Judging from the very dynamic landings that these high altitude landing aircraft seem to be experiencing (High Approach Speeds) it appears that the landing gear is taking more of a beating than their lower altitude operating cousins. As a result, the landing gear is going to need a higher frequency of inspections and maintenance. The Apex bolts on the landing gear scissors seem to need particular attention.
Here is a link to another incident report on the subject with a pretty explicit write up on details of the failures.
https://assets.publishing.service.go...-BVKC_4-05.pdf.
The Safety recommendations in the link worth noting.
Safety Recommendations
There have apparently been a substantial number of MLG torsion link fracture cases brought about by severe shimmying over a period of years. While none of the previous cases resulted in injury, it is clear that such events are likely to have a significant effect on the aircraft's steering capability, could inhibit use of the wheelbrakes in the event of shimmying and are likely to result in wheel, tyre and brake damage. A runway departure could possibly be the eventual result of such an event.
Additionally, it appears that the substantial oscillatory loads associated with MLG shimmy, both before and after torsion link fracture, could potentially cause undetected damage to the aircraft structure.
Changes to relevant sections of the AMM and MPD, together with a number of messages from the manufacturer emphasising the recommended maintenance, have apparently failed to prevent recurrence. It is considered that further measures, including an assessment of the need for improved methods of checking for excessive play in the torsion link apex joint and an increased check frequency, improvement to relevant sections of the AMM and assessment of the need for modification of the joint, need to be implemented. It has therefore been recommended that:
Safety Recommendation 2004-103
The Federal Aviation Authority and the Boeing Commercial Airplane Group should take effective measures aimed at preventing further cases of Boeing 737 main landing gear shimmy and resultant torsion link fracturing brought about by excessive play in the anti-torque links apex joint.