In order to investigate the strain gauge characteristics of NiCr thin films, 500 nm NiCr (80 wt.-% and 20 wt.-%, respectively) thin films were deposited on glass substrates by DC magnetron sputtering. After deposition, NiCr thin films were characterized by using X-Ray diffraction analysis, scanning electron microscope and four-point probe techniques inview of crystallization, phases, film structure and electrical resistivity. After characterization, NiCr thin films were shaped into strain gauges by photo lithography and wet etching techniques. Strain gauges were tested with different loads, and strain values were calculated by comparing the results with commercial NiCr strain gauges with the same surface area. Resistivity change vs. strain was plotted, and the gauge factor of fabricated thin film strain gauges was evaluated as 1.23.
Los Angeles (UCLA) scores and Constant-Murley scores were made preoperatively and at the final follow-up.Results: At the final follow-up, forward flexion was increased from 109˚±24.7 to 144˚±22.21 (p=0.005), abduction from 60˚±16.33 to 135˚±16.33 (p=0.005) and external rotation from 12˚±16.87 to 35˚±14.34 (p=0.005). Total UCLA scores were 5.9±2.13 to 22.7±5.29 (p=0.005), Constant-Murley scores were 24±9.43 to 50.2±14.28 (p=0.008), VAS scores were 6.1±1.1 to 2.4±1.35 (p=0.007), mean acromio-humeral distances were 4.64±0.85 mm (3.42-6.23 mm) to 6.58 mm (5.25-8.21 mm) (p=0.005) preoperatively and at the final follow-up. Except one patient who had a frozen shoulder any significant complication was detected.
Conclusion:Adding interpositional repair to the LT tendon transfer in patients with posterior superior irreparable rotator cuff tear seems to have satisfactory short to mid-term clinical outcomes without an increase in complications.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.