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Biomedical subjects

H Aprin

Publications and source records attributed to H Aprin.

At least 19 recordsLinked to original sources
PubMed1997

Periosteal chondrosarcoma: a case report and review of the literature.

Periosteal chondrosarcoma occurs predominantly in the long tubular bones. The long-term survival rate is better and there are fewer local recurrences than with central chondrosarcoma. A case of periosteal chondrosarcoma is reported with a review of the literature. A 13-year-old girl presented with swelling of the distal right thigh of 3 weeks' duration. Radiographs and computed tomographic scan of the lesion showed a soft tissue mass, measuring 6 x 6 cm, with matrix calcification arising from the surface of the bone. An open biopsy followed by en bloc resection of the tumor was performed. The histologic features were those of a chondrosarcoma. An 8-year follow-up period has shown no local recurrence or distant metastases. The differential diagnosis of periosteal chondrosarcoma includes periosteal (chondroblastic) osteosarcoma and periosteal chondroma. Controversy exists as to whether periosteal chondrosarcoma is an entity distinct from periosteal osteosarcoma. The clinicopathologic features in this case and in the cases reported in the literature support the contention that periosteal chondrosarcoma is indeed distinct.

Adolescent↗
PubMed1994

Femoral lengthening by callus distraction and cortical apposition (Z-osteotomy).

Nine patients underwent femoral lengthening by callus distraction with cortical apposition (Z-osteotomy). The average amount of lengthening was 4.8 cm (range, 2.9-6.0 cm). The average time of external fixator use was 70 days (range, 33-100 days). The average time for using the cast brace was 3.5 months. All patients had complete union. No patient required bone grafting. No patient had premature consolidation of the osteotomy. Complications included cellulitis around the pins in 2 patients, transient peroneal nerve palsy in 1 patient, and fracture after removal of external fixator in 2 patients. In this procedure the alignment and rotation is controlled by a strong external fixating device. The large area of cortical contact after z-osteotomy assists in rapid union of the distracted bone.

Adolescent↗
PubMed1993

Pyogenic sacroiliitis in children.

Clinical findings, roentgenograms, computed axial tomography (CT scan), radionuclide studies, and management are reviewed in seven children with pyogenic sacroiliitis (PS). High suspicion and complete examination of the pelvis and sacroiliac (SI) joint, including flexion, abduction, external rotation, and extension (FABERE) test, are essential for diagnosis. Although initial roentgenograms may be negative, CT scan will show changes indicating involvement of the SI joint. Sequential technetium and gallium scans are valuable in localizing PS. Blood cultures and direct aspiration of the SI joint will identify the infecting organism. Patients are initially treated with intravenous antibiotics. Surgical treatment is reserved for patients with advanced stage of PS.

Adolescent↗
PubMed1992

Foreign-body osteitis of the metacarpal bone.

Foreign-body granulomas in the hand can appear secondary to an unrecognized foreign material. In a six-year-old boy, an extensive sterile osteitis of the second metacarpal bone appeared adjacent to a wood splinter.

Child↗
PubMed1988

Stabilization of atlantoaxial instability.

Eight patients with atlantoaxial instability were treated by arthrodesis of the first and second cervical spine. Internal fixation was achieved by passing two 18 gauge stainless steel wires beneath the posterior arch of the atlas and around a threaded Steinmann pin which was drilled through the base of the spinous process of the axis. The wires were tightened over a preshaped iliac bone graft. A solid fusion was achieved in all patients. The risk of compression of the cord is decreased with this technique because the wires are not passed under the lamina of the axis. The lateral placement of the wires provides an excellent internal fixation and control of the forward flexion and rotation.

Adolescent↗
PubMed1987

Traumatic venous aneurysm. Case report.

A traumatic venous aneurysm within the greater saphenous vein occurred in a 15-year-old hockey player. The patient had early diagnosis and surgical excision of the lesion. Venous aneurysm is a rare clinical entity and a pathologic curiosity in the absence of varicose veins. It can lead to serious complications, such as pulmonary embolism, portal hypertension, and rupture. Early diagnosis with the use of venography and surgical excision of the lesion can prevent major complications.

Adolescent↗
PubMed1985

Early diagnosis of acute rupture of the quadriceps tendon by arthrography.

Arthrographic study of the knee was performed in six patients for diagnosis of acute rupture of the quadriceps tendon. All of the patients gave a history of attempting to recover from a fall. Pain and tenderness over the suprapatellar area were common findings in all patients. Four patients had a positive arthrogram demonstrating extravasation of the radiopaque material outside the knee along the quadriceps tendon. Of these four patients, two had complete loss of quadriceps function, but the other two were able to partially extend the knee when the gravity was eliminated. Two patients had negative arthrograms; both had loss of active extension of the knee against gravity but were able to extend the knee when the gravity was eliminated. All four patients with a positive arthrogram had rupture of the quadriceps tendon, which was demonstrated at the time of surgery. In one patient with a negative arthrogram, exploration of the knee revealed an intact extensor mechanism. Arthrography of the knee is an aid to the diagnosis of rupture of the quadriceps tendon and when indicated can be performed in the emergency room.

