Abstract：
BACKGROUND:Osteointegration of press-fit radial head implants is achieved by limiting micromotion between the stem and bone. Aspects of stem design that contribute to the enhancement of initial stability (ie, stem diameter and surface coating) have been investigated. The importance of total prosthesis length and level of the neck cut has not been examined. METHODS:Cadaveric radii were implanted with cementless, porous-coated radial head stems. We resected 10, 12, 15, 20, and 25 mm of radial neck in each specimen. Stem-bone micromotion was measured after each cut. Values were expressed in terms of quotients (cantilever quotient). RESULTS:A threshold effect was observed at 15 mm of neck resection (cantilever quotient, 0.4), with a significant increase in micromotion observed between 12 mm (40 ± 10 μm) and 15 mm (80 ± 25 μm). A cantilever quotient of 0.35 or less predicted implant stability, whereas implants with a cantilever quotient of 0.6 or more were unstable. In between, the stems were "at risk" of instability. CONCLUSION:Initial stem stability of a porous-coated, cementless radial head implant is dependent on length of the implant stem within bone and the level of the cut (amount of bone resected). Stability may be compromised by an implant with a combined head and neck length that is too long compared with the stem length within the canal. We found a critical ratio of exposed prosthesis to total implant length (cantilever quotient of 0.4), which puts the prosthesis at risk of inadequate initial stability. These data carry important implications for implant design and use.
journal_name
J Shoulder Elbow Surgjournal_title
Journal of shoulder and elbow surgeryauthors
Shukla DR,Fitzsimmons JS,An KN,O'Driscoll SWdoi
10.1016/j.jse.2011.11.025subject
Has Abstractpub_date
2012-11-01 00:00:00pages
1559-64issue
11eissn
1058-2746issn
1532-6500pii
S1058-2746(11)00584-2journal_volume
21pub_type
杂志文章abstract：:The goal of this study was to look at the pattern of osteophyte distribution on a 3-dimensional computed tomography scan of patients with symptomatic osteoarthritis in the elbow. We recruited 22 consecutive patients with symptomatic osteoarthritis of the elbow for the study. Three-dimensional reconstructed anterior, p...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2008.03.012
更新日期：2008-11-01 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：BACKGROUND:Although various surgical techniques have been used to treat irreparable rotator cuff tears (RCTs), debate remains regarding which treatment is most effective. The purpose of our study was to compare the outcomes of partial rotator cuff repair versus repair with augmentation of the tenotomized long head of t...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2018.04.022
更新日期：2018-11-01 00:00:00
abstract：BACKGROUND:There is no consensus on what type of arthroplasty is best for the treatment of complex proximal humeral fractures in elderly patients. The purpose of this prospective study was to compare the outcomes of reverse shoulder arthroplasty (RSA) and hemiarthroplasty (HA). METHODS:Sixty-two patients older than 70...
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.2014.06.035
更新日期：2014-10-01 00:00:00
abstract：:An anterior glenoid labrum reconstruction in conjunction with a modified anterior-inferior capsular shift is described and was performed in 64 patients (69 shoulders) with traumatic anterior or anterior-inferior glenohumeral instability. Sixty-three operations were performed for recurrent dislocation and six for recur...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/1058-2746(93)90076-S
更新日期：1993-11-01 00:00:00
abstract：BACKGROUND:Two popular systems for classifying rheumatoid arthritis affecting the elbow are the Larsen and Sharp schemes. To our knowledge, no study has investigated the reliability of these 2 systems. We compared the intraobserver and interobserver agreement of the 2 systems to determine whether one is more reliable t...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2016.07.074
更新日期：2017-01-01 00:00:00
abstract：BACKGROUND:Results of shoulder arthroplasty have been reported to be inferior with posterior glenoid wear and accompanying subluxation of the humeral head. The purpose of this study was to examine the effect of posterior glenoid wear on posterior subluxation of the humeral head. MATERIAL AND METHODS:A custom loading d...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2010.04.010
更新日期：2010-10-01 00:00:00
abstract：BACKGROUND:Reverse shoulder arthroplasty (RSA) humeral implant parameters have been previously studied with respect to range of motion, deltoid function, and stability. However, limited literature exists on the influence of humeral design features on scapular spine strain. The purpose of this cadaveric biomechanical si...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2020.06.011
更新日期：2020-07-02 00:00:00
abstract：BACKGROUND:This study assessed whether treating medial end clavicular fractures using an inverted distal clavicle locking plate, twisted through 90° around its axis, would allow for a less invasive surgical approach and improve screw trajectory insertion. MATERIALS AND METHODS:We searched the databases of the 2 senior...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2018.08.047
更新日期：2019-04-01 00:00:00
abstract：METHODS:We investigated the effect of application of fibroblast growth factor (FGF)-2 on the tendon-to-bone remodeling of repaired supraspinatus tendon in rats subjected to bilateral detachment. FGF-2 (100 mg/kg) in a fibrin sealant or sealant alone was applied on the right and left shoulders, respectively. Twelve anim...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2009.01.013
更新日期：2009-05-01 00:00:00
abstract：HYPOTHESIS:The nonanatomical design of reverse shoulder prostheses induce medial displacement of the center of rotation, impingements and may reduce the mobility of the shoulder. The aim of this study is to test the hypothesis that during activities of daily living functional mobility of the shoulder can be restored by...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2012.09.014
更新日期：2013-07-01 00:00:00
abstract：BACKGROUND:Acromioclavicular joint separations continue to be a challenge for surgeons, and modern arthroscopically assisted techniques are becoming increasingly widespread. The aim of this study is to evaluate if the use of a biological support in association with a nonresorbable subcoracoid fixation can improve long-...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2020.02.014
更新日期：2020-10-01 00:00:00
