Postsurgical Sports Rehab: Knee & Shoulder- Module 2: Knee Ligament Injuries-ACL Course Description: This course is derived from the textbook by Robert Manske, PT, DPT, MEd, SCS, ATC, LATC, CSCS, “Postsurgical Orthopedic Sports Rehabilitation Knee & Shoulder” ©2006. The text focuses specifically on post-surgical guidelines for successful rehabilitation of the knee and shoulder for sports patients. Content covers basic concepts related to soft tissue healing, as well as core concepts in sports medicine rehabilitation, all of which lay the groundwork for discussions of specific protocols. Detailed descriptions of the latest post-surgical procedures for various knee and shoulder pathologies equip professionals with essential knowledge needed to recommend the most effective treatment plans. Module 2: Knee Ligament Injuries-ACL covers chapters 8 through 12 and 17. Chapter 8: Reconstruction Using Ipsilateral Patellar Tendon Autograft Chapter 9: Rehabilitation after Anterior Cruciate Ligament Reconstruction with a Contralateral Patellar Tendon Graft: Philosophy, Protocol, and Addressing Problems Chapter 10: Anterior Cruciate Ligament Reconstruction Using the Hamstring-Gracilis Tendon Autograft Chapter 11: Anterior Cruciate Ligament Reconstruction with Allograft Chapter 12: Complications in Anterior Cruciate Ligament Reconstruction Chapter 17: Preventing Injury to the Anterior Cruciate Ligament Methods of Instruction: Online course available via internet Target Audience: Physical Therapists, Physical Therapy Assistants, Occupational Therapists, Occupational Therapy Assistants, Athletic Trainers, and Certified Strength and Conditioning Specialists Educational Level: Intermediate Prerequisites: None Course Goals and Objectives: At the completion of this course, participants should be able to: 1. Identify the key events in the historical evolution of postsurgical rehabilitation 2. Understand why patient profiling is important in rehabilitation 1 of 101 3. List ways to reestablish normal range of motion postsurgically 4. Recognize the clinical pathways for ACL reconstruction and identify their phases 5. Identify pathways to assist in muscle reeducation 6. Identify phase I, II, III and IV rehabilitation protocols following a contralateral patellar tendon graft 7. List rehabilitation phases and subsequent goals 8. Identify potential problems/complications 9. Identify a program to alleviate anterior knee pain postsurgically 10. Recognize the most commonly used autografts 11. List advantages and disadvantages of a hamstring-gracilis tendon autograft 12. Understand the preferred method of hamstring anterior cruciate ligament reconstruction 13. Identify the phases in postoperative rehabilitation of the hamstring-gracilis tendon autograft 14. Define allograft 15. Identify the advantages and disadvantages of an allograft 16. List preoperative ACL management considerations 17. List modalities and explain their effectiveness postsurgically 18. Identify considerations with preoperative graft selection 19. Give an overview of the graft procedure 20. List terms to describe loss of motion 21. List the signs and symptoms of DVT 22. Identify anatomical structures of the ACL and PCL 23. Identify and differentiate between extrinsic and intrinsic risks for ligament injury 24. Recognize the Dynamic Neuromuscular Analysis Training Protocol Criteria for Obtaining Continuing Education Credits: A score of 70% or greater on the written post-test 2 of 101 DIRECTIONS FOR COMPLETING THE COURSE: 1. This course is offered in conjunction with and with written permission of Elsevier Science Publishing. 2. Review the goals and objectives for the module. 3. Review the course material. 4. We strongly suggest printing out a hard copy of the test. Mark your answers as you go along and then transfer them to the actual test. A printable test can be found when clicking on “View/Take Test” in your “My Account”. 5. After reading the course material, when you are ready to take the test, go back to your “My Account” and click on “View/Take Test”. 6. A grade of 70% or higher on the test is considered passing. If you have not scored 70% or higher, this indicates that the material was not fully comprehended. To obtain your completion certificate, please re-read the material and take the test again. 7. After passing the test, you will be required to fill out a short survey. After the survey, your certificate of completion will immediately appear. We suggest that you save a copy of your certificate to your computer and print a hard copy for your records. 8. You have up to one year to complete this course from the date of purchase. 9. If you have a question about the material, please email it to: [email protected] and we will forward it on to the author. For all other questions, or if we can help in any way, please don’t hesitate to contact us at [email protected] or 405-974-0164. 