patella [pəˈtɛlə]

例句:

• Your patella, or kneecap, rests on the front of your femur.
  来自BBC
• Trabecular metal patella in total knee arthroplasty with patella bone deficiency.
  小梁金属是一种新材料,在全膝关节置换髌骨缺失中具有应用价值.
  
• The patella is triangular with its apes directed downward.
  髌骨是一个夹端指向下的三角形骨.
  
• Fractured tibia about five inches below the patella.
  胫骨断裂位置大概在膝盖以下5英寸.
  
• The fourth bone is your small patella, which is better known as the kneecap.
  来自BBC