abstract：BACKGROUND:The rate of rotator cuff repair failure is between 13% and 67%. Porcine small intestine submucosa (SIS) may be suitable to augment the repair. METHODS:There were 62 patients with moderate and large cuff tears randomized to repair alone (control) or augmentation with SIS (Restore Orthobiologic Implant; DePuy...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.jse.2016.06.006
更新日期：2016-10-01 00:00:00
abstract：HYPOTHESIS:The purpose of this study was to determine the minimal detectable change (MDC) for the Constant score in patients with impingement, a supraspinatus tear, or a massive rotator cuff (RC) tear as observed changes smaller than the MDC might be the result of measurement error. METHODS:The Constant score was reco...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2014.07.003
更新日期：2015-03-01 00:00:00
abstract：BACKGROUND:Very little information on medium- to long-term results is available for surgically treated proximal humeral fractures. The aim of this prospective treatment study was to present long-term results after angular stable plate fixation of displaced proximal humeral fractures and to detect which specific patient...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2014.08.009
更新日期：2015-05-01 00:00:00
abstract：BACKGROUND:Deep prosthetic infection is a potentially devastating complication after total elbow arthroplasty, with an incidence of up to 12%. This study examined the demographics, microbiologic profile, and outcomes of infected total elbow arthroplasty treated with 2-stage revision in a tertiary referral unit. METHOD...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2017.12.033
更新日期：2018-05-01 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：BACKGROUND:After isolated subscapularis repair, improvement in shoulder function has been reported at short-term review. The purpose of this study was to determine whether arthroscopic subscapularis repair provides durable improvement in objective and subjective shoulder function with a low structural retear rate. MET...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2019.03.024
更新日期：2019-11-01 00:00:00
abstract：:The purpose of this study was to evaluate the results of an anatomic open stabilization procedure. Twenty-three consecutive patients with traumatic, recurrent, anterior glenohumeral instability were managed with a modified open procedure. All had a Bankart lesion. A standardized, true anatomic capsulolabral reconstruc...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2003.09.006
更新日期：2004-01-01 00:00:00
abstract：BACKGROUND:Shoulder resurfacing has regained popularity in recent years. This report presents the long-term (>20 years) results of this procedure with regard to patient satisfaction and implant survival. MATERIALS AND METHODS:We followed up 61 patients who underwent shoulder resurfacing procedures (74 shoulders) for a...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2010.08.014
更新日期：2011-07-01 00:00:00
abstract：:The surgical treatment of chronic acromioclavicular injuries remains controversial. There is increasing use of autogenous tendon grafts to perform these reconstructions. This study examined the mechanical properties of differing configurations of these grafts. Mechanical testing of acromioclavicular joint reconstructi...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2008.01.143
更新日期：2008-09-01 00:00:00
abstract：BACKGROUND:The preoperative status of the teres minor (Tm) can affect the outcome of reverse total shoulder arthroplasty (RTSA). The effect of preoperative Tm hypertrophy on the outcome of RTSA is unclear. METHODS:A total of 86 shoulders that underwent RTSA were retrospectively enrolled. Of these, 48 cases with a Tm o...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2019.10.014
更新日期：2020-06-01 00:00:00
abstract：BACKGROUND:The pennation angle is an important architectural and functional feature of pennate muscles. The purpose of this study was to investigate the change in the pennation angle of the supraspinatus muscle after rotator cuff tear repair. MATERIALS AND METHODS:The study included 68 patients who underwent arthrosco...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2018.10.021
更新日期：2019-05-01 00:00:00
abstract：:Studies show that the radial head is a significant stabilizer to valgus and varus stresses and external rotatory stability. We review the outcomes of patients who had radial head replacement in our institution. Six patients with Mason-Johnston type III or IV radial head fractures underwent radial head replacement and ...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2007.07.020
更新日期：2008-03-01 00:00:00
abstract：BACKGROUND:Locked anterior shoulder (LAS) with static instability and anterior glenoid bone loss is challenging in the elderly population. Reverse shoulder arthroplasty (RSA) has been employed in treating these patients. No study has compared RSA for LAS with classically indicated RSA. METHODS:A retrospective case-con...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2016.04.019
更新日期：2016-12-01 00:00:00
abstract：:The distribution of mineralization of the subchondral bone plate (DMSB) is used as a parameter for the individual stress distribution of joints. In this study the DMSB of the glenoid from healthy glenohumeral joints was analyzed. In a standardized manner, 44 macroscopically normal shoulder specimens (28 individuals ag...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1067/mse.2002.121635
更新日期：2002-03-01 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:The purpose of this study was 2-fold: (1) to quantify type E2 bone loss orientation and its association with rotator cuff fatty infiltration and (2) to examine reverse baseplate designs used to manage type E2 glenoids. METHODS:Computed tomography scans of 40 patients with type E2 glenoids were examined for ...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2019.11.009
更新日期：2020-07-01 00:00:00
abstract：BACKGROUND:Mobile technology offers the prospect of delivering high-value care with increased patient access and reduced costs. Advances in mobile health (mHealth) and telemedicine have been inhibited by the lack of interconnectivity between devices and software and inability to process consumer sensor data. The object...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2018.01.013
更新日期：2018-07-01 00:00:00
abstract：BACKGROUND:The aim of this study was to evaluate the long-term functional and cosmetic results as well as the sagittal and coronal plane remodeling of displaced supracondylar humerus fractures treated with open reduction and internal fixation. METHODS:In total, 49 patients (11 boys and 38 girls) with Gartland type III...
journal_title：Journal of shoulder and elbow surgery
pub_type： 杂志文章
doi：10.1016/j.jse.2014.12.010
更新日期：2015-04-01 00:00:00