3 of 101 SEC TION II Knee Ligament Injuries 4 of 101 CHAPTER 8 Reconstruction Using Ipsilateral Patellar Tendon Autograft Robert E. Mangine, MEd, PT, ATC Stephen J. Minning, MPT Marsha Eifert-Mangine, EdD(c), PT, ATC W. Bays Gibson, MPT Angelo J. Colosimo, MD CHAPTER OUTLINE Historical Evolution of Postsurgical Rehabilitation Patient Profiling Program Objectives Reestablishing Range of Motion Weight Bearing Muscle Reeducation Muscle Function Phase II Return to Activity Summary 159 5 of 101 160 SECTION II: KNEE LIGAMENT INJURIES NO STRUCTURE IN SPORTS MEDICINE strated that intraarticular graft models did not follow literature has received as much attention as the anterior cruci- traditional healing models, but required a prolonged period ate ligament (ACL). From the first attempt to surgically for full maturation; this development became known as the correct the anatomic integrity of the ligament in 1898 by ligamentization process.7,10 Rehabilitation in this era was based Mayo Robards to today, the fascination with its function is on the slow response of the graft to revascularize and form precedent setting.1 Rehabilitation protocols for the ACL mature collagen. The result of these studies translated into patient have evolved in the literature, encompassing prolonged periods of casting, beginning initially for 12 weeks programs from both a conservative nature as well as more and then dwindling to 6 weeks. Weight bearing also required accelerated pathways.2,3 As Frank4 states, “It is generally an extended period of restriction for upward of 14 weeks. The acknowledged that rehabilitation is critical to the success of long-term sequelae of this process resulted in significant the treatment of the anterior cruciate ligament.”The current complications and led to new models of research to improve trend in rehabilitation is to establish pathways according to rehabilitation outcomes and decrease morbidity to the joint. evidence-based principles; these attempt to provide us with In the 1980s the trend changed yet again, this time doing a defined pathway. However, patient variability leads to away with casting entirely, while incorporating early continu- failure because outlying patient models go unrecognized; this ous passive motion. In the 1970s and 1980s a great deal of increases our failure rate secondary to arthrofibrosis versus work was performed that analyzed the effect of motion on redevelopment of joint laxity. the traumatized joint without deleterious side effects.8,11-15 The evolution of the ACL in terms of the existing methods The intent of this chapter is to describe a protocol designed for surgical intervention has taken many twistsand turns in to account for the wide variance of ACL graft selection the last quarter century. Although the initial trial of surgical because there is no conventional standard procedure. Attempts intervention is over 100 years old, anatomic and mechanical to define the ideal graft over the last 20 years have evolved studies since the 1970s have refined the procedure to to the current trend, which supplies the surgeon with several significantly improve the outcome.5-7 Simultaneous with the options. The three most popular methods involve the patellar advancement of surgical technique was the scientific rationale tendon, the hamstring, or a variety of allograft tissues16-18 of the rehabilitation pathway. Because of the wide variance (Figure 8-1). When working with past patients, the senior in surgical procedures, the rehabilitation specialist is required author has had the opportunity to rehabilitate patients with to manipulate protocols to match the given surgery. These the aforementioned grafts, as well as using Gore-Tex, carbon- concepts fueled the development of a model for protocol fi ber, and ligament augmentation devices. In most cases, design based on evaluation methods; this has produced reha- long-term outcome did not demonstrate an improved joint bilitation techniques resulting in suffi cient latitude to adjust stability or changes in functional outcomes, which has led to for patient variance. the current graft choices.19-21 In 1990 the senior author of this chapter undertook a Several recent studies comparing patellar tendon and process to identify key elements of postsurgical ACL reha- hamstring grafts show no significant difference in long-term bilitation and to strengthen the techniquesused by providing functional outcome and minimal biologic differences.18,19 a scientific foundation.2,8,9 The development of a consensus However, it is again important to note that the key variable panel composed of rehabilitation specialists explored the various facets of the rehabilitationprocess and provided evi- dence. The effort culminated in the published works identi- fied as evaluation-based rehabilitation. This chapter both explores and outlines a postsurgical management algorithm based on this format, which heightens the reader’s success in this patient population. The therapist must evaluate the fol- lowing areas: joint mechanics, surgical techniques, soft tissue response, muscle function, articular cartilage function, joint neurology, and psychologic factors. HISTORICAL EVOLUTION OF POSTSURGICAL REHABILITATION Just as surgicalintervention has evolved, so too has the reha- bilitation process. In the 1960s most postsurgical programs were designed with the foundation based on classic healing models, identifying initial healing in a 3- to 4-week period. ACL patients were placed in a cast for a short-term period, after which the patients were pushed to resume normal activ- ity in an 8-to 10-week period. Studies in the 1970s demon- Figure 8-1: ACL graft placement. 