Ao M X, Li X M, Yu Y Y, Shi H J, Huang H S, Ao Y F, Wang W
Department of Ophthalmology, Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing 100191, China.
Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing 100191, China.
Beijing Da Xue Xue Bao Yi Xue Ban. 2021 Oct 18;53(5):907-914. doi: 10.19723/j.issn.1671-167X.2021.05.016.
To analyze the effects of visual restoration after cataract surgery on plantar pressure and biomechanics of foot in elder individuals.
Thirty-two patients [male/female 5/27, (70.1±5.2) years old] with age-related cataract were recruited between October 2016 and December 2019. The footscan system was employed to record the data of plantar pressure during level walking before and 1-month after the cataract surgery. Parameters of peak pressure (PP), impulse (I), pressure-time integral (PTI) and time to peak pressure (TPP) from the regions of the 1st toe (T1), 2nd to 5th toes (T2-5), 1st to 5th metatarsal heads (M1-M5), midfoot (MF), medial hindfoot (HM) and lateral hindfoot (HL) were analyzed respectively.
Post-operatively, the visual function was effectively reconstructed with improved visual acuity in both eyes (=-4.878, -4.801; < 0.001). The PP (=2.266, =0.031) and I (=2.152, =0.039) values in M2 region on the dominant side (right foot) increased statistically at post-operative phase, while the changes of pressure and temporal para-meters in other regions remained stable. There was laterality in plantar pressure at pre-operative phase, manifested as greater PP values in M1, M2, MF, and HM regions on the dominant sides (=-2.414, -2.478, -2.144, -5.269; < 0.05), greater PP values in T1, M3, M5 and HL regions on the non-dominant sides (=4.830, 3.155, 2.686, 3.683; < 0.05), greater I values in M1, MF, and HM regions on the dominant sides (=-2.380, -2.185, -5.320; < 0.05) and greater I values in T1, M3, M5 and HL regions on the non-dominant sides (=4.489, 2.247, 2.838, 3.992; < 0.05). post-operatively, the pressure tended to be compatible between the two sides in regions of M3 and MF, while the magnitude of laterality in regions of M1 (= -2.721, =0.007; =-2.581, =0.010), M2 (=-2.674, =0.007; =-2.375, =0.018) and M5 (=1.991, =0.046; =2.150, =0.032) was further increased.
Changes in plantar pressure after cataract surgery were characterized as increased pressure in the 2nd metatarsal head area on the dominant side. Visual restoration might intensify the laterality in the medial of forefoot on the dominant side and the lateral of forefoot on the non-dominant side.
分析白内障手术后视力恢复对老年个体足底压力和足部生物力学的影响。
选取2016年10月至2019年12月期间32例年龄相关性白内障患者[男/女5/27，（70.1±5.2）岁]。采用Footscan系统记录白内障手术前及术后1个月平路行走时的足底压力数据。分别分析第一趾（T1）、第二至五趾（T2 - 5）、第一至五跖骨头（M1 - M5）、中足（MF）、内侧后足（HM）和外侧后足（HL）区域的峰值压力（PP）、冲量（I）、压力 - 时间积分（PTI）和达到峰值压力的时间（TPP）参数。
术后，双眼视力有效重建，视力提高（=-4.878，-4.801；<0.001）。优势侧（右脚）M2区域的PP值（=2.266，=0.031）和I值（=2.152，=0.039）在术后阶段有统计学意义的增加，而其他区域的压力和时间参数变化保持稳定。术前足底压力存在侧别差异，表现为优势侧M1、M2、MF和HM区域的PP值更大（=-2.414，-2.478，-2.144，-5.269；<0.05），非优势侧T1、M3、M5和HL区域的PP值更大（=4.830，3.155，2.686，3.683；<0.05），优势侧M1、MF和HM区域的I值更大（=-2.380，-2.185，-5.320；<0.05），非优势侧T1、M3、M5和HL区域的I值更大（=4.489，2.247，2.838，3.992；<0.05）。术后，M3和MF区域两侧压力趋于一致，而M1（=-2.721，=0.007；=-2.581，=0.010）、M2（=-2.674，=0.007；=-2.375，=0.018）和M5（=1.991，=0.046；=2.150，=0.032）区域的侧别差异程度进一步增加。
白内障手术后足底压力变化的特征是优势侧第二跖骨头区域压力增加。视力恢复可能会加剧优势侧前足内侧和非优势侧前足外侧的侧别差异。
