Mariotti U, Motta P, Stucchi A, Ponti di Sant'Angelo F
Shoulder Unit, Cellini Clinic, Humanitas Group, Turin, Italy.
Musculoskelet Surg. 2014 Dec;98(3):195-200. doi: 10.1007/s12306-014-0312-5. Epub 2014 Jan 28.
Although several studies have been performed on the use of various devices in total shoulder arthroplasty (TSA), no data are available in order to establish whether to prefer stemmed or stemless humeral components. Thus, the purpose of our study was to evaluate the short-term functional outcome in a cohort of subjects treated with TSA randomized to treatment with stemmed or stemless prosthesis.
In this prospective longitudinal study, we randomized to treatment with stemmed (group 1) or with stemless (group 2) humeral component in nineteen subjects (2 M and 17 F) diagnosed with humeral primary osteoarthritis with indication to TSA. We evaluated the range of movement of all the participants and the functional outcome using Constant score and simple shoulder test (SST) before and after 2 years from surgery.
No differences were detected after 2 years from surgery in the two groups in terms of functional scores and range of motion (p > 0.05).
Stemmed and stemless prostheses are comparable in terms of functional outcome. These data might be useful for the surgeon in order to choose more tissues-paring methodologies and less invasive procedures, such as stemless humeral implants.
尽管已经对全肩关节置换术（TSA）中各种器械的使用进行了多项研究，但尚无数据可用于确定是选择有柄还是无柄肱骨头组件。因此，我们研究的目的是评估一组接受TSA治疗且随机接受有柄或无柄假体治疗的受试者的短期功能结局。
在这项前瞻性纵向研究中，我们将19名被诊断为肱骨头原发性骨关节炎且有TSA适应症的受试者（2名男性和17名女性）随机分为接受有柄肱骨头组件治疗组（第1组）或无柄肱骨头组件治疗组（第2组）。我们在手术前和手术后2年使用Constant评分和简单肩关节测试（SST）评估所有参与者的活动范围和功能结局。
术后2年，两组在功能评分和活动范围方面均未检测到差异（p>0.05）。
有柄和无柄假体在功能结局方面具有可比性。这些数据可能有助于外科医生选择更多保留组织的方法和侵入性较小的手术，例如无柄肱骨头植入物。