6 of 101 Chapter 8: ReconstructionUsing Ipsilateral Patellar Tendon Autograft 161 is the patient, which requires the clinician to profile the • Reestablish joint range of motion (ROM) to avoid dele- patient’s rehabilitative capability, and that time frame–based terious motion loss (primary objective) protocols may enhance the risk of biologic failure while still • Regulate postsurgical pain to avoid influence on ROM permitting functional activities. and muscle contraction • Reduce postsurgical hemarthrosis to avoid muscle shut- PATIENT PROFILING down and arthrofibrosis Outcome success is dependent on the understanding that • Advance weight bearing and development of normal gait patients have intrinsic and extrinsic variable factors that mechanics without affecting the biologic graft influence the level of activity to which they return. Intrinsic • Establish early exercise sequences to recondition the factors include but are not limited to tissue type, muscle type, muscular system while minimizing risk to the biologic potential for excessive scar formation, general medical well- graft being, osseous alignment, lower extremity mechanics, and • Retrain the mechanoreceptor system through proprio- compliance with the program. Extrinsic variables include but ception program are not limited to social habits, use of nicotine products, • Establish subjective and objective data to identify devia- environmental situations, and economic factors. Rehabilita- tions from norm to minimize influence on outcome tion requires the therapist to address many of these issues, but patient morphologic type is critical.2,8 • Establish a functional algorithm to verify functional A select group of patients demonstrate hyperelasticity of progression joint motion, which results in the clinician having to factor • Maintain progressive functional return to activity and in an altered collagen tissue variable in the rehabilitation sport pathway (Figure 8-2). Postsurgically these patients have the This chapter discusses each of these areas of the rehabili- potential to lay down poor collagen tissue that may compro- tation process and integrates acceptable exercises or proce- mise the biologic graft. Hypoelastic patients demonstrate dures that minimize the risk of biologic failure of the graft. tight joint arthrokinematics, and postsurgically may have a tendency to develop arthrofibrosis, which must be recognized early on to avoid motion complications. Normal elasticity, REESTABLISHING RANGE OF MOTION as demonstrated in the majority of patients, best fits the The use of continuous passive motion (CPM) after surgical traditional postsurgical time frame–based rehabilitation procedures arose from a combination of animal and human pathways. studies in the late 1970s and early 1980s.11-14 The primary focus of these studies was to assess forces applied by early PROGRAM OBJECTIVES motion on the biologic graft and surrounding tissues. This was a 180-degree shift in postsurgical management. The The key is to identify the rehabilitation components that rationale for the changing philosophy was the negative mor- the therapist must address in order to restore the ability to bidity of the joint associated with prolonged immobilization. perform activities of daily living, and then titrate the exercise Early studies were undertaken to determine if early use of program to higher levels of activity until the patient achieves CPM would provide a positive influence on graft revascu- an optimal level of function. The therapist considers a staged larization and collagen regeneration, but findings demon- approach and must assess the interaction of how one compo- strated no cause-and-effect relationship. The positive findings nent is infl uenced by another. The program includes the fol- identifi ed with these studies included the following: lowing components: • Earlier redevelopment of ROM • Decreased postsurgical pain • Decreased joint hemarthrosis • Decreased scar tissue • Maintaining viability of the articular cartilage in the joint Currently, we continue to recommend the use of a CPM machine (Figure 8-3) immediately after surgery for 10 to 12 hours per day until the unit is at maximum range. Most patients are able to tolerate gradual increase in motion with discontinuing the unit by 7 to 10 days. On average, the patients adjust their motion 10 to 15 degrees per day. If CPM Figure 8-2: Patient demonstrating hyperelasticity with is not desired, self-ranging exercise can be performed using hyperextension at the elbow and wrist. the contralateral extremity on an hourly basis. Clinically, the 7 of 101 162 SECTION II: KNEE LIGAMENT INJURIES Force with leg extension 250 200 150 s. b L 100 50 0 0˚ 10˚ 20˚ 30˚ 40˚ 50˚ 60˚ 70˚ 80˚ 90˚ Knee flexion angle ACL force ACL force Quadriceps force 5 lbs. on foot No weight on foot Figure 8-3: Continuous passive motion machine. Figure 8-4: Forces applied onACL during open kinetic chain extension. use of a Biodex extremity system (Biodex Medical Systems Inc., Shirley, NY) either