Magnetic resonance imaging of osteonecrosis and osteoarthrosis in exercising quadriplegics and paraplegics

Mark S Nash, J. Tehranzadeh, Barth A Green, M. T. Rountree, J. D. Shea

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Degenerative bone and joint diseases that commonly accompany spinal cord injury (SCI) may be exacerbated by physical activity of the lower extremities. To determine if orthopaedic stress imposed by electrically stimulated cycling exercise is associated with osteonecrosis or osteoarthrosis in persons with chronic SCI, ten quadriplegics and paraplegics who had each undergone electrical stimulation cycle ergometry exercise two or three times weekly for longer than 1.5 years underwent magnetic resonance examinations of the femoral heads and the dominant knee. Three of the ten subjects had no evidence of meniscal or bone marrow pathologies, osteochondritis dessicans, avascular necrosis, joint effusion or accumulation or soft tissue tears. The magnetic resonance scans of six subjects were noted to have very mild effusion, slight meniscal degeneration and minimal chondromalacia patellae. Consistent patterns of bone or joint pathology were not discernible among these scans, and the positive findings did not represent threatening clinical states. The scans of one subject showed heterogenous regions of bone infarct characteristic of osteochondritis and avascular necrosis, observations that were atypical of all other subjects. No injuries consistent with the biomechanics of cycling exercise were observed in any subject. Despite the high sensitivity of magnetic resonance imaging in detecting bone and joint deterioration, significant bone and joint findings represented only 14 of 150 observations, less than previously reported in sedentary subjects with SCI. This study suggests that electrical stimulation cycle ergometry does not foster bone or joint deterioration in individuals with chronic SCI.

Original languageEnglish
Pages (from-to)184-192
Number of pages9
JournalAmerican Journal of Physical Medicine and Rehabilitation
Volume73
Issue number3
DOIs
StatePublished - Jul 6 1994

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Osteonecrosis
Osteoarthritis
Spinal Cord Injuries
Joints
Magnetic Resonance Imaging
Bone and Bones
Osteochondritis
Ergometry
Electric Stimulation
Necrosis
Magnetic Resonance Spectroscopy
Chondromalacia Patellae
Pathology
Bone Diseases
Thigh
Biomechanical Phenomena
Orthopedics
Lower Extremity
Knee
Bone Marrow

ASJC Scopus subject areas

  • Rehabilitation
  • Health Professions(all)
  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Magnetic resonance imaging of osteonecrosis and osteoarthrosis in exercising quadriplegics and paraplegics. / Nash, Mark S; Tehranzadeh, J.; Green, Barth A; Rountree, M. T.; Shea, J. D.

In: American Journal of Physical Medicine and Rehabilitation, Vol. 73, No. 3, 06.07.1994, p. 184-192.

Research output: Contribution to journalArticle

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