This disclosure relates to a surgical technique for improving the joint kinematics of an unstable joint using graft tissue.
Normal joint kinematics are achieved through balanced soft tissues that surround the articulating bones of a joint. An unstable joint can occur if there is significant disruption of the articulating bones or the surrounding soft tissues. The resulting joint instability may cause pain, dysfunction, accelerated bone loss, soft tissue tears and premature arthritis. Unstable joints can also occur within a replaced joint subsequent to an arthroplasty procedure.
This disclosure details reconstruction techniques for improving the joint kinematics of an unstable joint. Exemplary reconstruction techniques include fixating a graft to the articulating bones of the joint using appropriately placed sutures.
A method for reconstructing a joint according to an exemplary aspect of the present disclosure includes, among other things, fixating at least one suture inside a joint space, retrieving the at least one suture from inside the joint space, passing the at least one suture through a graft at a location external to the joint space, shuttling the graft into the joint space and fixating the graft using the at least one suture.
In a further non-limiting embodiment of the foregoing method, the method includes inserting a first suture anchor and a second suture anchor into a first bone, inserting a third suture anchor and a fourth suture anchor into a second bone, measuring a first distance between the first suture anchor and the second suture anchor and a second distance between the third suture anchor and the fourth suture anchor and sizing the graft based on the first distance and the second distance.
In a further non-limiting embodiment of either of the foregoing methods, the first bone is a glenoid of a scapula and the second bone is a humerus.
In a further non-limiting embodiment of any of the foregoing methods, the method includes securing the graft to the first bone and the second bone using sutures connected to the first suture anchor, the second suture anchor, the third suture anchor and the fourth suture anchor.
In a further non-limiting embodiment of any of the foregoing methods, the method includes measuring a third distance between the first suture anchor and the third suture anchor and a fourth distance between the second suture anchor and the fourth suture anchor and sizing the graft based on the first distance, the second distance, the third distance and the fourth distance.
In a further non-limiting embodiment of any of the foregoing methods, fixating the at least one suture inside the joint space includes mounting the at least one suture to a bone using a suture anchor.
In a further non-limiting embodiment of any of the foregoing methods, the method includes punching a hole through the graft prior to passing the at least one suture through the graft.
In a further non-limiting embodiment of any of the foregoing methods, the method includes fixating multiple suture anchors inside the joint space, taking multiple measurements between the multiple suture anchors, and sizing the graft based on the multiple measurements.
In a further non-limiting embodiment of any of the foregoing methods, sizing the graft includes making the graft larger than the size indicated by the multiple measurements.
In a further non-limiting embodiment of any of the foregoing methods, the method includes marking the graft to indicate the location where each of a plurality of sutures connected to the multiple suture anchors are to pass through the graft.
In a further non-limiting embodiment of any of the foregoing methods, the method includes grasping a first suture of the plurality of sutures, pulling the first suture out of the joint space, passing the first suture through the graft, repeating the grasping, pulling and passing steps with a second suture of the plurality of sutures, and shuttling the graft into the joint space using the first suture and the second suture.
In a further non-limiting embodiment of any of the foregoing methods, the at least one suture includes multiple sutures and the multiple sutures are used to shuttle the graft inside the joint space.
In a further non-limiting embodiment of any of the foregoing methods, the graft is shuttled by the multiple sutures using a pulley technique.
In a further non-limiting embodiment of any of the foregoing methods, fixating the graft includes attaching the graft to a bone by tying a knot in the at least one suture.
In a further non-limiting embodiment of any of the foregoing methods, fixating the graft includes attaching the graft to a bone using one or more suture anchors mounted in the bone.
In a further non-limiting embodiment of any of the foregoing methods, reconstructing the joint includes reconstructing a superior capsule of a shoulder joint that includes a massive irreparable rotator cuff tear.
A method for reconstructing a joint according to another exemplary aspect of the present disclosure includes, among other things, performing either an anterior capsular reconstruction or a posterior capsular reconstruction of a shoulder joint to improve joint kinematics.
