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| LETTER TO EDITOR |
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| Year : 2005 | Volume
: 51
| Issue : 1 | Page : 72-73 |
Bilateral post traumatic anterior shoulder dislocation
Kailash L Devalia, VK Peter
Orthopaedic Department, Countess of Chester Health Park, Chester, CH2 1AE, United Kingdom
Correspondence Address:
Kailash L Devalia
Orthopaedic Department, Countess of Chester Health Park, Chester, CH2 1AE
United Kingdom
 Source of Support: None, Conflict of Interest: None  | Check |
PMID: 15793347 
How to cite this article:
Devalia KL, Peter V K. Bilateral post traumatic anterior shoulder dislocation. J Postgrad Med 2005;51:72-3 |
Sir,
Unilateral traumatic shoulder dislocation is a common injury but bilateral shoulder dislocations are rare. The most frequently seen bilateral dislocations are posterior following convulsions.[1],[2] Bilateral anterior shoulder dislocation after trauma have rarely been reported. We found only 8 previously reported cases in the literature. We report a rare case of bilateral traumatic anterior shoulder dislocation and discuss the mechanism of injury.
A 43-year-old male, electrician, presented to our department following a fall off a ladder from a height of 10 feet. He described his arms being hyper-extended at the elbows and abducted at the shoulders as he tried to land on either side of ladder on his outstretched hands.
Clinical examination was suggestive of bilateral anterior shoulder dislocations. He had altered sensation over his right deltoid, however deltoid function was normal on both sides. The radial pulse was present bilaterally. The radiographs confirmed the bilateral anterior shoulder dislocations [Figure - 1], [Figure - 2]. The right shoulder dislocation was associated with greater tuberosity fracture. Both dislocations were reduced closed using the Kocher's technique under general anaesthesia [Figure - 3], [Figure - 4]. The greater tuberosity fragment on the right side was well reduced and hence did not require surgical fixation. Post manipulation, he did not have any worsening of neurological deficit. Both shoulders were immobilised in broad arm polyslings in adduction and internal rotation.
At 4 weeks both shoulders remained reduced. He had no discomfort on the left side but paresthesia over the right deltoid had persisted. At 9 weeks, the shoulder function had improved significantly. At 12 weeks he had forward flexion and abduction of 100 degrees on both sides. External rotation was about 20 degrees with internal rotation up to L3 spine. The altered sensation over the right deltoid had disappeared.
Unilateral shoulder dislocation is a very common orthopaedic presentation. Bilateral dislocations are unusual.[1],[2],[3],[4] In the past there have been a few reported cases of bilateral posterior shoulder dislocation but anterior dislocations have rarely been reported to our knowledge. Most cases with posterior dislocations were following convulsion due to epilepsy, electroconvulsive therapy or in patients with neuromuscular problems.[1],[2],[3],[4] Simultaneous undiagnosed bilateral anterior dislocation has been described in an elderly woman and in young patients during weight training.[3],[4] This patient had no significant past medical history and no history of previous dislocations. There was a history of significant trauma. Both the arms were extended at the elbows and abducted at the shoulders as the patient tried to land on either side of the ladder. The fall pushed both arms out into further extension at the shoulders with associated external rotation that left only the muscles and the joint capsule as the stabilising factors. The mechanism of injury was consistent with the anterior dislocation.
The shoulder is the most commonly dislocated joint in the body, accounting for 85% of all dislocations. Ninety-five per cent of shoulder dislocations are anterior. Ten per cent of these are associated with greater tuberosity fracture. Bilateral anterior dislocations after injury however are rare, mainly as the mechanism necessary to produce such injury is unusual.
Though there are controversies as to whether operative intervention is necessary in younger patients, in patients over forties, most surgeons agree that the first line of treatment would be conservative, as the re-dislocation rate in this age group is less likely. The best position to place the arm in for optimum results is also being re-evaluated. Classical rehabilitation with progressive passive and active physiotherapy of both shoulders is mandatory. The aim of the article is to report this rare injury and to highlight the mechanism that produces such injury.
| :: References | |  |
| 1. | Brown RJ. Bilateral dislocation of the shoulders. Injury 1984;15:267-73.  [PUBMED] |
| 2. | Velkes S, Lokiec F, Ganel A. Traumatic bilateral anterior dislocation of the shoulders. A case report in a geriatric patient. Arch Orthop Trauma Surg 1991;110:210-1. [PUBMED] |
| 3. | Maffulli N, Mikhail HM. Bilateral anterior glenohumeral dislocation in a weight lifter. Injury 1990;21;254-6. |
| 4. | Cresswell TR, Smith RB. Bilateral anterior shoulder dislocations in bench pressing: An unusual cause. Br J Sports Med 1998;32:71-2. [PUBMED] [FULLTEXT] |
Figures
[Figure - 1], [Figure - 2], [Figure - 3], [Figure - 4]
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