Background

Prevention of domino effects after distal radius fractures is important for improving life expectancy. Fragility fractures secondary to falls are associated with decreased bone mineral density, muscle strength, and exercise capacity. Grip strength is one of the simplest and most useful tests to comprehensively judge muscle strength. The purpose of this study was to examine whether grip strength is associated with bone mineral density, limb muscle mass, muscle strength, and exercise capacity, by comparing patient backgrounds based on the presence or absence of grip weakness in female patients with distal radius fractures.

Methods

This study included women with distal radius fractures who visited our orthopedics outpatient department between April 2015 and April 2020. Bone mineral density, limb muscle mass, skeletal muscle mass index, muscle strength (grip strength on unaffected side and quadriceps muscle strength), the Timed Up and Go test, and the Two-Step test were evaluated six to eight weeks after injury. Patients were divided into two groups according to the cutoff value of grip strength (18–21 kg), and 90 age-adjusted and matched participants were compared and examined.

Results

At the cutoff value of 18 kg, a significant decrease in lumbar spine and total proximal femur bone mineral density (p < 0.05, p < 0.05), limb muscle mass and skeletal muscle mass index (p < 0.01, p < 0.05), quadriceps femoris muscle strength (p < 0.01), the Timed Up and Go test (p < 0.05), and the Two-Step test (p < 0.01), was observed in the grip-weakness group compared to that in the no-grip-weakness group.

Conclusions

In women with distal radius fracture and grip strength <18 kg on the unaffected side, bone mineral density, limb muscle mass, quadriceps femoris strength, and exercise capacity may be reduced. These results suggest reduced grip strength may be an indicator for further testing to prevent domino effects.

中文翻译：

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当未受影响的侧握力小于18 kg时，女性桡骨远端骨折患者的骨密度、四肢肌肉质量、肌力和运动能力均降低

背景

预防桡骨远端骨折后的多米诺骨牌效应对于提高预期寿命很重要。跌倒继发的脆性骨折与骨矿物质密度、肌肉力量和运动能力下降有关。握力是综合判断肌肉力量最简单、最有用的测试之一。本研究的目的是通过比较桡骨远端骨折女性患者是否存在握力无力的患者背景，探讨握力是否与骨矿物质密度、肢体肌肉质量、肌肉力量和运动能力相关。

方法

这项研究包括 2015 年 4 月至 2020 年 4 月期间就诊于我们骨科门诊的患有桡骨远端骨折的女性。骨矿物质密度、四肢肌肉质量、骨骼肌质量指数、肌肉力量（健侧握力和股四头肌力量）、计时Up and Go 测试和两步测试在受伤后六到八周进行评估。根据握力临界值（18-21公斤）将患者分为两组，并对90名年龄调整且匹配的参与者进行比较和检查。

结果

在 18 kg 的截止值下，腰椎和股骨近端总骨矿物质密度显着下降（p < 0.05，p < 0.05），四肢肌肉质量和骨骼肌质量指数（p < 0.01，p < 0.05），股四头肌显着下降与无握力组相比，在握力无力组中观察到股骨肌力量（p < 0.01）、计时起立和开始测试（p < 0.05）和两步测试（p < 0.01）。弱势群体。

结论

对于桡骨远端骨折且健侧握力<18公斤的女性，骨矿物质密度、四肢肌肉质量、股四头肌力量和运动能力可能会降低。这些结果表明握力下降可能是进一步测试以防止多米诺骨牌效应的指标。