In a further non-limiting embodiment of the foregoing methods, performing the anterior capsular reconstruction or the posterior capsular reconstruction includes implanting a graft inside the shoulder joint.
In a further non-limiting embodiment of either of the foregoing methods, the method includes securing the graft to articulating bones of the shoulder joint using sutures.
In a further non-limiting embodiment of any of the foregoing methods, the method includes shuttling the sutures through the graft while the graft is located outside of the shoulder joint prior to pulling the graft into the shoulder joint.
A method for performing a reconstruction at a rotator cuff according to another exemplary aspect of the present disclosure includes, among other things, exposing an area at a superior glenoid site to improve visibility at the superior glenoid site and preparing bone beds of the superior glenoid site and of a greater tuberosity to expose a bleeding base of bone bed. Two or more suture anchors are placed through a predetermined site in the bone bed of the superior glenoid site. The suture anchors do not penetrate an articular surface. The method includes retrieving at least one suture from inside the joint space, passing the at least one suture through a graft at a location external to the joint space, shuttling the graft into the joint space using a double pulley system, fixating the graft using the at least one suture, and performing a partial closure of the rotator cuff over the top of the graft.
In a further non-limiting embodiment of the foregoing methods, exposing the area at the superior glenoid site comprises performing a posterior interval slide by cutting between a supraspinatus tendon and an infraspinatus tendon to create a gap between the two tendons so as to expand an open work space above the superior glenoid site.
A kit for joint kinematic reconstruction according to another exemplary aspect of the present disclosure includes, among other things, at least (6) suture anchors pre-loaded with a suture tape, at least one dermal allograft and disposable drills, drill guides, punches, and taps for the suture anchors.
In a further non-limiting embodiment of the foregoing method, the method includes an instructional insert with instructive diagrams and a description of a methodology for performing a kinematic reconstruction technique.
In a further non-limiting embodiment of either of the foregoing methods, the at least one dermal graft is pre-threaded with suture.
The embodiments, examples and alternatives of the preceding paragraphs, the claims, or the following description and drawings, including any of their various aspects or respective individual features, may be taken independently or in any combination. Features described in connection with one embodiment are applicable to all embodiments, unless such features are incompatible.
The various features and advantages of this disclosure will become apparent to those skilled in the art from the following detailed description. The drawings that accompany the detailed description can be briefly described as follows.
This disclosure describes surgical techniques for reconstructing an unstable joint. An exemplary surgical technique includes passing a graft into a joint space and securing the graft within the joint space using multiple properly placed sutures. The surgical techniques can be performed to prepare, deliver, and fixate a graft in a relatively fast, anatomically accurate manner that improves joint kinematics.
In some non-limiting embodiments, the surgical techniques include retrieving one or more sutures from inside the joint space, passing the sutures through a graft at a location external to the joint space, shuttling the graft into the joint space, and fixating the graft using the sutures. In other non-limiting embodiments, the graft is sized based on multiple measurements that mark the fixation points of the various sutures. These and other features are described in greater detail in the following paragraphs of this detailed description.
A capsule 20 generally covers the joint 10 and is surrounded and reinforced by various muscles, tendons and ligaments that are responsible for keeping the adjoining bones of the joint 10 together. The joint 10 may become unstable if there is significant disruption of the articulating bones (e.g., the humerus 16 and the glenoid 14), the capsule 20, or other surrounding muscles, tendons and/or ligaments. In one non-limiting embodiment, the joint 10 could become unstable in response to a massive irreparable rotator cuff tear.
This disclosure describes joint kinematic reconstruction techniques for reconstructing an unstable joint, such as in response to a massive irreparable rotator cuff tear or other injury. Although joint kinematic reconstruction of a shoulder joint is described throughout this disclosure as one example joint kinematic reconstruction technique, this disclosure is not intended to be limited to shoulder reconstructions. In other words, the various techniques described herein may be employed to reconstruct and/or improve the joint kinematics of any joint of the human musculoskeletal system.
