Insertional anatomy and clinical relevance of the distal biceps tendon.
Summary of "Insertional anatomy and clinical relevance of the distal biceps tendon."
PURPOSE:
This study was undertaken to evaluate the incidence of bifurcated distal biceps tendons and the tendon's insertional footprint on the radial tuberosity.
METHODS:
Twenty-five embalmed cadaveric specimens were dissected. The relationships and orientation of the muscle bellies and distal biceps tendon were examined. The insertional length, width, and footprint area of the distal biceps tendon on the radial tuberosity were evaluated.
RESULTS:
In 12 specimens (48%), the distal biceps tendon was in 2 distinct, easily separated parts. The average footprint length, width, and area of the tendon's insertion on the radial tuberosity were 20.5 mm ± 2.0 mm, 9.7 mm ± 1.3 mm, and 156.3 mm(2) ± 29.4 mm(2), respectively. We calculated that the tendon's insertion occupied approximately 35.9% of the area of the radial tuberosity. In the specimens with a bifurcated distal biceps tendon, the long head of the tendon inserted at the posterosuperior portion of the radial tuberosity, and the average area was 71.4 mm(2) ± 11.3 mm(2). The short head of the distal biceps tendon inserted at the anteroinferior portion, and the average area was 88.3 mm(2) ± 24.1 mm(2).
CONCLUSION:
This study confirmed that bifurcated distal biceps tendon insertion is not a rare anatomical variation, showed by recent investigations, and found that the short head of the distal biceps tendon was inserted more anteriorly than the long head on the radial tuberosity. These findings may allow functional independence and isolated rupture of each portion. It can make correct diagnosis possible and allow for a more anatomical orientation of the tendon during surgical repair.
Affiliation
Department of Orthopedic Surgery, Dongsan Medical Center, School of Medicine, Keimyung University, 194 Dongsan-dong, Joong-gu, Daegu, 700-712, Korea, oscho5362@dsmc.or.kr.
Journal Details
This article was published in the following journal.
Name: Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA
ISSN: 1433-7347
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21698491
- DOI: http://dx.doi.org/10.1007/s00167-011-1586-x
Medical and Biotech [MESH] Definitions
Tenosynovitis
Inflammation of the synovial lining of a tendon sheath. Causes include trauma, tendon stress, bacterial disease (gonorrhea, tuberculosis), rheumatic disease, and gout. Common sites are the hand, wrist, shoulder capsule, hip capsule, hamstring muscles, and Achilles tendon. The tendon sheaths become inflamed and painful, and accumulate fluid. Joint mobility is usually reduced.
Tendon Transfer
Surgical procedure by which a tendon is incised at its insertion and placed at an anatomical site distant from the original insertion. The tendon remains attached at the point of origin and takes over the function of a muscle inactivated by trauma or disease.
Patellar Ligament
A band of fibrous tissue that attaches the apex of the PATELLA to the lower part of the tubercle of the TIBIA. The ligament is actually the caudal continuation of the common tendon of the QUADRICEPS FEMORIS. The patella is embedded in that tendon. As such, the patellar ligament can be thought of as connecting the quadriceps femoris tendon to the tibia, and therefore it is sometimes called the patellar tendon.
Anatomy, Cross-sectional
Descriptive anatomy based on three-dimensional imaging (IMAGING, THREE-DIMENSIONAL) of the body, organs, and structures using a series of computer multiplane sections, displayed by transverse, coronal, and sagittal analyses. It is essential to accurate interpretation by the radiologist of such techniques as ultrasonic diagnosis, MAGNETIC RESONANCE IMAGING, and computed tomography (TOMOGRAPHY, X-RAY COMPUTED). (From Lane & Sharfaei, Modern Sectional Anatomy, 1992, Preface)
Tendon Entrapment
Narrowing or stenosis of a tendon's retinacular sheath. It occurs most often in the hand or wrist but can also be found in the foot or ankle. The most common types are DE QUERVAIN DISEASE and TRIGGER FINGER DISORDER.
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