11. This relieves pressure on the newly formed wrist joint of the pisiform, hamate and capitate. 12. The station's 58-foot ( 17-meter ) arm has a wrist joint that needs to be replaced. 13. The arm needs a new wrist joint , and a pair of spacewalkers will perform the surgery. 14. One of the three wrist joints in the Canadian-built high-tech construction crane seized up in March. 15. One last excursion is scheduled for Thursday, to replace a wrist joint in the robot arm. 16. One of three wrist joints malfunctioned in March. 17. During a final spacewalk Thursday, the two men plan to replace the robot arm's wrist joint assembly. 18. In this forelimb posture, the hand and wrist joints are aligned in a relatively straight, neutral posture. 19. The astronauts also plan to replace a faulty wrist joint on the $ 600 million station arm. 20. The old wrist joint kept seizing up.