as a warm-up before the exercise sessions or in the cool-down phase is benefi cial. Active-assistive ROM and active ROM are also permitted by the patient in the early phase to stimulate extensor mecha- nism training. Although some data suggest that open chain exercise movement may stress the healing tendon, no direct study has identified this as problematic22,23 (Figure 8-4). Two key side effects after surgery that delay the redevelop- ment of motion in the immediate phase are pain and joint hemarthrosis. To maximize pain relief in the initial 24 hours, the patient is provided not only narcotics but also a femoral nerve block for a longer period of pain suppression. The use of a nonsteroidal antiinflammatory drug (NSAID) may be recommended to control the postsurgical hemarthrosis. This intervention may also have a secondary effect on the joint Figure 8-5: Game Ready (CoolSystemsInc., Berkeley, CA) hemarthrosis. With the trend in endoscopic procedure for system of vasopneumatic cryotherapy. ACL surgery, there is generally a lesser amount of hemar- throsis. Minimizing joint hemarthrosis has led to the discon- tinued use of a joint hemovac, which can cause further inhibition to the extensor mechanism. The second influence on ROM is joint pressure, which is cold device. This is applied for the traditional 20 to 30 created by the hemarthrosis. This pressure within the joint minutes because it simultaneously generates pressure, allow- is applied to the capsular mechanoreceptors, resulting in a ing a deeper penetration. heightened pain level, exhibiting a limiting influence.24-26 Protocols that have evolved in the last 15 years have placed Although CPM may aid in the joint effusion reabsorption, a reduced emphasis on regaining ROM, instead concentrat- as well as NSAIDs, standard cryotherapy is a must. Aggres- ing on accelerating weight bearing and return to function. In sive use of ice, elevation, and compression is essential in these protocols the patients are placed in a long leg immobi- controlling joint swelling.27,28 Several modalities have been lizer and permitted full weight bearing. Little mention is developed that, when applied postsurgically, appear to be made of the need to regain ROM. Although it is eventually benefi cial in controlling the swelling. Immediately after regained, two questions arise: surgery we have recommended that the patient use a Game • How long does it take to regain ROM? Ready system (CoolSystems Inc., Berkeley, CA) (Figure 8-5) on a continuous basis. The patient can wear some of these • Is the potential for an arthrofi brotic complication devices even while in the CPM machine. Clinically, the increased? utilization of the Game Ready system (see Figure 8-5) has Multiple studies have described motion complication rates proven to be an added benefit by way of applying a pneumatic ranging from 9% to 74%.13,28-35 The implementation of an 8 of 101 Chapter 8: ReconstructionUsing Ipsilateral Patellar Tendon Autograft 163 immediate motion program minimizes the risk for compensation beginning on day 1. Concurrently, the patient this unwarranted side effect. If the patient has not regained is placed in a gait-training program to emphasize the proper full ROM by 3 weeks, the need to initiatea more aggressive positions and strength. program is essential. The senior author has developed an To progress the weight-bearing program, it is key for the algorithm that was published in 1992 dealing with this clinician to assess the factors that influence the gait pattern patient population.32Changes can occur in the periarticular and the biologic graft: tissues, decreasing ROM. The structures most involved com- • Motion must progress as weight bearing advances but is monly include the infrapatellar fat pad, which can result in not to be compromised at the expense of ROM. a patella infra; the posterior capsule; and the medial and lateral retinaculum of the patellar capsule.29-32 • Extensor strength is able to control 0-degree ROM The use of manual mobilization techniques may be mini- without extensor lag. mized if an expedited motion program is implemented. • Joint effusion is resolving as demonstrated by objective Because the primary intervention is motion in this phase, the measures. constant cycling of the joint capsule provides self-stress • Joint arthrometer evaluation is not significantly changed forces, maintaining capsular elasticityand self-mobilization. on a test-retest basis. In this initial phase the primary concern centers on the • Pain control has been achieved to avoid sympathetically patella and its normal superior mechanics. In the 1980s it maintained pain patterns. was not uncommon to have a patient develop a patella infra position with an incident rate of 11% to 15%. A patella infra Joint laxity evaluation has now become established as a is a distally translated patella, which leads to an extensor lag. standard measure to objectively assess the biologic graft. The Tambrello and colleagues33 described abnormal inferior dis- use of joint arthrometry as part of the comprehensive evalu- placement of the patella in a population of patellar tendon– ation process provides information that aids