Wednesday, October 29, 2014

Arthroscopy for degenerative disease of the elbow - only 7%

The young patient with elbow arthritis poses significant difficulties in the treatment of the degeneration. Elbow arthroplasty or elbow fusion (which rarely used) are not good options for the young active patient. Elbow arthroplasty has a high rate of loosening and failure within 10 years due to the unique elbow loading during daily living activities. Lifting produces forces of distraction and rotation or torsion to the elbow which may lead to early loosening of the implant. The following case was treated with an elbow arthroscopic cartilage debridement in an attempt to "buy" time and postpone the elbow arthroplasty. She is in her 50s and has a remote history of forearm fracture that caused the arthritis to the elbow. She has 20-140 of flexion and her main problem at the time of presentation was the elbow pain. Preoperative XRs are shown below.





We prefer the lateral position on a bean bag as opposed to the prone position



Portals used are the proximal medial and anterolateral. The proximal medial portal was described by Dr Gary Poehling (I am thankful for his mentorship and training that I received from him on elbow arthroscopy)






Due to proximity of neurovascular structures the elbow arthroscopy is a procedure performed only by 7% of orthopaedic surgeons according to a survey contacted by the American Academy of Orthopaedic Surgeons. The key to avoid a nerve injury is the proper placement of the portals, avoidance of multiple attempts to re-establish the portals and distention of the joint capsule with 30cc of normal saline prior to establishment of the portals. Beginners in elbow arthroscopy should avoid arthritic elbows especially the ones with stiffness that are associated with trauma due to the higher chances of iatrogenic nerve injury.

Arthroscopic images of the elbow as shown below. The patient had significant relief of pain after this procedure.

Top left is the radiocapitellar joint. the other three images show the ulnohumeral joint


Degeneration and synovitis are depicted. Arthroscopic debridement was performed


Patient had increase in her extension and a functional arc of elbow motion after the arthroscopic osteoplasty.


Friday, October 24, 2014

Reverse shoulder replacement for cuff tear "repair" arthropathy

In the case below it is demonstrated that surgical exposure for a reverse shoulder replacement after failed rotator cuff repair in the elderly can be difficult. The patient is in her 70s and has stiffness to the shoulder, a high riding humeral head with shoulder arthritis and a surgical field altered due to scar tissue formation from a previous deltopectoral approach that was used for repair of the rotator cuff. The rotator cuff repair was performed 7 years ago by another surgeon. During surgery it was found that the prior surgeon detached the anterior fibers of the deltoid from the acromion (deltoid take down) and re-attached those after the repair. The partially scarred deltoid made the exposure of the glenoid a difficult task. In this case the release of the inferior capsule and removal of bone from the anterior aspect of the proximal humerus allowed for insertion of a baseplate and glenosphere. The patient had significant relief of pain a few days after her surgery.


High riding humeral head. Anchors from prior rotator cuff repair. Arthritis of glenohumeral joint

Axillary view

Exposure of the humeral head

Exposure of the glenoid


implantation of the baseplate

implanation of the glenosphere
Postoperative shoulder xray after implantation of the reverse total shoulder prosthesis














Saturday, October 18, 2014

Shoulder replacement for postinfectious destructive arthritis

This is a healthy patient in her seventies who presented in our office with right shoulder pain and loss of motion. She had active forward elevation of the shoulder to 20 degrees. She has a history of septic shoulder arthritis which was treated elsewhere 3 years ago with irrigation and debridement and 6 weeks of IV antibiotics via a PICC line. At the time of presentation she had no signs of infection, she had no recurrent infection over the past 43 years and her lab work (WBC, CRP, ESR) was normal. The patient had problems sleeping at night and pain with any motion of the shoulder. Her radiographs were indicative of severe joint destruction, loss of bone stock at the glenoid and humeral head and severe medialization/erosion of the glenoid.





A CT scan demonstrated the severity of the joint destruction.




During surgery we found that the glenoid did not have enough bone stock for insertion of a glenosphere for a reverse shoulder replacement and the rotator cuff (supraspinatus) muscle was torn. The subscapularis was present but was atrophic.

We elected to proceed with a hemiarthroplasty with a large size humeral head to avoid instability and provide some pain relief. Cultures were obtained at the time of surgery that will be held for 3 weeks to look for p. acnes and the patient was placed on oral Augmentin for 3 weeks until cultures finalize.




The post-operative XR shows restoration of the acromion index as described before 
(Association of a Large Lateral Extension of the Acromion with Rotator Cuff Tears



This case illustrates the complexity involved in the treatment of shoulder arthritis that is associated with (1) loss of soft tissue balance-rotator cuff (2) loss of glenoid bone stock.

