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Updated: Mar 14, 2026

Modified Posterior Vertebral Column Resection for Patients with Thoracolumbar Kyphotic Deformity
Published on: September 16, 2022
An unusual cause of cervical kyphosis
Mamtha S Raj1, Joseph H Schwab1
1Department of Spine Orthopaedics, Massachusetts General Hospital, Yawkey 3A, 55 Fruit St., Boston, MA 02114, USA.
Background Context:
Acute fixed cervical kyphosis may be a rare presentation of conversion disorder, psychogenic dystonia, and potentially as a side effect from typical antipsychotic drugs. Haldol has been associated with acute dystonic reactions. In some cases, rigid deformities ensue. We are reporting a case of a fixed cervical kyphosis after the use of Haldol.
Purpose:
To present a case of a potential acute dystonic reaction temporally associated with Haldol ingestion leading to fixed cervical kyphosis.
Study Design:
This is a case report.
Methods:
A patient diagnosed with bipolar disorder presented to the emergency room several times with severe neck pain and stiffness. The neck appeared fixed in flexion with extensive osteophyte formation over a 3-month period.
Results:
The patient's condition was resolved by a posterior-anterior-posterior surgical approach. It corrected the patient's cervical curvature from 88° to 5°.
Conclusions:
Acute dystonic reactions have the potential to apply enough pressure on bone to cause rapid osteophyte formation.
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