Cystic changes of the humeral head on MR imaging: Relation to age and cuff-tears

Sano, Akihisa; Itoi, Eiji; Konno, Naoaki; Kido, Tadato; Urayama, Masakazu; Satô, Kôzô

doi:10.3109/17453679808999054

Cited by 37 publications

(53 citation statements)

References 7 publications

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“…Because of soft-tissue discrimination and tomographic section acquisition in multiple planes, these noninvasive imaging modalities are also more accurate than radiography in demonstrating and enabling the localization of osseous abnormalities at the cuff attachment site. Whereas some investigators (10)(11)(12)(13)(14) have reported strong associations between rotator cuff tears and osseous cysts or cortical irregularities, other researchers (15)(16)(17)(18) have concluded that bone abnormalities of the greater tuberosity simply represent age-related changes that have no relationship to cuff disorders. Several of these studies had enrollment limited to asymptomatic volunteers or patients with known rotator cuff tears.…”

Section: Discussionmentioning

confidence: 99%

Cystic Changes at Supraspinatus and Infraspinatus Tendon Insertion Sites: Association with Age and Rotator Cuff Disorders in 238 Patients

Fritz¹,

Ouellette²,

O'Hanley³

et al. 2007

Radiology

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Section: Discussionmentioning

confidence: 99%

Cystic Changes at Supraspinatus and Infraspinatus Tendon Insertion Sites: Association with Age and Rotator Cuff Disorders in 238 Patients

Fritz¹,

Ouellette²,

O'Hanley³

et al. 2007

Radiology

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“…Radiographs of shoulders with tears of the rotator cuff show characteristic changes with cysts in the head of the humerus, 1 the formation of spurs on the greater tuberosity, the acromion and the glenoid 2 and superior migration of the head of the humerus. [3][4][5][6][7][8] The last occurs as a result of loss of the function of the cuff as a depressor of the head of the humerus and also of the structures which lie between the head of the humerus and the acromion.…”

mentioning

confidence: 99%

The depressor function of biceps on the head of the humerus in shoulders with tears of the rotator cuff

Kido

Itoi

Konno

et al. 2000

The Journal of Bone and Joint Surgery. British volume

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We investigated the function of biceps in 18 patients (19 shoulders) with lesions of the rotator cuff. Their mean age was 59 years. Another series of 18 patients (19 shoulders) with normal rotator cuffs as seen on MRI acted as a control group. Their mean age was 55 years. A brace was used to maintain contraction of biceps during elevation. Anteroposterior radiographs were obtained with the arm elevated at 0°, 45° and 90° with and without contraction of biceps. The distance between the centre of the head of the humerus and the glenoid was compared in the two groups.We found that in the group with tears there was significantly greater proximal migration of the head of the humerus at 0° and 45° of elevation without contraction of biceps but depression of the head of the humerus at 0°, 45° and 90° when biceps was functioning. We conclude that biceps is an active depressor of the head of the humerus in shoulders with lesions of the rotator cuff. Patients and MethodsBetween November 1996 and October 1997 we treated surgically 18 patients (19 shoulders) with tears of the rotator cuff which had been diagnosed by arthrography or MRI. There were 14 men and four women with a mean age of 59 years (44 to 77). Eleven shoulders had full-thickness tears, five of which were large (>3 cm), three medium (1 to 3 cm) and three small (<1 cm). Eight shoulders had partialthickness tears of which seven were medium and one small. The long head of biceps was intact in all of these patients. A control group of 19 shoulders was asymptomatic with normal rotator cuffs as seen on MRI. There were 15 men and four women with a mean age of 55 years (17 to 77). There was no significant difference in age (p = 0.38) and gender (p = 0.99) between the two groups. Anteroposterior radiographs were taken with the arm elevated at 0°, 45° and 90°, the elbow flexed and the forearm supinated, and a brace applied which allowed active contraction of biceps without the other muscles (Fig. 1). The resistant force produced by the band was approximately 1.5 kg. The distance between the centre of the head of the humerus and the glenoid was measured and processed using National Institute of Health software 11 (NIH Image; National Institute of Health, Bethesda, Maryland) (Fig. 2). In four volunteers with a mean age of 30 years (29 to 31) EMG was performed using the brace and activity in the anterior, middle and posterior deltoid, triceps, trapezius and pectoralis major recorded at 0°, 45° and 90° of elevation. We were able to confirm that when using the brace, only biceps was contracting significantly. These activities were measured as percentages of the maximum voluntary contraction (% MVC). 12,13Statistical analysis. The results in the two groups were compared using a one-way between-group analysis of variance (ANOVA), with statistical significance set at the 5% level.

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“…9 Sano et al demonstrated that humeral head cysts located in the posterior half of the middle facet near the bare area were more commonly related to degeneration due to aging, while those located anteriorly and at the lesser tuberosity were associated with tears of the supraspinatus and subscapularis tendons respectively. 10 The etiology of these cysts was postulated to be due to direct contact of the bone at the torn rotator cuff attachment with the coracoacromial arch with possible additional causes including disruption of the tensile force on the bony architecture after tendon tear. 10 Just as in the humeral head cyst studies, in the present study we illustrate that there is a relationship between tibial cysts at the meniscal root insertion sites and ipsilateral meniscal pathology.…”

Section: Discussionmentioning

confidence: 99%

“…10 The etiology of these cysts was postulated to be due to direct contact of the bone at the torn rotator cuff attachment with the coracoacromial arch with possible additional causes including disruption of the tensile force on the bony architecture after tendon tear. 10 Just as in the humeral head cyst studies, in the present study we illustrate that there is a relationship between tibial cysts at the meniscal root insertion sites and ipsilateral meniscal pathology. In particular, there is a statistically significant correlation between cysts at the medial meniscus root insertions and medial meniscus pathology.…”

Section: Discussionmentioning

confidence: 99%

Tibial Plateau Cysts at the Meniscal Root Insertions: Incidence and Association

Didolkar

Vinson²

2011

The Duke Orthopaedic Journal

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Cystic changes of the humeral head on MR imaging: Relation to age and cuff-tears

Cited by 37 publications

References 7 publications

Cystic Changes at Supraspinatus and Infraspinatus Tendon Insertion Sites: Association with Age and Rotator Cuff Disorders in 238 Patients

Cystic Changes at Supraspinatus and Infraspinatus Tendon Insertion Sites: Association with Age and Rotator Cuff Disorders in 238 Patients

The depressor function of biceps on the head of the humerus in shoulders with tears of the rotator cuff

Tibial Plateau Cysts at the Meniscal Root Insertions: Incidence and Association

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