Referring first to
The sutures 21 may be fixated inside the joint space 25 using various suture anchors 22. Prior to implanting the suture anchors 22, the bone beds of a first bone B1 and a second bone B2 may be prepared for the surgical procedure by debriding, etc. For example, in a non-limiting embodiment where rotator cuff repair is being performed, bone beds of the superior glenoid and greater tuberosity of the humerus can be prepared down to a bleeding base. Electrocautery and/or a motorized shaver may be used to remove soft tissue from the superior glenoid and from the greater tuberosity of the humerus, and a high speed burr may be used to debride the bone to a bleeding base. A ring curette may be used to prepare the articular margin. In preparing the bone surface of the superior glenoid, the superior labrum may become partially detached as a bucket-handle fragment, in which case the torn and unstable portion of the labrum is excised. Since the root of the biceps attaches to the superior labrum in an area that may become unstable as the bone bed is prepared, thereby rendering the biceps root unstable, biceps tenodesis or tenotomy can be performed in cases of superior capsular reconstruction of the shoulder in order to eliminate biceps instability as a potential pain generator. A manual or mechanical pick (e.g., Arthrex's PowerPick™) may be used to create channels (bone vents) between the marrow and the surface of the bone, particularly on the greater tuberosity of the humerus. This procedure serves to enhance access of growth factors and mesenchymal stem cells to the healing interface between the graft and the bone.
Any number of suture anchors 22 fixated inside the joint space 25 for attaching the sutures 21, and this disclosure is not limited to the specific number of suture anchors shown in this embodiment. The actual number of suture anchors 22 used is surgery specific and may be quantified as the minimum number of suture anchors that is necessary to achieve graft fixation to the bone or bones of the unstable joint.
Holes 28 may optionally be pre-formed for receiving the suture anchors 22 (see
In one non-limiting embodiment, shown in
One or more sutures 21 are connected to each of the suture anchors 22A, 22B, 22C and 22D. Therefore, once the suture anchors 22A, 22B, 22C and 22D have been implanted, the sutures 21 are fixated at desired locations within the joint space 25. In other words, the suture anchors 22A, 22B, 22C and 22D mark the fixation locations of the sutures 21.
In one non-limiting embodiment, the suture anchor 22A is inserted at an interior position AP of the first bone B1 and the suture anchor 22B is inserted at a posterior position PP of the first bone B1. Similarly, the suture anchor 22C may be inserted at an anterior position AP2 position and the suture anchor 22D may be inserted at a posterior position PP2 of the second bone B2. In another non-limiting embodiment, the suture anchors 22A, 22B are implanted into the superior glenoid of the scapula and the suture anchors 22C, 22D are implanted into the articular margin of the greater tuberosity of the humerus. Other locations, however, are also contemplated.
Referring now to
In one non-limiting embodiment, at least four dimensions are measured between the suture anchors 22A-22D for sizing a graft. For example, a first distance D1 may be measured between the suture anchors 22A and 22B (see
Referring first to
Next, as shown in
Referring now to
Referring now to
In another non-limiting embodiment, the graft 30 is advanced into the joint space 25 using a pulley technique. For example, an individual suture limb 56 from each suture 21 that has been fixated to the first bone B1 may be tied together over a rigid instrument 57 (see
The graft 30 may next be fixated into place using the various sutures 21. A variety of fixation methods can be utilized to achieve fixation of the graft 30.
Alternatively, as shown in
Alternatively, sutures 21 may be passed through the lateral part of the graft 30 arthroscopically with a suture passer (e.g., Arthrex's FastPass Scorpion™) after the graft 30 has been shuttled into the shoulder. The graft 30 may be fixed either by knotted double row techniques which may be either bridging (linked double-row) or non-bridging (non-linked double-row), or it may be fixed by single-row knotted or knotless techniques. After the graft 30 has been secured, medial vascularized tissue may optionally be incorporated into the repair. For example, the suture limbs from the superior glenoid anchors can be left long after securing the graft 30, and then the tails can be used to suture viable tissues from the adjacent rotator cuff into the graft 30, thereby encouraging vascularization of the graft 30. If portions of the rotator cuff can be repaired over the top of the graft 30 by means of margin convergence side-to-side sutures, then a partial repair of those cuff tissues can be performed, even after a posterior interval slide has been performed. If tendon-to-bone repair of the posterior rotator cuff was performed prior to placing the graft 30, then a side-to-side repair of the posterior cuff to the graft 30 can be performed. Anteriorly, if there is robust rotator interval tissue adjacent to the anterior margin of the graft 30, it can be sutured to the graft 30 in side-to-side fashion. If there is no rotator interval tissue remaining, then the anterior margin of the graft 30 may be left as an unsecured free margin.
