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HSS Research Institute

A1 and A2 pulley release for the treatment of MCP hyperextension in Cerebral Palsy

IRB Number: 29048
(inactive trial)

Institutional Review Board, Hospital for Special Surgery

November 20, 2009

The safety of study participants is our top priority. The trial is approved and periodically reviewed by an Institutional Review Board (IRB), which includes doctors, administrators, ethicists, and members of the general public. The safety of clinical trials is reviewed by the U.S. Food and Drug Administration.

Before enrolling in a clinical trial, the investigator will explain the purpose of the trial, its expected benefits, any possible risks or side effects, and what your role will be. This is the time to ask questions! If you want to join the trial, you must sign the informed consent documents. You can leave a clinical trial at any time without penalty.

For further information, see Understanding Clinical Trials.

Principal Investigator

Michelle G. Carlson, MD


Krystle A. Hearns, MA
Michelle E. Patterson, MS., OTR/L


As subject population will be determined via retrospective chart review, we are not actively recruiting subjects.

Data will be collected by the co-investigators through a retrospective chart review
of all patients who have undergone an A1 or A2 pulley release surgical procedure
performed by the primary investigator and who present with a diagnosis of
Cerebral Palsy.  Pre and post-operative active and passive flexion and extension of the MP and PIP joints will be compared, as well as pre and post-operative Jebsen-Taylor Hand Function scores, and joint position during activity.

Inclusion/Exclusion Criteria

N/A – we are not actively recruiting subjects.

Contact Information

Krystle Hearns MA, Co-Director of Research, CHArm Center