Sabharwal Samir, MacKenzie James S, Sterling Robert S, Ficke James R, LaPorte Dawn M
Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland.
JB JS Open Access. 2020 Jun 9;5(2). doi: 10.2106/JBJS.OA.20.00019. eCollection 2020 Apr-Jun.
The impact of left-handedness on orthopaedic surgeons and trainees has not been well described. We investigated the prevalence and perceived impact of left-handedness among orthopaedic surgeons and trainees.
We distributed a survey regarding handedness to active members of the American Orthopaedic Association and the Council of Orthopaedic Residency Directors affiliates, including department chairs, program directors, and residency and fellowship program coordinators. Program coordinators were asked to distribute the survey to their current residents and fellows.
Of 510 survey respondents, 78 (15%) were identified as left hand dominant (LHD). Regarding scalpel/cautery use, 64% of LHD respondents reported using their left hand primarily and 10% reported using their right hand primarily; 26% of LHD respondents described themselves as ambidextrous in scalpel/cautery use, compared with 4.7% of right hand dominant (RHD) respondents (p < 0.001). Regarding suturing, 53% of LHD respondents reported using their left hand primarily and 38% reported using their right hand primarily; 9.0% of LHD respondents described themselves as ambidextrous when suturing, compared with 1.9% of RHD respondents (p = 0.012). Only 5.1% of LHD respondents reported having received laterality-specific psychomotor training, whereas 17% perceived a need for such training during residency; RHD respondents reported similar rates. Ambidexterity in scalpel/cautery use or suturing among LHD respondents was not associated with the perception that their left-handedness was advantageous. LHD attending surgeons were more likely than LHD trainees to perceive their handedness as advantageous (p = 0.007).
Fifteen percent of orthopaedic surgeons and trainees who responded to our survey were LHD. LHD respondents reported significantly higher rates of ambidexterity in both scalpel/cautery use and suturing compared with RHD respondents. Ambidexterity was not associated with a self-perception that left-handedness was advantageous. LHD-attending surgeons were significantly more likely than LHD residents/fellows to perceive their left-handedness as advantageous. There may be benefits to pairing LHD residents with LHD faculty surgeons early in their training to provide mentorship and insight regarding performing surgical procedures left handed.
Level IV.
左利手对骨科医生及实习医生的影响尚未得到充分描述。我们调查了骨科医生及实习医生中左利手的患病率及其感知到的影响。
我们向美国骨科协会及骨科住院医师主任委员会附属机构的在职成员发放了一份关于利手的调查问卷，这些成员包括科室主任、项目主任以及住院医师和专科医师培训项目协调员。要求项目协调员将调查问卷分发给他们目前的住院医师和专科医师。
在510名调查对象中，78人（15%）被确定为左利手（LHD）。在手术刀/电灼器使用方面，64%的左利手调查对象报告主要使用左手，10%报告主要使用右手；26%的左利手调查对象称自己在使用手术刀/电灼器时双手灵活，而右利手（RHD）调查对象中这一比例为4.7%（p<0.001）。在缝合方面，53%的左利手调查对象报告主要使用左手，38%报告主要使用右手；9.0%的左利手调查对象称自己在缝合时双手灵活，而右利手调查对象中这一比例为1.9%（p = 0.012）。只有5.1%的左利手调查对象报告接受过针对利手的精细运动训练，而17%的人认为在住院医师培训期间需要此类训练；右利手调查对象报告的比例相似。左利手调查对象在使用手术刀/电灼器或缝合时双手灵活，与认为自己的左利手具有优势的看法无关。左利手的主治医生比左利手的实习医生更有可能认为自己的利手具有优势（p = 0.007）。
在回复我们调查的骨科医生及实习医生中，15%为左利手。与右利手调查对象相比，左利手调查对象报告在使用手术刀/电灼器和缝合时双手灵活的比例显著更高。双手灵活与认为左利手具有优势的自我认知无关。左利手的主治医生比左利手的住院医师/专科医师更有可能认为自己的左利手具有优势。在培训早期将左利手住院医师与左利手的指导医生配对，可能有助于提供关于左手进行外科手术的指导和见解。
四级。