Candidates for a superior capsular reconstruction are typically in one of two categories of massive irreparable rotator cuff tears: 1) those with pseudoparalysis; and 2) those with proximal migration of the humerus allowing creation of a painful acromiohumeral articulation.
Occasionally a patient may have a combination of irreparable rotator cuff tear with proximal humeral migration and/or pseudoparalysis in association with significant degenerative arthritis of the shoulder, yet not be a candidate for shoulder arthroplasty either because of young age, high activity level, or both. In such patients, one might perform a dual grafting procedure, using one graft for a superior capsular reconstruction and another graft (e.g. Arthroflex® dermal allograft) for resurfacing the degenerative glenoid in order to re-establish the pad between the glenoid and the humeral head that has been lost by degeneration of the articular cartilage. In such cases, a capsular release of the anterior, posterior and inferior capsules can first be performed. Then, the glenoid resurfacing is done by introducing and fixing the graft to knotted or knotless anchors around the periphery of the glenoid. Once the resurfacing graft has been fixed in place, the superior capsular reconstruction is performed with a graft. In some cases, the same anchors in the superior glenoid might be used to help secure both grafts, while in other cases separate sets of anchors in the superior glenoid might be needed for each graft.
In one non-limiting implementation of the surgical technique described above and illustrated in
Augmentation of biologic tissues used in anterior capsular reconstructions ACR and posterior capsular reconstructions PCR may also be performed utilizing the surgical techniques described herein (e.g., augmentation of an anterior split subscapularis tendon flap that is done in the case of capsular insufficiency). Anterior capsular reconstruction ACR may also be performed along with a Latarjet reconstruction (coracoid bone graft), particularly if the subscapularis muscle-tendon unit has been significantly damaged. Similar techniques can also be performed to improve joint kinematics in other unstable joints of the human musculoskeletal system. In addition, any tissue that was cut can then be repaired or partially repaired as much as possible, such as by suture.
A second step of the joint kinematic reconstruction technique may include preparing the bone beds down to a bleeding base (superior glenoid and greater tuberosity of humerus) with ring curettes or other tools.
Referring now to
An alternative way of sizing the graft and measuring between suture anchors 22X, 22Y is shown in
A dual graft allograft technique is schematically illustrated in
According to another non-limiting embodiment, and as part of a method for resurfacing the glenoid after performing capsular release, triple-loaded suture anchors 300 can be placed 3 to 4 mm medial to the “corner” of the superior glenoid (see
In yet another aspect of an exemplary reconstruction technique, a linked, double row graft fixation with sutures can be employed. As shown in
Another non-limiting embodiment, shown in
A kit for joint kinematic reconstruction can also be provided. The kit may include, for example, the materials necessary for capsular reconstruction. In some embodiments, the kit would include:
Optionally, the kit could include an instructional insert to include, for example, instructive diagrams and/or describing the methodology provided herein to perform a kinematic reconstruction technique, such as for a capsular reconstruction.
In order that the disclosure described herein may be more fully understood, the following examples are set forth. It should be understood that these examples are for illustrative purposes only and are not to be construed as limiting this disclosure in any manner.
This example describes one non-limiting embodiment of an exemplary capsular reconstruction method.
An active 64 year old female in excellent general health presented with shoulder pain of 5 years duration, along with increasing weakness that is beginning to restrict her activities, which include golf, gardening, and yard work.
On exam, the patient was able to raise her arm overhead, but was very weak. She was not able to hold up a half gallon of milk and take it out of the refrigerator. X-rays showed proximal migration of the humerus under the acromion, but no arthritic changes.
