Abstract：
HYPOTHESIS:We hypothesized that the clavicle overrides the acromion during certain shoulder motions for individuals with acromioclavicular (AC) joint separation producing clinical symptoms. We measured 3-dimensional clavicular and scapular motions in AC joint separation models during humerothoracic motions, which should be impacted by the loss of AC joint continuity. MATERIALS AND METHODS:Ten shoulders from 6 whole cadavers were used. The scapular and clavicular motions were measured in intact and AC joint separation models using an electromagnetic tracking device. The measurement was performed during shoulder abduction with humerothoracic neutral rotation. It was also measured during shoulder abduction with humerothoracic internal rotation, which could cause clavicular overriding. The kinematic changes caused by ligament sectioning were evaluated in these 2 arm motions. RESULTS:The clavicle completely overrode the acromion in all AC separation models during abduction with internal rotation, but not in any shoulders during abduction with neutral rotation. Upward clavicular rotation increased, posterior clavicular rotation decreased, and external scapular rotation decreased with ligament sectioning. These kinematic changes were common for both of the measured arm motions. Scapular upward rotation and posterior tilt did not change because of ligament sectioning during abduction with neutral rotation. However, these scapular rotations significantly decreased with ligament sectioning during shoulder abduction with internal rotation. CONCLUSION:Scapular and clavicular kinematics were affected in AC separation models. Abduction with humeral internal rotation resulted in a decrease in scapular posterior tilt and upward rotation in AC separation models, and thereby could lead to AC joint articulation dysfunction.
journal_name
J Shoulder Elbow Surgjournal_title
Journal of shoulder and elbow surgeryauthors
Oki S,Matsumura N,Iwamoto W,Ikegami H,Kiriyama Y,Nakamura T,Toyama Y,Nagura Tdoi
10.1016/j.jse.2013.01.004subject
Has Abstractpub_date
2013-10-01 00:00:00pages
1433-9issue
10eissn
1058-2746issn
1532-6500pii
S1058-2746(13)00027-Xjournal_volume
22pub_type
杂志文章abstract：:Six hundred one total shoulder arthroplasties and eighty-nine hemiarthroplasties were performed for primary osteoarthritis of the shoulder. Patients were evaluated with a physical examination, Constant score, and radiographic evaluation. The minimum follow-up was 2 years. At follow-up, the Constant score averaged 64 p...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章,多中心研究
doi：10.1016/s1058-2746(02)86804-5
更新日期：2003-05-01 00:00:00
abstract：:Stereophotogrammetry was used to investigate the functional relations between the articular surface geometry, contact patterns, and kinematics of the glenohumeral joint. Nine normal shoulder specimens were elevated in the scapular plane by using simulated muscle forces in neutral rotation (NR) and starting rotation (S...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1067/mse.2001.111959
更新日期：2001-01-01 00:00:00
abstract：:Incomplete functional recovery after rotator cuff surgery can be caused by rerupture or incomplete restoration of the contractile properties of the muscle-tendon-bone unit. We measured the passive tension generated in the supraspinatus musculotendinous unit at the time of repair of the supraspinatus tendon performed f...
