PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Deltoid Muscle”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 127 records · Page 7Linked to original sources
PubMed2003

The reversed Delta shoulder prosthesis in reconstruction of the proximal humerus after tumour resection.

The authors present two series of six and seven patients respectively, with a tumour of the proximal humerus, who were treated at two different institutions with a Delta type inverted shoulder prosthesis (DePuy International Ltd) after a Malawer type Ia or Ib resection. The rationale of using an inverted shoulder prosthesis is the aim to improve the functional outcome in rotator cuff deficient shoulders. This type of prosthesis medializes and lowers the centre of rotation, lengthens the lever arm of the deltoid muscle and improves its function. At one institution the resected part of the humerus was re-implanted after extracorporeal irradiation. It was fixed intramedullarly by cementation of the humeral prosthetic component to facilitate restoration of humeral height. This graft allowed reinsertion of muscles (deltoid, pectoralis, biceps) thus improving power generation postoperatively. The largest glenosphere, size 42, was routinely used to reconstruct the glenoid; this theoretically improves the functional outcome (increased external rotation) and stability. At the other institution no graft augmentation was used except in one patient. The height of the humeral prosthetic component was assessed after resection of the tumour by measurement of the resected part. The prosthetic stem was fitted in the remaining part of the humeral diaphysis, in three cases by cementation and in three cases by press-fit (hydroxyapatite coating). Muscle balance was appreciated intra-operatively. Stability of the prosthesis was directly related to the level of resection. Both techniques resulted in a minimum active abduction of 60 degrees, reaching 90 degrees or more in most patients. When compared to other results in the literature, this is a major functional improvement. The mean adjusted postoperative Constant score was 72.5% (range: 30-90%), and the mean MSTS score was 75.8% (range 36.7-96.7%).

Adult↗
PubMed1976

Studies on muscular strength-myogram (MSMG). Part 1. A new device of apparatus for measuring muscular strength-myogram.

1. A new apparatus, consisting of a strain gauge and a carrier amplifier, was devised for measuring back muscular and shoulder arms strength by the author. This apparatus was applied for analysing myogenic disorder related to muscular fatigue or pain. 2. Muscular strength with load and its myogram were recorded simultaneously, and their changes during the exertion were analysed. 3. Muscular strength-myograms of sternocleidomastoid muscle, upper trapezius muscle, deltoid muscle, rhomboid muscle and lumbodorsal muscle were observed from the back muscular strength-myogram, and those of teres minor muscle and major pectoral muscle from the shoulder arm strength-myogram. 4. It seemed paradoxically that the amplitude of action myogram increased in proportion to the grade of lowering of muscular strength caused by muscular fatigue or pain.

Adult↗