Shoulder Dislocation s Shoulder dislocation 1 DISLOCATION COMPLETE
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Shoulder Dislocation
s
Shoulder dislocation 1. DISLOCATION- COMPLETE LOSS OF GLENOHUMERAL ARTICULATION. CAUSE- ACUTE TRAUMA n n 2. SUBLUXATION - PARTIAL LOSS OF ARTICULATION WITH SYMPTOM’S. CAUSEREPITITIVE TRAUMA. 3. LAXITY - PARTIAL LOSS OF GLENOHUMERAL ARTICULATION BUT PAITENT IS ASYMPTOMATIC. SHOULDER INSTABLITY
Shoulder dislocation n n Shoulder is the most commonly dislocated joint[45%] 1] shallowness of glenoid socket 2]Extraordinary ROM 3] ligamentus laxity Humeral head 3 x larger than glenoid fossa glenohumeral articulation is minimally constrained by bony anatomy alone stability is conferred by a series of dynamic and static soft tissue restraints
Shoulder dislocation Type of dislocation n Traumatic Dislocations Atraumatic dislocation Acquird dislocation
Traumatic dislocation Single force applies excessive overload to the soft tissues of the joint and often damages the Glenoid Labrum (Bankart Lesion) and the joint capsule n Anterior [85%] n Posterior[10] n Inferior [5] n
Atraumatic dislocation Athelete who has joint hyperlaxity and had multiple episode of joint subluxation n Minor injury can results into dislocation [Congenital hypermobility or muscle weakness. ] n
Acquired dislocation n Sports such as swimming, gymnastics and baseball where repetitive microtrauma, poor stretching and motion lead to capsular stretching. Eventual feeling of instability
Traumatic anterior dislocation n Mech. of injury Arm in abduction and external rotation. Force is taken on the hand or arm which increases the external rotation of the arm causing the head of the humerus to dislocate
Clinical symptom: n Pain [severe] n Hold limb with normal limb by side of body. n Abduction and external rotation. n Pt can’t touch apposite shoulder [dugos test] n
Clinical Evaluation n PE: n n n Prominent acromion, sulcus sign, palpable humeral head anteriorly Neuro integrity of axillary and musculcutaneous nerves Apprehension Test: reproduces sense of instability and pain in shoulder reduced prior to exam
Radiographic Evaluation n AP [fracture dislo] Axillary Special Views: n n n West Point axillary: for visualization of glenoid rim Hill-Sach view: internal rotation view Stryker Notch: view 90% of posterolateral humeral head
Management n Pre-Medication n Reduction Maneuvers n Post-Reduction Immobilization
Pre-Medication n Methods of Premedication prior to Reduction n n None Intraarticular Lidocaine IV Sedation Supraclavicular Block Suprascapular Block
IV Sedation vs Intraarticular Lidocaine Injection Intra-articular Lidocaine Injection is Preferred over IV Sedation
Reduction Maneuvers n Is there an Ideal Method for Reduction? n n Over 24 Techniques Described Most Common Techniques n n n Kocher (71 -100%) External Rotation (78 -90%) Milch (70 -89%) Stimson (91 -96%) Traction/Countertraction Scapular Manipulation (79 -96%)
Kocher Maneuver TEA I n n n Traction ER Adduction arm is internally rotated Modified [no traction]
Stimson method
Traction/Countertraction n Arm in some abduction n Traction applied to arm n Assistant applies firm counter-traction with sheet across the body
Hippocratic method n Surgeon use foot applies on axilla for countertraction
Post-Reduction Immobilization n Is immobilization necessary? n What Method is Best?
