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Biomedical subjects

H H Bohlman

Publications and source records attributed to H H Bohlman.

84 records · Page 5Linked to original sources
PubMed1982

Vertebral osteomyelitis in infants.

Four infants between 2 and 13 weeks of age developed vertebral osteomyelitis. Their symptoms were different from those of children with discitis in that our patients were systemically ill, there was almost complete dissolution of involved vertebral bodies with either normal or nearly normal adjacent vertebral endplates, and three of the four children had recurrence of infection. The importance of long-term antibiotic treatment is emphasised. Years later the radiographic appearance of these children can be identical to congenital kyphosis with either anterior failure of segmentation or posterior hemivertebrae. The treatment should be the same as for congenital kyphosis with early bracing in extension and early fusion for progressive kyphosis.

Adolescent↗
PubMed1980

Comparison of fixation of spinal fractures.

Mechanical failure was induced in cadaver spines by applying flexion, extension, and lateral bending loads with continuous recordings of moment and rotation. Each spine was then stabilized with Harrington distraction rods, compression rods, and titanium mesh in sequence, and tested in a similar manner. The spines stabilized with mesh appeared stronger but less stiff than spines stabilized with Harrington rods.

Adult↗
PubMed1979

Acute fractures and dislocations of the cervical spine. An analysis of three hundred hospitalized patients and review of the literature.

Of 300 patients who were hospitalized for acute cervical injuries, 216 lived, fifty-one died within four months of injury, and thirty-three were lost to follow-up. The important findings in a retrospective review were that laminectomy resulted in a high mortality rate and loss of motor function and that steroids did not improve neural recovery in quadriplegics and their use was associated with gastrointestinal hemorrhage. Closed or open reduction followed by posterior fusion for subluxations or dislocations, and anterior decompression and fusion for vertebral compression fractures, offered the best chance for recovery of neural function and restoration of stability. Massive epidural hemorrhage was found only in patients with ankylosing spondylitis.

Adolescent↗
PubMedDate not supplied

Posterior methylmethacrylate fixation for cervical trauma.

Five cases of cervical instability after trauma were reviewed after being treated at other hospitals with posterior methylmethacrylate fixation. Three cases developed infections, and reduction was lost postoperatively in two other cases. A total of four re-operations was required. The disadvantages of this technique of treatment of post-traumatic cervical instability are emphasized.

Adult↗
PubMedDate not supplied

Spinal cord monitoring of experimental incomplete cervical spinal cord injury: a preliminary report.

Incomplete spinal cord injuries occur as a result of contusion and mechanical compression of neural tissue. Anterior spinal cord compression may physiologically prevent optimal recovery of spinal cord function for varying periods of time. The aim of this research was to study an animal model of incomplete cervical cord injury with a spinal cord monitoring system utilizing computer-averaged cortical evoked potentials. Two animal models were utilized: a contusion injury by the weight drop method and an anterior cord compression injury. Results indicate that incomplete cord injuries of both types will recover depending upon the amount of initial force or energy applied and the length of time compression is applied. Thirteen compression and 14 contusion injuries were studied. Cortical evoked potentials measured in seventeen dogs paralleled the degree of cord injury as well as recovery.

Animals↗
PubMedDate not supplied

Demonstration of diastematomyelia and associated abnormalities with MR imaging.

Three patients were studied with a 0.3 T superconducting magnet to assess the role of magnetic resonance (MR) imaging in the recognition and evaluation of diastematomyelia and associated abnormalities. Comparison was made with other imaging techniques, including metrizamide computed tomographic (CT) myelography. With MR imaging, the divided spinal cord was well imaged in its entire craniocaudal extent, comparable to CT myelography. The bony septum, when it contained a marrow cavity, was also seen well. In two patients, dural ectasia and low position of the spinal cord with and without associated lipoma were clearly imaged. MR imaging demonstrated associated syringohydromyelia in one patient that was not detected by other radiologic studies. This preliminary experience with MR imaging of diastematomyelia suggests that once the bony details of the abnormality are defined, MR imaging can delineate the presence and extent of the divided spinal cord as well as its associated abnormalities adequately, obviating other studies.

Adolescent↗
PubMedDate not supplied

Surgical techniques of anterior decompression and fusion for spinal cord injuries.

Many patients who have static or only slowly improving neurologic deficits and significant compression of the spinal cord and nerve roots can benefit from anterior decompression. The improvement ranges from partial root recovery to very dramatic improvement in upper as well as lower extremities in the patient with quadriparesis. Intrinsic damage or contusion of the spinal cord cannot be reversed by decompression. Patients with motor sparing preoperatively attain a better functional improvement than those patients who have only slight distal sensory function initially. The same can be said of patients with spinal cord injuries treated with surgery, but we believe the ultimate degree of functional recovery of incomplete cord injuries is greater following anterior than posterior decompression when the operation is indicated. An early accurate diagnosis must be made concerning whether a patient has a complete or an incomplete spinal cord injury. The mechanical compressive lesion must be well documented by myelography, laminography, or CAT scan. The patient should not be neurologically harmed by a posterior laminectomy approach to anterior pathology which additionally removes all posterior stability. An anterior compressive block is best removed through an anterior approach.

Cervical Vertebrae↗