous tunnels in the talus, fibula, and calcaneus and resutured to the reconstructed anterior talofibular and calcaneofibular ligaments. The tunnel locations, transfer routes, and tendon reinforcement were modifications based on the Elmslie procedure. Good and excellent results were achieved in 91% of the patients. Ninety-eight percent of the patients achieved stability. Followup was from 9 months to 11 years. Twenty-one patients had preoperative and intraoperative findings that required additional procedures. Thorough evaluation of patients with lateral ankle instability syndrome increases the frequency of finding associated abnormalities, which if left uncorrected, may adversely affect the outcome of surgery.

Accidental Falls↗
PubMedDate not supplied

Neurapraxia of the femoral nerve in a modern dancer.

We have presented a case of an acute onset femoral nerve neurapraxia in a pure modern dancer. Repeated mild stretching of the femoral nerve during an established dance routine over a period of several months is implicated as the etiology. The thigh muscles quickly weakened, but regained strength within 3 months. Electromyographic evidence of specific femoral nerve injury initially was negative, but was evident 6 weeks following injury. Overuse syndrome in dancers can cause rapid loss of strength. Other conditions such as herniated intervertebral disc, acute hemorrhage, trauma, iliopsoas rupture, and acute stretching must be ruled out. Complete recovery was the natural outcome.

Athletic Injuries↗
PubMedDate not supplied

The stabilizing role of the lateral ligament complex around the ankle and subtalar joints.

The stabilizing role of various ligaments in the lateral side of the ankle and hindfoot was examined experimentally and sequentially using 10 fresh amputated lower limbs. The anterior talofibular ligament contributed to ankle stability in plantarflexion and the calcaneofibular, the fibulotalocalcaneal, and posterior talofibular ligament in all positions. The lateral root of the inferior extensor retinaculum contributed to subtalar stability in neutral and dorsiflexion. The calcaneofibular, fibulotalocalcaneal, and cervical ligaments and the ligament of the anterior capsule of the posterior talocalcaneal joint and the interosseous ligaments contributed to subtalar stability in all positions. The subtalar joint accounted for upward of 50% of ankle/hindfoot inversion after ligament division in the intermalleolar plane.

Aged↗
PubMedDate not supplied

Fine needle aspiration cytology of silicone lymphadenopathy in a patient with an artificial joint. A case report.

Three years after replacement of the left first metatarsophalangeal joint with a silicone prosthesis, a patient noted enlargement of a left femoral lymph node. Fine needle aspiration of the node revealed a foreign body giant cell reaction to particulates morphologically compatible with silicone elastomer. This finding suggests the potential utility of fine needle aspiration in the evaluation of patients' responses to a variety of foreign materials used in prosthetic devices and as pharmaceuticals.

Biopsy, Needle↗