Wascher D C, Grauer J D, Markoff K L
Biomechanics Research Section, UCLA Division of Orthopaedic Surgery.
Am J Sports Med. 1993 May-Jun;21(3):400-6. doi: 10.1177/036354659302100313.
The effects of biceps tendon tenodesis on internal-external and varus-valgus laxity were measured using fresh-frozen cadaveric specimens that had undergone sequential sectioning of the posterolateral structures and of the fibular collateral ligament. Tenodesis (using 89 N graft tension and a fixation point located 1 cm anterior to the fibular collateral ligament's insertion on the femur) was effective in restoring external rotation and varus laxity; the procedure actually overconstrained external tibial rotation at all flexion positions and varus angulation at 60 degrees and 90 degrees of flexion. Internal rotation and valgus laxity were unaffected by the tenodesis procedure. The anterior fixation point was more effective in reducing laxity than a fixation point located 1 cm proximal to the fibular collateral ligament insertion. Tenodesis using the proximal fixation point, which was nonisometric, did not restore external rotation and varus laxities to intact values at 60 degrees and 90 degrees of knee flexion. Graft tension (45 or 89 N) had no measurable effect on the results of the tenodesis. This study has demonstrated that the biceps tenodesis procedure is effective for reducing static laxity in the knee with posterolateral instability.
使用新鲜冷冻的尸体标本测量二头肌肌腱固定术对内外侧及内翻-外翻松弛度的影响，这些标本已先后切断后外侧结构和腓侧副韧带。固定术（采用89 N的移植物张力，固定点位于腓侧副韧带在股骨上的附着点前方1 cm处）在恢复外旋和内翻松弛度方面有效；该操作实际上在所有屈曲位置均过度限制了胫骨外旋，在60度和90度屈曲时过度限制了内翻成角。内旋和外翻松弛度不受固定术的影响。与位于腓侧副韧带附着点近端1 cm处的固定点相比，前方固定点在减少松弛度方面更有效。使用近端固定点的固定术是非等距的，在膝关节60度和90度屈曲时，未能将外旋和内翻松弛度恢复到完整值。移植物张力（45或89 N）对固定术的结果没有可测量的影响。本研究表明，二头肌固定术对于减少后外侧不稳定膝关节的静态松弛度是有效的。
