Marks R M, Parks B G, Schon L C
Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA.
Foot Ankle Int. 1998 Aug;19(8):507-10. doi: 10.1177/107110079801900801.
To test the hypothesis that a plate applied to the plantar (tension) side of the medial midfoot provides stronger fixation than midfoot fusion with screw fixation, we biomechanically compared the two constructs for midfoot fusion. We created a model of midfoot instability in eight matched pairs of cadaver legs by section of joint capsule, ligaments, and tendons about Lisfranc's joints, and then performed a load-to-failure study to compare the fixation provided by a plantarly applied third tubular plate with that by cortical screws. After an initial load deformation curve to 1000 N was obtained, specimens were cyclically loaded at 200 to 750 N for 3000 cycles and then loaded to failure (screw pullout, fracture, or deformation >3 mm). Comparing the plantar plate and midfoot fusion with screw fixation constructs, a plate applied to the plantar (tension) aspect of the medial midfoot provides a stronger, sturdier construct than does midfoot fusion with screw fixation.
为验证应用于中足内侧足底（张力）侧的钢板比螺钉固定的中足融合术提供更强固定力这一假设，我们对两种中足融合结构进行了生物力学比较。我们通过切断Lisfranc关节周围的关节囊、韧带和肌腱，在八对匹配的尸体下肢中创建了中足不稳定模型，然后进行了破坏载荷研究，以比较足底应用的第三管状钢板与皮质螺钉提供的固定力。在获得初始载荷至1000 N的变形曲线后，对标本进行200至750 N的循环加载3000次，然后加载至破坏（螺钉拔出、骨折或变形>3 mm）。比较足底钢板和螺钉固定的中足融合结构，应用于中足内侧足底（张力）面的钢板比螺钉固定的中足融合术提供更强、更坚固的结构。
