The in vivo impact of computer navigation on screw number and length in reverse total shoulder arthroplasty

Metaverse, virtual reality and augmented reality in total shoulder arthroplasty: a systematic review

“…Five studies [ 19 , 20 , 23 , 24 , 30 ] reported the mean number of screws used in their cohorts, while four studies [ 20 , 21 , 23 , 28 ] reported the mean length of the screws used. The mean surgical time was reported by seven studies [ 15 , 23 , 25 , 26 , 28 , 30 , 31 ]: the longest time for the navigated and non-navigated cohorts was found by Sasaki et al [ 19 – 26 , 29 ].…”

“…Before the advent of computer navigation, the capacity to accurately position longer screws was hindered by the difficulty of visualizing the screw’s trajectory due to the absence of clear visual bony reference points. Studies have indicated that increasing the number of screws reduces the likelihood of baseplate displacement, while extending the length of screws may also serve as an effective alternative [ 20 , 65 ]. A retrospective case-control study showed that computer navigation results in the use of fewer and longer baseplate screws, suggesting that these results may decrease scapular spine stresses and allow for maintained bone stock [ 20 ].…”

“…Studies have indicated that increasing the number of screws reduces the likelihood of baseplate displacement, while extending the length of screws may also serve as an effective alternative [ 20 , 65 ]. A retrospective case-control study showed that computer navigation results in the use of fewer and longer baseplate screws, suggesting that these results may decrease scapular spine stresses and allow for maintained bone stock [ 20 ].…”

A Systematic Review of the Utility of Intraoperative Navigation During Total Shoulder Arthroplasty

“…To explore the outcome of computer navigation on screw length and number during baseplate placement, Hones et al evaluated their effect with rTSA placed in vivo [ 30 ]. They reported notably fewer screws per case (three screws vs. four screws on average, p < 0.001) and greater average screw length (35.0 mm in the navigation group vs. 32.6 mm in the conventional group, p < 0.001).…”

“…The number of screws can not only significantly alter glenoid bone reserve but also lead to a decreased operative time and a smaller risk of failure from glenoid stress risers [ 5 , 30 , 31 , 34 , 36 ]. Hones et al reviewed 200 rTSAs, both navigated and conventional, and found that CT navigation utilised fewer screws and a greater length than the conventional technique: 3.4 vs. 4.1 screws, 35.0 mm vs. 32.6 mm screws, respectively [ 30 ]. Although limited in long-term clinical outcomes given the recent rise of navigation applications, these measurements can also impact the operative time and operative costs per case.…”