and integrates reconstructed patients, resulting in a mechanical block.The the findings to the rehabilitation pathway.36 The KT-1000 conclusion was that early patellar glides and extensor mecha- arthrometry system (MEDmetric Corporation, San Diego, nism reeducation were needed. Wojtys and colleagues34 CA) (Figure 8-6) is designed to measure joint translation, in described altered collagen alignment in patients who devel- one degree of freedom. This evaluation defines the ligament’s oped a patella infra, which was not reversible. The patients ability to restrain forces by an objective analysis. For in each of these studies also had a high percentage of patel- maximum reliability several factors must be taken into con- lofemoral complaints. Therefore our program emphasizes a sideration. The patient must be relaxed, without muscle clinical and self-directed program of patellar glides for a guarding of either the quadriceps or hamstrings. Accurate minimum of six cycles per day. Table 8-1 summarizes the placement of the arthrometer is critical, as wellas maintain- first weeks of the postsurgical phases and flows through the ing neutral positioning of the tibia. Consistent force must be ROM procedures. applied and the test performed for three trials to avoid patient accommodations. Force application by the clinician is 20 to 30 pounds, and WEIGHT BEARING the total anteroposterior translation should be compared The second goal in the early rehabilitation period is the titra- tion of the weight-bearing process. Again, there is a range of weight-bearing progression in current protocols, some of which advocate immediate full weight bearing in a locked extension brace, whereas others advocate the use of crutches for up to 4 to 5 weeks. The concept of immediate full weight bearing has prevailed with the thought that it facilitates faster extensor mechanism return. There appear to be no data sup- porting this claim, and in our experience the patient accom- modates for a poor extensor mechanism by ambulating in a leg vault gait pattern.3,32 Allowing an asymmetric gait pattern secondary to extensor mechanism weakness leads to the potential development of a recurvatum midstance position. This may result in an unwarranted side effect of a prolonged altered gait pattern at midstance caused by poor extensor eccentric control as the knee attempts to go into fl exion of 15 to 20 degrees, which is unable to be achieved. Our approach has evolved to allow immediate partial weight bearing in either a protective ROM device or no brace at all. Figure 8-6: KT-1000 arthrometry system (MEDmetric From the initial phase, gait mechanics are retrained without Corporation, San Diego, CA) for testing ligamentous laxity. 9 of 101 1 6 TABLE 8-1 4 S Clinical Pathway for Postoperative Management of ACL Reconstruction EC T I O WHEN PHASE 1 PHASE 2 PHASE 3 PHASE 4 N MAXIMAL MODERATE MINIMAL RETURN TO ACTIVITY II : PROTECTION PROTECTION PROTECTION 6 MONTHS AND LATER K N DAY 1 TO WEEK 4 WEEKS 5 TO 10 WEEKS 11 TO 24 E E L Patient presentation • Postoperative day 1–3 • Pain controlled • No instability • No instability I G • Postoperative • Joint swelling • No swelling • Muscle function 70% A M hemarthrosis controlled • No pain of noninvolved E • Postoperative pain • No increased joint • Good to normal • No symptoms of N T • Decreased ROM instability strength (MMT) instability, pain, or I N • Decreased voluntary • Full or near-full ROM • Unrestricted ADL swelling in the previous J U quadriceps contraction • Fair-plus to good function phase R • Dependent ambulation muscle strength (MMT) IE S • Postoperative brace • Muscular control of (may or may not have) joint • Independent ambulation Key evaluation • Pain scale • Pain scale • Ligament stability— • Full clinical procedures • Hemarthrosis—girth • Effusion—girth joint arthrometer examination • Ligament stability— • Ligament stability— • Muscle strength • Ligament stability joint arthrometer (day 7- joint arthrometer • Functional status • Muscle strength 14) • ROM • Functional status • ROM • Patellar mobility • Patellar mobility • Muscle strength • Muscle control • Functional status • Functional status Treatment intervention Early: Days 1-14 Early: Weeks 5-6 • Continue LE flexibility • Continue as Phase 3, • Protective bracing, ice, • Continue isometric • Advance PRE advance as appropriate compression, elevation exercise, multiple angles strengthening • Advance agility drills (PRICE) • Advance PRE • Advance closed chain • Advance running drills • Ambulation training: program: quadriceps, exercise • Implement drills crutches—WB 25%- hamstrings, • Advance specific to sport or 50% gastrocnemius, hips proprioceptive training occupation • PROM/AAROM • Advance closed chain • Agility drills specific • Determine the need for (range-limiting braces strengthening to skill protective bracing before may or may not be used • LE flexibility program • Advance endurance return to sport or work during this phase) • Advance trunk stability training • Patellar mobilization, • Endurance training: • Isokinetic training (if grades I and II bike, pool, ski machine, desired) etc. 10 of 101
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