Dorsal and palmar material properties of the adult human flexor profundus tendon in Zone II.
Nineteen fresh frozen adult human flexor digitorum profundus (FDP) tendons in Zone II were studied to compare the differences in material properties between the dorsal (dFDP) and palmar (pFDP) side of each tendon biomechanically, biochemically and histologically. We have found that tissue from the dorsal side of each flexor tendon has (1) greater strength; (2) less collagen crosslinking (hydroxypyridinium); and (3) a larger single bundle cross-sectional area than tissue from the palmar side of the same tendon. These data clearly demonstrate that the dorsal and palmar sides of the adult human (FDP) tendon in Zone II differ materially. These differences suggest that there may be biomechanical advantages in placing core sutures dorsally when repairing flexor tendons, a technique that we have previously described.
Soejima
Osamu
O
Hand Surgery Service, Department of Orthopaedic Surgery, Fukuoka University School of Medicine, Fukuoka, Japan. osoejima@cis.fukuoka-u.ac.jp
Diao
Edward
E
Lotz
Jeffrey C
JC
Hariharan
Jayaram S
JS
Naito
Masatoshi
M
D000328:Adult; D001696:Biomechanical Phenomena; D003094:Collagen / Q000032:analysis*; D005384:Finger Joint / Q000473:pathology; D006801:Humans; D011726:Pyridinium Compounds / Q000032:analysis; D013314:Stress, Mechanical; D013710:Tendons / Q000737:chemistry / Q000473:pathology* / Q000502:physiology; D013718:Tensile Strength
D011726:Pyridinium Compounds; D003094:Collagen