Although some surgeons would have suggested bone grafting of the glenoid and implantation of a reverse shoulder prothesis we elected not to proceed with this approach due to the (1) high chance of absorption of the bone graft at the glenoid (2) history of infection increasing the chances of failure of the bone graft (3) early loosening of the glenosphere in shoulders with hypoplastic, dysplastic or atrophic glenoids.

Tuesday, October 14, 2014

"Bone spurs" and shoulder replacement surgery

There has been a significant debate about the role of osteophytes (bone spurs) in the pathogenesis of shoulder pain or joint pain. There is nowdays enough evidence to support that "bone spurs" do not always cause shoulder pain. For example, foot and ankle surgeons believe that the calcaneal bone spurs that are seen in the plantar ligaments of the foot (spring ligaments) are traction spurs and are not sources of pain. In addition, recent studies show that rotator cuff repair with or without acromioplasty (removal of bone spurs from acromion) have the same outcome in shoulder function and pain relief.

The following case is an example of a similar clinical condition. This patient is in her seventies and presented with symptoms of pain and popping of the glenohumeral joint of the left shoulder. On radiographs of the shoulder, as seen below, there is a large anterior inferior acromial spur and a significant size spur at the footprint of the rotator cuff.



During surgery we found that the acromial spur was not eroding into the rotator cuff muscles and for this reason was left intact. The rotator cuff footprint bone spur was within the intact supraspinatus fibers and for this reason was left intact to avoid damage to rotator cuff from potential surgical removal. As it is well known one of the main reasons of failure of the total shoulder arthroplasty is rotator cuff denegeration and tearing. Removing the footprint "bone spur" would have caused damage to the rotator cuff and failure of the glenoid component in the long run.

The patient was seen in the office at 3 years postoperatively. She had no pain and active forward elevation of the shoulder to 170 degrees. Xrays are shown below




Although this is a case report (Level 5 of evidence) it highlights the need to think twice before saying to patients that "bone spurs in the shoulder = shoulder pain". Generalization and false analogy are common mistakes performed by scientists and physicians including myself.

Hippocrates was the first to introduce the concept of 'physis' and to transform hieratic or theocratic medicine into rational medicine. Correct use of new scientific knowledge, individualized management with a Hippocratic holistic approach and compassionate sympathy for the patient who suffers, should be considered in the years to come for maintaining the level of medical profession.

Wednesday, October 8, 2014

Surgical treatment of "multidirectional" shoulder instability.

This patient is in his 20s and presented to the office with multidirectional shoulder instability. He reported more 100 dislocations that they started since high school and were not painful at the beginning and without hx of trauma. He has generalized laxity and reports no recent trauma. At the time of evaluation he did not have a sulcus sign but had a positive Jerk's and negative apprehension test. The patient reported that the pain is a new problem and his past recent dislocations were painless. Currently, the dislocations are associated with severe pain and no neurologic deficits.

His shoulder would dislocate easily posteriorly and inferiorly as you can see on the XRs below that were taken in the office. 



His MRI demonstrated a posterior labrum tear and unfortunately was not ordered with intra-articular contrast by his PCP and thus information about laxity of the inferior capsule was not available.

Due to the significant pain and the failure of his 4 months of PT to provide relief we elected to proceed with arthroscopic reverse Bankart repair and possible arthroscopic capsular shift. On exam in the operating room and under anesthesia he had a +3 posterior load and shift test. Postoperative images after his repair as shown below. 






Symptomatic posterior inferior instability is an indication of multidirectional instability and those cases have either recurrent or persistent labral pathology or patulous capsules with occult multi-directional instability primarily manifesting in the posterior direction. 




There have been cases of a painful multidirectional instability that have no associated shoulder pathology other than patulous capsules. Although some authors report on performing a 180-270 deg repair it seems more appropriate to address the lesion/ first without extensive use of anchors and by repaing only the detached labrum. We will follow him closely hoping that this procedure will solve this difficult problem.

Monday, October 6, 2014

How does the brain can cause "shoulder pain". The importance of history taking

This is an interesting case that was seen in the office. This patient was referred to "the shoulder surgeon" for shoulder pain. The patient reported pain to bilateral shoulders and occasional numbness and tingling to bilateral arms associated with headaches. She did not report the headaches. She was asked specifically for those as she thought that these are two problems - headache and shoulder pain-are not related. She had no neurologic deficits.

We thought at the first visit that the patient had signs of cervical radiculopathy a common cause of "shoulder pain", numbness and tingling and headaches. XRs of the cervical spine were negative.

We advised her for 4 weeks of physical therapy but she did not improve. For this reason we obtained an MRI of the c spine which at our surprise demonstrated an arachnoid cyst in the cerebellar area. After discussing the case with a neurosurgeon these cysts are benign but can explain the headaches and some neurologic symptoms.

We learn every day!