Adolescent↗
PubMed1984

Juvenile nodular aponeurotic fibroma in the area of the knee joint.

A case of calcifying aponeurotic fibroma of the knee occurred in a 14-year-old boy. Review of the literature reveals that calcifying aponeurotic fibroma is an uncommon benign tumor with a tendency for local recurrence. It is manifested by a progressively growing mass involving fat, fascia, and aponeurosis. Chondroid tissue and calcification within the areas of proliferated spindle cells are the characteristic features of this lesion and differentiate it from the other forms of fibromatosis.

Adolescent↗
PubMed1984

Arthrography (plica views). A noninvasive method for diagnosis and prognosis of plica syndrome.

In 45 patients with chronic knee problems arthrograms of the knee were obtained with emphasis on plica views. Thirty arthrograms showed radiographic evidence of plica syndrome. Three patients had thin bands in the proximal part of the suprapatellar pouch. Four patients had infrapatellar plicae. Eighteen patients had suprapatellar plicae, and five had mediopatellar plicae. The cross-table lateral view of the knee in different degrees of flexion is a valuable prognostic method. Five patients with suprapatellar plicae demonstrated excursion of the thick fibrotic band over the anteromedial femoral condyle during arthrography with the knee in different degrees of flexion. These patients did not respond to conservative treatment and required surgical excision of the plicae. Cross-table anteroposterior and tangential views with the medial side of the knee facing upward demonstrate impingement of the medial femoral condyle or the medial facet joint of the patella by the fibrotic mediopatellar plica. All patients (5 of 5) with mediopatellar plicae required surgical excision of the plicae.

Adolescent↗
PubMed1984

Tumoral calcinosis. Report of a case in a one-year-old child.

Tumoral calcinosis is a rare disease known as a progressively growing mass of calcific deposit at a periarticular area. The youngest reported case was the occurrence of the disease in a three-year-old child. This report describes tumoral calcinosis in the area of the knee in a one-year-old child and presents a brief review of the literature. As is usually the case, the blood chemistry was normal in the patient.

Calcinosis↗
PubMed1982

Dislocation of the hip in trisomy 21.

Almost one child in twenty with trisomy 21 will develop spontaneous dislocation of the hip between learning to walk and the age of 10 years. After the age of two years spontaneous habitual dislocation may occur. If left untreated, acute dislocation, subluxation and fixed dislocation follow in sequence. The natural history of the condition is described and the clinical and radiological features of 45 dislocations in 28 patients are presented. Nineteen had received no treatment. The most effective treatment was found to be pelvic or femoral osteotomy, combined with capsular plication, carried out in the phase of habitual dislocation. Once subluxation or fixed dislocation was present, the results of operation were poor and it is not recommended. All patients, even if left untreated, remain mobile. Pain is not a prominent feature.

Adolescent↗
PubMed1982

Chondrosarcoma in children and adolescents.

Chondrosarcoma is rare in children. Only 12 patients with a diagnosis of chondrosarcoma were treated at Children's Hospital Medical Center in Boston during the period from 1957 to 1980. Pediatric chondrosarcoma has a relatively rapid onset, manifested by pain, a palpable mass and neurological symptoms with the lesion localized in the spinal column. The pelvis was the most frequent location. Ten patients had primary and two patients had secondary chondrosarcoma. Of the latter two, one developed chondrosarcoma in a preexisting osteochondroma and the other had irradiation for neuroblastoma. The poorest outcomes were in patients who had involvement of the pelvic girdle and spinal column. Grade 2 and 3 lesions had the worst prognoses with metastases occurring within 12 months. Eight patients died at the time of study, and the longest survival time was 80 months. If surgically feasible, the treatment is radical excision. Radiation therapy and chemotherapy should be reserved for recurrences or distant metastasis.

Adolescent↗
PubMed1980

Treatment of trochanteric fractures with Ender rods.

The technical aspects of Ender's method in the treatment of trochanteric fractures are described. Problems and complications encountered with this method and their prevention and treatment are discussed. Intraoperative and postoperative problems are subdivided into those in the hip area and around the knee joint, such as: varus deformity, protrusion of the rod medially or laterally or into the hip joint, cracking the distal femur, incorrectly placing the window on the anteromedial side of the femoral condyle, backing out of the rods, and supracondylar fractures.

Adult↗
PubMed1979

Extension contracture of the knees in patients with meningomyelocele.

In 4 patients with meningomyelocele and extension contracture of the knee (7 knees), a surgical operation is described to release the extension contracture and provide better sitting position with the knees flexed. This decreases the chance of fracture by reducing the lever arm of the lower extremity.

Child↗