journal_title：Journal of shoulder and elbow surgery
pub_type： 临床试验,杂志文章
doi：10.1016/s1058-2746(98)90030-1
更新日期：1998-07-01 00:00:00
abstract：BACKGROUND:A hyperosmolar irrigation solution has been reported to be safe and have potential benefits for use during shoulder arthroscopy in an animal model study. In this study, the clinical effects of a hyperosmolar solution were compared with a standard isotonic solution when used for shoulder arthroscopy. METHODS...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jse.2017.02.021
更新日期：2017-05-01 00:00:00
abstract：BACKGROUND:Proximal humerus fractures are one of the most common fractures among elderly patients. We performed a systematic review to detail the demographics, outcomes, and complications of patients who undergo reverse shoulder arthroplasty for complex proximal humerus fractures. METHODS:A systematic review of the li...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章,评审
doi：10.1016/j.jse.2013.09.012
更新日期：2014-04-01 00:00:00
abstract：:The incidence of primary and secondary bicipital tendinitis remains unknown. In our prospective study, 200 consecutive shoulders underwent arthroscopic subacromial decompression for impingement syndrome. A biceps tenodesis was performed in 80 shoulders (40%) featuring macroscopic degeneration of the long head of the b...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1067/mse.2000.108386
更新日期：2000-09-01 00:00:00
abstract：:We identified 5 patients with valgus instability of the elbow due to nonunion of a previous fracture of the medial epicondyle. There were 4 male patients and 1 female patient with a mean age of 35 years (range, 15-54 years). The original avulsion fracture of the medial epicondyle had occurred a mean of 10.1 years prev...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1067/mse.2002.126206
更新日期：2002-09-01 00:00:00
abstract：BACKGROUND:Distal biceps reconstruction for chronic rupture often requires a graft to recover length and allow for distal tendon reattachment to bone. Our purpose was to assess peak strength and endurance recovery following biceps reconstruction with tendon grafts. HYPOTHESIS:We hypothesized that allograft reconstruct...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2019.12.016
更新日期：2020-04-01 00:00:00
abstract：BACKGROUND:Total elbow arthroplasty (TEA) is associated with high complication rates compared with other large-joint arthroplasties. The frequency and type of complication may differ, depending on the surgical approach. A comparison of outcomes with triceps-off and triceps-on approaches was investigated. METHODS:Seven...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2014.11.038
更新日期：2015-03-01 00:00:00
abstract：:Two cases of long thoracic nerve palsy associated with thoracic outlet syndrome are reported. Both patients had abnormal posture, with low-set shoulders and winged scapulae. Clinically there was weakness of the serratus anterior muscle with partial denervotion on electromyography. The diagnosis of thoracic outlet synd...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/S1058-2746(09)80005-0
更新日期：1994-01-01 00:00:00
abstract：BACKGROUND:Shear forces at the bone-implant interface lead to a loss of reduction after locking plate fixation of proximal humeral fractures. The aim of the study was to analyze the roles of medial support screws and screw augmentation in failure loads and motion at the bone-implant interface after locking plate fixati...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jse.2015.06.028
更新日期：2015-12-01 00:00:00
abstract：BACKGROUND:The critical shoulder angle (CSA) has been shown to be correlated with shoulder disease states. The biomechanical hypothesis to explain this correlation is that the CSA changes the shear and compressive forces on the shoulder. The objective of this study is to test this hypothesis by use of a validated compu...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2020.03.002
更新日期：2020-10-01 00:00:00
abstract：BACKGROUND:Fatty infiltration of the muscle bellies is an important prognostic factor in rotator cuff tears. It was described initially in computed tomography examinations, and there is an ongoing debate about whether magnetic resonance (MR) is a reliable method for staging fatty infiltration. This study sought to dete...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2015.02.011
更新日期：2015-08-01 00:00:00
abstract：BACKGROUND:It was the purpose of this paper to analyze structural, functional, and electrophysiologic variables that may determine preserved overhead function for patients with massive rotator cuff tears. METHODS:Nineteen patients (20 shoulders) were prospectively included in either the pseudoparalytic (n = 9) or the ...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2014.05.026
更新日期：2015-02-01 00:00:00
abstract：:Twenty uninjured male volunteers were studied to characterize normal elbow proprioception and to investigate the effect of applying an elastic bandage to the extremity and injection of an intraarticular anesthetic. A modified Biodex dynamometer was used to study position sense and detection of motion. In part 1 of the...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/s1058-2746(98)90202-6
更新日期：1998-09-01 00:00:00
abstract：BACKGROUND:The role of the anconeus in elbow stability has been a long-standing debate. Anatomic and electromyographic studies have suggested a potential role as a stabilizer. However, to our knowledge, no clinical or biomechanical studies have investigated its role in improving the stability of a combined lateral coll...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2018.11.040
更新日期：2019-05-01 00:00:00
abstract：HYPOTHESIS:A review of the current literature will show a difference between the biomechanical properties of double-row and single-row rotator cuff repairs. BACKGROUND:Rotator cuff tears commonly necessitate surgical repair; however, the optimal technique for repair continues to be investigated. Recently, double-row r...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章,评审
doi：10.1016/j.jse.2009.07.002
更新日期：2009-11-01 00:00:00
abstract：:Rotator cuff lesions pose a serious clinical challenge. The objective of this study was to verify the biomechanical basis for the lag sign clinical tests for rotator cuff dysfunction. The lag sign tests were simulated in vitro by a sensor-guided robotic simulator configured to reproduce in vivo testing conditions. The...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2004.01.021
更新日期：2004-05-01 00:00:00
abstract：BACKGROUND:Restoration of native glenohumeral joint line is important for a successful outcome after reverse shoulder arthroplasty (RSA). The aims of this study were to quantify the restoration of glenoid joint line after structural bone grafting and RSA, and to evaluate graft incorporation, correction of glenoid versi...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2020.09.031
更新日期：2020-11-02 00:00:00
abstract：HYPOTHESIS:Three-dimensional (3D) computed tomography (CT) reconstructions have the potential to convey the anatomy of proximal humeral fractures more realistically than do standard 2D images. MATERIAL AND METHODS:Proximal humeral fractures in 248 adult patients were examined prospectively using 3D CT reconstructions....