The patient had been advised that remedy of the problem required a reverse total shoulder replacement. Patient concern about the relatively high rate of complications with this procedure as well as the activity restrictions that would be required if she underwent this procedure prompted her to seek alternative advise.
Alternative shoulder surgery was performed as follows:
A partial rotator cuff repair was performed on the parts of the rotator cuff that were reparable (in this case, this included the subscapularis tendon and half of the infraspinatus tendon). A posterior interval slide was performed, but a complete repair of the rotator cuff was not possible. A superior capsular reconstruction was performed as described in the foregoing sections, using a dermal allograft. Partial repair of the rotator cuff over the top of the dermal graft was also performed. The surgery was performed on an outpatient basis, and the patient went home the same day. She had minimal pain after her surgery, and hardly needed any pain medication. She wore a sling for 6 weeks, and then began a program of passive range of motion. At 4 months postoperatively, the patient was seen, and found to have strength on the operated side to almost a normal level and equal to the other side. She reported to have no pain; and had complete range of motion of the shoulder.
The patient demonstrated a rapid recovery of strength not demonstrated with other options, including arthroplasty and arthroscopic partial repair. In addition, the procedure performed was much less costly than a shoulder replacement without the added risks of significantly higher complications with reverse total shoulder replacement. In addition, the patient had much less pain than she would have had with the replacement procedure.
Importantly, the patient did not eliminate any future treatment options by having this procedure. If it were to fail at some point in the future, all other treatment options would still be available to her, including reverse total shoulder replacement.
The particularly significant aspects of the present example, as relates the method in providing repair of a significant rotator cuff repair using superior capsular reconstruction as described herein included:
This non-limiting example demonstrates the use of a reconstructive methodology in a human patient having an irreparable rotator cuff tear.
A rotator cuff tear is considered irreparable if, in the opinion of the attending surgeon, the tear cannot be fully mobilized to the extent that the tendon can be fully repaired back to its normal bone attachments.
A male patient, age 38, weight 220 pounds, in otherwise good general physical condition, presented with inability to raise his arm after a series of shoulder injuries that had occurred in the course of his occupation as a laborer in the oilfields. The patient could not raise his arm above 30 degrees, and he had profound weakness, as well as constant pain in the shoulder. He was not educationally equipped to do any occupation except manual labor.
Shoulder surgery was performed according to the following protocol. A partial repair of the rotator cuff was performed. The subscapularis and the infraspinatus were repaired. The supraspinatus was irreparable. A biceps tenodesis was performed, followed by a superior capsular reconstruction with dermal allograft.
The patient was hospitalized for a short period and released. The patient's surgery was performed on an outpatient basis and he was released after 2 hours in the recovery room. He was kept in a sling for 6 weeks, and then a passive range of motion program was begun, followed by strengthening at 4 months postoperatively. He returned to regular duty at work at 6 months postoperatively. I last saw him at 10 months post-op, at which point he had full range of motion and normal strength. In this case, the patient was not a candidate for a reverse total shoulder replacement because of his young age and because of his high demand level as a manual laborer. In this case, a young high demand individual was returned to an active productive life by this procedure, whereas other surgical options were highly unlikely to be able to provide such a result.
The patient was allowed to heal and a follow-up on the status of the patient's surgery was performed. Compared to other rotator cuff repair approaches, the range of motion was significantly better (greater) than that observed typically in patients having undergone more conventional rotator cuff repair procedures. Care should be taken not to allow the anchors to penetrate the articular surface, as such often results in the patient developing an arthritic shoulder.
This non-limiting example illustrates the use of sutures (rather than suture tape) to create double row fixation of the lateral part of the graft.
A 45 year old female injured her shoulder when she fell down her front porch steps. She presented with pain and weakness with difficulty lifting the arm overhead.
