Bartonella henselae osteoarthritis of the upper cervical spine in a 14-year-old boy.

We report a case of Bartonella henselae, an agent of cat scratch disease, C1-C2 osteoarthritis with osteolysis of the lateral mass of C2 in a 14-year-old boy. Oral antibiotics did not successfully treat the infection and surgery was necessary to treat the septic arthritis. The case opens discussion about bacterial osteoarthritis of the cervical spine and bone involvement in disseminated bartonellosis.

Solid aneurysmal bone cyst on the cervical spine of a young child.

INTRODUCTION: Solid aneurysmal bone cyst (S-ABC) is a variant of aneurysmal bone cyst (ABC), an uncommon benign bone tumor. There are few cases described in the cervical spine in kids up today. We treated a recurrent case with neurological involvement that needed multiple surgical procedures and radiotherapy. CASE PRESENTATION: We report a case of C4 located S-ABC concerning a 2-year-old boy treated surgically by anterior and posterior approach. Three months after the initial procedure appearance of a tetraparesis led to diagnose a local recurrence treated by sclerotherapy and a second surgery. The patient had a full neurological recovery. Three months later, a follow-up CT scan showed a second recurrence requiring a new surgical revision by anterior approach and radiotherapy. OUTCOME: At 6-year follow-up after four surgical procedures, sclerotherapy and radiotherapy, the aneurysmal bone cyst has been healed. Patient had neurological impairment after a local recurrence but had full recovered after final revision surgery.

PIP joint volar rotatory dislocation: An anatomical study to explore extensor system lesions and the Stener effect.

Volar rotatory dislocation of the proximal interphalangeal joint results from volar rotation of the condyle around an intact opposite collateral ligament. A cadaveric study was preformed to better understand the mechanisms of this injury. Thirty-two long fingers (II to V) were studied. After partial section of the triangular ligament, the radial collateral ligament was cut (partly or completely, at proximal or distal insertion) and volar rotatory dislocation was induced. We studied the incidence of a fixed dislocation, the distal extension of the triangular ligament lesion, and the Stener lesion of the radial collateral ligament. A buttonhole lesion was produced by a dislocated lateral band in all cases with complete section of the collateral ligament. When the lesion of the triangular ligament extended distally, dislocation became irreducible. A Stener effect (interposition of the lateral band between the condyle and the collateral ligament) was observed after reduction in 21% of cases with proximal lesions of the radial collateral ligament.

[Fingertip injuries in children]. / Les traumatismes distaux des doigts chez l'enfant.

Traumatisms of distal extremities are frequent in children. They can associate fingertip skin, bone and nail complex injuries. Their severity level is very variable, from simple subungual bruise to distal amputation. Initial care needs careful repair of injured structures. Secondary treatment of sequelae is much more difficult.