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Prevention of Post Operative Bone Loss in Children

Information source: University of New Mexico
Information obtained from ClinicalTrials.gov on December 08, 2011
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Osteoporosis; Cerebral Palsy; Spina Bifida; Osteopenia; Osteogenesis Imperfecta

Intervention: pamidronate (Drug); saline (Other)

Phase: N/A

Status: Recruiting

Sponsored by: University of New Mexico

Official(s) and/or principal investigator(s):
Elizabeth A Szalay, MD, Principal Investigator, Affiliation: University of New Mexico Carrie Tingley Hospital

Overall contact:
Elizabeth A Szalay, MD, Phone: 505 272-5214, Email: ESzalay@salud.unm.edu


Hypothesis: one-dose pamidronate will prevent post-operative bone loss in children at risk for low bone density

Plan: children with chronic disease such as CP, spina bifida, etc. will be recruited pre operatively and studied with DXA scan. After surgery, children will be randomized to receive either pamidronate or saline. Repeat DXA scan will determine bone lost after end of immobilization or nonweightbearing.

Clinical Details

Official title: Prevention of Post Operative Bone Loss in Children

Study design: Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Prevention

Primary outcome: Amount of bone density lost (%) from pre-to post-operative DXA scan

Secondary outcome: Post operative fractures of lower extremity

Detailed description: Children at risk for post operative bone loss will be studied with preoperative DXA scan of spine and distal femora

Preoperative screening with standard labs electrolytes, Ca++, PO4, creatinine, Vit D

Following surgery of hip(s) or lower extremities, randomization into treatment with low dose IV pamidronate (one dose) v placebo group

Repeat DXA scan after end of immobilization or non-weightbearing


Minimum age: 4 Years. Maximum age: 18 Years. Gender(s): Both.


Inclusion Criteria:

- chronic condition predisposing to low bone density, such as cerebral palsy,

osteogenesis imperfecta

- lower extremity surgery proposed that will require post op nonweightbearing, casted

or not, for a minimum of 4 weeks

Exclusion Criteria:

- creatinine >1. 2

- prior bisphosphonate exposure

- orthopaedic implants in distal femoral precluding DXA scan

- inability to cooperate with DXA scan

Locations and Contacts

Elizabeth A Szalay, MD, Phone: 505 272-5214, Email: ESzalay@salud.unm.edu

University of New Mexico Carrie Tingley Hospital, Albuquerque, New Mexico 87102, United States; Recruiting
Additional Information

Starting date: September 2007
Last updated: April 28, 2009

Page last updated: December 08, 2011

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