Surgery was performed arthroscopically on an outpatient basis. The tear demonstrated questionable tendon quality, and it was felt that medial knots would be stronger than a knotless technique in this patient. Medial suture anchors were first passed. They were then individually passed through the graft and tied as mattress sutures. The suture limbs were then secured just lateral to the graft with 2 knotless suture anchors.
The surgery was performed on an outpatient basis and she went home the same day. In this case, a knotted technique was used because of the greater biomechanical strength of fixation with medial knots.
She wore a sling for 6 weeks, and then started on a stretching program followed by a strengthening program at 4 months post-op. She was allowed to return to golf at 9 months post-op. When she was last seen in the office at 9 months post-op, she had essentially a normal exam.
The patient is a small (under 5 feet tall), 70 year old female with chronic shoulder pain and progressive weakness. The patient indicated pain with overhead motion even though full motion was demonstrated. X-rays show proximal migration of the humerus due to a massive rotator cuff tear.
Arthroscopic superior capsular reconstruction was performed using a dermal allograft. Because of the fact that her greater tuberosity of the humerus was so small, a single row repair was done as there was not enough bone surface to implant two rows of suture anchors.
The patient went home two hours after her surgery. At 6 weeks post-op her sling was discontinued. She resumed gardening at 4 months postop.
This case illustrates an example in which there was not enough room on the bone footprint to place a double row of anchors, so single row repair was done and yielded satisfactory results.
This non-limiting example presents a prophetic surgical method for clinically managing a 40 year old athletic male who had been involved in a motor vehicle accident 3 years earlier. He was in a coma for 3 weeks, so nondisplaced fractures of the proximal humerus combined with massive rotator cuff tear were not treated initially. After he had regained consciousness and was dismissed to physical rehabilitation, his shoulder improved to the point that he declined further treatment. Two years later, he presented to the clinic with severe shoulder pain, loss of 30% of his active and passive range of motion, and significant weakness.
X-rays showed degenerative arthritis of the shoulder. MRI scan confirmed a massive rotator cuff tear. The patient was considered to be too young and too active for consideration of reverse total shoulder arthroplasty, but the arthritis was too far advanced for a simple arthroscopic debridement to achieve any pain relief.
A biologic glenoid resurfacing with dermal allograft was used to treat the patient's arthritis, in combination with superior capsular reconstruction with a separate dermal allograft to treat the massive rotator cuff tear. The procedure was performed arthroscopically.
First a capsular release was performed in order to create enough suppleness in the joint for all the various arthroscopic manipulations and procedures to be done. Then the biologic resurfacing of the glenoid was performed, attaching a templated dermal allograft to the periphery of the glenoid with 6 suture anchors after arthroscopically shuttling the graft into the joint. Then a second dermal allograft was fashioned to cover the defect in the rotator cuff. The second graft was shuttled into the shoulder where it was fixed to the superior glenoid with 2 suture anchors and to the greater tuberosity of the humerus with 4 suture anchors.
This case represents a method for treating a combination of shoulder arthritis and a massive cuff tear in a way that avoids total joint replacement. By preserving the patient's joint for many more years with this procedure, the patient could potentially maintain a vigorous lifestyle until he reached a more appropriate age for total shoulder replacement.
Although the different non-limiting embodiments are illustrated as having specific components, the embodiments of this disclosure are not limited to those particular combinations. It is possible to use some of the components or features from any of the non-limiting embodiments in combination with features or components from any of the other non-limiting embodiments.
It should be understood that like reference numerals identify corresponding or similar elements throughout the several drawings. It should also be understood that although a particular component arrangement is disclosed and illustrated in these exemplary embodiments, other arrangements could also benefit from the teachings of this disclosure.
The foregoing description shall be interpreted as illustrative and not in any limiting sense. A worker of ordinary skill in the art would understand that certain modifications could come within the scope of this disclosure. For these reasons, the following claims should be studied to determine the true scope and content of this disclosure.
This application is a continuation of U.S. patent application Ser. No. 14/872,194, which was filed on Oct. 1, 2015, the entire disclosure of which is incorporated herein by reference.
Number | Date | Country | |
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Parent | 14872194 | Oct 2015 | US |
Child | 16205647 | US |