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2009.03.001
更新日期：2009-07-01 00:00:00
abstract：BACKGROUND:The pathomechanisms of eccentric osteoarthritis of the shoulder remain unclear. Although there is increasing evidence of bony differences between shoulders with rotator cuff tears and osteoarthritis, analogous differences have not been identified for primary concentric and eccentric osteoarthritis. This stud...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2018.05.019
更新日期：2018-12-01 00:00:00
abstract：BACKGROUND:This study was conducted to report loss of reduction and complications after single-tunnel coracoclavicular (CC) ligament reconstruction with autogenous semitendinosus tendon graft for acute acromioclavicular (AC) joint dislocations. METHODS:This retrospective study included patients with acute, unstable AC...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2016.09.014
更新日期：2017-04-01 00:00:00
abstract：:We measured the incidence of cuff retear and injury to the suprascapular nerve after mobilization and repair of a massive rotator cuff tear. Of one hundred four rotator cuff repairs performed over a 5-year period, 10 patients (7 men and 3 women, age range 22 to 68 years) had primary repairs of massive rotator cuff tea...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/s1058-2746(97)90014-8
更新日期：1997-05-01 00:00:00
abstract：:The reliability of surgical procedures for lateral epicondylitis makes the need for reoperation uncommon. In a review of surgical procedures followed by reoperation, failures were classified according to first operations followed by symptoms similar to those experienced preoperatively (group 1) and first operations fo...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/S1058-2746(09)80016-5
更新日期：1992-01-01 00:00:00
abstract：HYPOTHESIS:Traumatic injuries to the ulnar nerve at the elbow are a frequent problem as it is vulnerable to stretching and compression with motion of the upper limb. The aim of the present study was to explore the course of the ulnar nerve at the elbow and forearm and to determine possible anatomical structures that ma...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2009.03.004
更新日期：2009-07-01 00:00:00
abstract：HYPOTHESIS/BACKGROUND:Patients who are treated with reverse shoulder arthroplasty in the setting of proximal humeral bone loss present a technical challenge for humeral component fixation. The purpose of this study was to determine the effect of proximal humeral bone loss on fixation of reverse shoulder humeral implant...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2010.10.026
更新日期：2011-06-01 00:00:00
abstract：BACKGROUND:The Simple Shoulder Test (SST) is a brief, inexpensive, and widely used patient-reported outcome tool, but it has not been rigorously evaluated for patients having shoulder arthroplasty. The goal of this study was to rigorously evaluate the validity of the SST for outcome assessment in shoulder arthroplasty ...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2017.03.029
更新日期：2017-10-01 00:00:00
abstract：:The aim of this study was to evaluate the evolution of intraarticular disease in posttraumatic shoulder instability. Ninety-one patients with posttraumatic shoulder instability were examined arthroscopically. The intraarticular disease was recorded on a special documentation sheet (containing 67 descriptive items). Th...
journal_title：Journal of shoulder and elbow surgery
pub_type： 临床试验,杂志文章
doi：10.1016/s1058-2746(99)90058-7
更新日期：1999-01-01 00:00:00
abstract：BACKGROUND:To investigate whether preemptive extensive rotator interval (RI) release during arthroscopic rotator cuff repair (ARCR) would reduce postoperative stiffness. METHODS:From July 2015 to September 2016, a total of 80 patients who were scheduled for ARCR were enrolled and randomly allocated into 2 groups: the ...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jse.2019.05.021
更新日期：2019-09-01 00:00:00
abstract：HYPOTHESIS:The clavicle serves as a strut between the thorax and scapula, and lack of this function could affect shoulder mobility. We hypothesized that clavicular discontinuity changes shoulder kinematics, particularly affecting scapular motion. MATERIALS AND METHODS:The study used 14 cadaveric shoulders. Cadavers we...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2012.02.006
更新日期：2013-03-01 00:00:00
