The purpose of this study was to record the basic morphometric values of the acromion. Forty-four pairs of dried scapulas were reviewed. Acromial shape was evaluated in relation to sex, symmetry and presence of subacromial enthesophytes and classified according to Bigliani with the following results: type I (flat): 26.1%, type II (curved): 55.6% and type III (hooked): 18.1%. There was a greater...

When reviewing articles in the literature, it is important to spend some time thinking specifically about the data presented. The data collected in an experiment may be classified into two general types. Continuous data represent data that vary over a continuous range and may be displayed on a curve, frequently a bell-shaped curve. Some examples of continuous data include height, age, and the t...

[Purpose] This study investigated the effect of the spacing of backpack shoulder straps on cervical muscle activity, acromion and scapular position, and upper trapezius (UT) pain. [Subjects] Fourteen males aged 20-32 years, were recruited. [Methods] We measured the MPS (midcervical paraspinal) activity, acromial angle, scapular distance, and UT pain after gait carrying a backpack with different...

The authors report the case of a 65-year-old man who presented with an expansive osteolytic lesion in the right acromion, mimicking cystic fibrous dysplasia. Magnetic resonance imaging showed a lesion with intermediate-signal intensity on T1-weighted images and a high-signal intensity on fat suppressed T2-weighted images. The biopsy led to the diagnosis of chondroblastoma. This tumour is rare i...

[Purpose] This study investigated the changes in acromion and scapular position after short-term overhead work. [Subjects] Twelve males aged 20-27 years, were recruited. [Methods] We measured the acromial angle and scapular inferior distance using a palpation meter before and after overhead work. [Results] The acromion angle was significantly decreased after the overhead work compared to before...

3 INSERTION OF THE CORACO-ACROMIAL LIGAMENT IN THE ACROMION: HISTOLOGIC STUDY OF THE DEGENERATIVE ENDOCHONDRAL OSSIFICATION O. Lech, MD, J. Barbosa, MD, A. Gailit, Jr, MD, and A. Marcolan, MD; Instituto de Ortopedia e Traumatologia de Passo Fundo, RS, Brazil The authors evaluate the incidence of degenerative endochondral ossification at the insertion of the coraco-acromial ligament (CAL) in the...

HYPOTHESIS AND BACKGROUND Narrowing of the subacromial space has been implicated in several shoulder pathologies. However, the location of the minimum distance points during clinical testing has not been defined. We sought to measure the in vivo minimum distance and location of the minimum distance points on the acromion and proximal humerus during arm elevation. METHODS Eight healthy male su...

A new technique of shoulder fusion is presented using a posterior approach. After removal of the articular cartilage, a Rush pin is introduced from the spine of the scapula, through the glenoid into the medullary canal of the humerus. This is supplemented by tension-band wiring from the acromion to the neck of the humerus and a muscle pedicle graft attached to the acromion. A shoulder spica is ...