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Anomalous biceps tendon insertion into the rotator cable: a case report.
Jason E Lang1, Emily N Vinson, Carl J Basamania
1Division of Orthopaedic Surgery, 91 Parker Hill Avenue, Boston, MA 02120, USA. jelang1@gmail.com
A rare anomalous origin of the long head of the biceps tendon (LHBT) from the rotator cable was identified during arthroscopy. This finding, previously undescribed, offers new insights into aberrant LHBT anatomy.
Area of Science:
- Orthopaedic Surgery
- Human Anatomy
- Sports Medicine
Background:
- The long head of the biceps tendon (LHBT) typically originates from the supraglenoid tubercle.
- Aberrant anatomical variations of the LHBT origin are uncommon but can impact shoulder function.
- Understanding the rotator cable and crescent anatomy is crucial for diagnosing and treating shoulder pathologies.
Observation:
- An incidental intraoperative finding during diagnostic arthroscopy revealed an anomalous origin of the LHBT.
- The aberrant LHBT originated directly from the rotator cable, a structure not previously associated with LHBT origin.
- This observation was made during a routine shoulder arthroscopy procedure.
Findings:
- This case report details the first documented instance of the long head of the biceps tendon originating from the rotator cable.
- The study discusses the anatomical implications of this aberrant origin in relation to the rotator cable and crescent.
- A comprehensive literature review on known variations in LHBT origin is presented.
Implications:
- This finding expands the known spectrum of anatomical variations for the long head of the biceps tendon.
- It may necessitate a re-evaluation of surgical approaches and diagnostic criteria for certain shoulder conditions.
- Further research is warranted to understand the clinical significance and biomechanical effects of this anomalous tendon origin.
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