Does immobilization reduce recurrence? n usually fracture associated with dislocation are reduced with reduction of dislocation. n Immobilization for 3 -4 weeks after shoulder dislocation does NOT change the prognosis compared with immediate mobilization
Internal vs External Rotation n Level II RCT: Itoi JBJS 2007 n ER for 3 weeks n n IR for 3 weeks n n Recurrence rate: 32% Recurrence rate: 60% P = 0. 007
Complication of ant. shoulder dislocation Early n Rotator cuff tear n Nerve injury n Vascular injury n Fracture dislocation
Late complication Stiffness n Unreduced disloction [undiagnos in unconcious and old pts. ] closed reduction done upto 6 wks and open reduction done after 6 wks in young pts. Willful neglect in old pts n Recurrent dislocation n
Post. Shoulder dislocation The arm is in flexion and adduction. Force is taken on the hand, causing the head of the humerus to be push out the glenoid posteriorly. n h/o convulsion or electric shock n
Clinical sign and symptom n Diag is often missed n Internal rotation n Flat front of shoulder n Prominent corocoid n Frominent post aspect of shoulder
Radiology n AP- electric bulb apperence and empty glenoid sign. n Lat – post displacement
Treatmet n Under GA reduction by pulling arm in adduction to dis engage head then lateraly rotate while pushing head anteriorly. n Immobilization in ext rotation and abduction for 3 wks. n
Inferior shoulder dislocation[luxatio erecta] Arm is in excessive abduction and a force is taken on the hand pushing the head of the humerus inferiorly out of the glenoid. Clinical features limb in abduction
Inferior shoulder dislocation[luxatio erecta] n n Xrays –AP LAT
Inferior shoulder dislocation[luxatio erecta] n Treatment Traction and counter traction. Immobilised for 3 wks
Recurrent shoulder dislocation q Anterior dislocations account for ~95% of shoulder dislocations n Typically occurs in athletes who are < 25 years old Males are much more commonly affected than are females (85 -90%) n
Recurrent shoulder dislocation n Pathology most commonly found in shoulders following a dislocation is a Bankart lesion n Disruption of the labrum and the contiguous anterior band of the inferior glenohumeral ligamentous complex (IGHLC) n Bankhart lesion occurs > 85% of the time
Recurrent shoulder dislocation
Bony bankart
n n Hillsach lesion – posteriolateral indentation of humeral head. Enganging lesion is indication of surgery
Recurrent shoulder dislocation
Recurrent shoulder dislocation n Classification n Instability can be classified by: n direction of instability (anterior, posterior, multidirectional) n degree of instability (subluxation, dislocation) n etiology (traumatic, atraumatic, overuse) n timing (acute, recurrent, fixed)
Recurrent shoulder dislocation TUBS or “Torn Loose” n n T raumatic aetiology, U nidirectional instability, B ankart lesion is the pathology, S urgery is required AMBRI or “Born Loose” n A traumatic: minor trauma, M ultidirectional instability may be present, B ilateral: asymptomatic shoulder is also loose, R ehabilitation is the treatment of choice, I nferior capsular shift: surgery required if conservative
Recurrent shoulder dislocation
Recurrent shoulder dislocation n Shoulder n n Stabilisers – Static Intracapsular pressure Labrum: increases depth of the glenoid by 50% Ligaments – main static restraints capsule
Recurrent shoulder dislocation
Shoulder Stabilisers Dynamic Rotator cuff and biceps
Recurrent shoulder dislocation
Recurrent shoulder dislocation
Recurrent shoulder dislocation
Recurrent shoulder dislocation
Recurrent shoulder dislocation n How many number of dislocation is indication of surgery. Frist dislocation in young pateint specially sports person. n Two time dislocation is definit indication of surgery. n
Recurrent shoulder dislocation n Open surgery done for old and multiple recurrent dislocation due plastic deformation of tissue or larg bony defects. n Arthroscopic surgery is done fresh case of recurrent dislocation. n Advantage
Recurrent shoulder dislocation n Anatomic n Repairs Restoring normal anatomy is guiding principle in surgery to correct anterior shoulder instability n If the labrum has been detached, it is reattached to the anterior glenoid rim n If the capsule has been stripped off the glenoid neck, the capsule is reattached to the bony glenoid rim n If greater than one-third of the glenoid fossa is involved, a bone block procedure such as a Bristow or iliac crest bone graft may be considered
Bankart repair
Bankart repair
Recurrent shoulder dislocation n Nonanatomic Repairs [open] n Bristow and latarjet n n n Transfer coracoid process to anteroinferior glenoid Sling effect and bone block Putti-Platt -Subscapularis is cut and shortaned Magnusen-Stack n subscapularis tendon is detached from its insertion on the lesser tuberosity, transferred laterally to the greater tuberosity
Latarjet procedure
Latarjet procedure
Putti-plat operation: n n Putti-plat operation: limited ER
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