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[Metastyloid, parastyloid and secondary pisiform bones]
1Abteilung Anatomie, Medizinischen Fakultät der RWTH, Aachen.
Gegenbaurs Morphologisches Jahrbuch
|January 1, 1988
Summary
This study details three rare instances of accessory carpal bones, including a unique combination of metastyloid and parastyloid bones. These findings contribute to understanding rare carpal bone variations in human anatomy.
Area of Science:
- Orthopedic Surgery
- Human Anatomy
- Radiology
Background:
- Accessory carpal ossicles are rare anatomical variations.
- Understanding these variations is crucial for accurate diagnosis and treatment in hand surgery.
- Literature review reveals limited documented cases of complex accessory ossicles.
Observation:
- Three rare cases of accessory osseous carpal elements were identified.
- Case 1: A well-developed metastyloid bone co-occurring with a parastyloid bone.
- Case 2: A regressive metastyloid bone.
- Case 3: A pisiforme secundarium in the contralateral hand.
Findings:
- The co-occurrence of metastyloid and parastyloid bones represents a particularly rare presentation.
- The described regressive metastyloid bone and pisiforme secundarium add to the spectrum of known carpal anomalies.
- Comparison with existing literature highlights the uniqueness of the observed cases.
Implications:
- These cases expand the known variations of carpal bone development.
- Accurate identification of such anomalies is vital for avoiding misdiagnosis in orthopedic and radiological assessments.
- Further research into the embryological origins of these rare ossicles is warranted.