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Peak Performance Physical Therapy & Sports Training EVIDENCE-BASED PRACTICE UPDATE February 2024 Clinical Decision Making: Diagnostic Accuracy of an Updated 2-test Cluster for Greater Trochanteric Hip Pain…reducing time, patient discomfort, and costs for lateral hip pain by Allison Pulvino, PT, MSPT, CMP, FAFS What would you do? A 57 yr old female pickleball player comes for evaluation of lateral L hip pain of gradual onset over the past 2+ months after the start of her doubles pickleball season. She is R handed and moved up a level to more competitive play and from one to two days/wk. She already has been on a therapeutic dose of NSAIDs with only slight symptom reduction and rested for 3+ weeks earlier in the season but symptoms recurred after gradually returning to play again. She denies any frank trauma and has never had ecchymosis at the hip nor been substantially debilitated w ADL. Stairs are painful with mild compensation the day after playing. Early evaluation shows ambulation is WNL without any Trendelenberg sign. Hip AROM is WNL. Plain films show very mild symmetric early degenerative changes at both hips. Hip scour was only subtly uncomfortable at inguinal region symmetrically. Suspicion is for Greater Trochanteric Pain Syndrome with gluteal tendinopathy and/or bursitis. Lumbar screening was unremarkable for potential radicular/referred pain to the hip. I would do the following hip tests to assess for GTPS….. Palpate gluteal tendons/bursa and perform FABER, resisted Abd, resisted ER, resisted external de-rotation, Ober, Trendelenberg standing tests Order an MRI to more clearly assess gluteal/bursa tissues Perform standing single leg squat test, 30sec single stance test, palpate gluteal tendons/bursa, resisted IR Palpate gluteal tendons/bursa and perform resisted Abd Do diagnostic US and consider doing bursa injection if indicated CURRENT EVIDENCE Kinsella R et al. Diagnostic Accuracy of Clinical Tests for Assessing Greater Trochanteric Pain Syndrome: A Systematic Review With Meta-Analysis. Journal of Ortho & Sports PT. January 2024. Volume 54. Number 1. 26-49. PEAK PERSPECTIVE SUMMARY Lateral hip pain due to greater trochanteric pain syndrome (GTPS) is a common complaint seen by physicians, affecting up to 25% of the population, with greater risk from increased age, female sex, low back pain, and greater adiposity. It is highly beneficial to be able to determine the diagnosis in a timely manner and with the least number of painful provocative testing needed for diagnosing the condition and deciding on best treatment options, especially when a patient is in the more painful/reactive acute or subacute stage of symptoms. While imaging can be helpful, plain films are of limited value outside of grading OA changes, which often show varying correlation to actual symptoms or function. MRI and US tests, while being expensive in addition to clinical exams, also have a higher than desired rate of false positive findings regarding abnormalities found in asymptomatic people. The ability to be able to quickly and accurately rule in or rule out certain diagnoses, in this case GTPS, using clinical testing while minimizing the cumulative discomfort we put the patient through is highly valuable and also can improve physician and therapist efficiency in managing busy caseloads. Kinsella et al. did a systematic review looking at diagnostic accuracy studies for GTPS that had 6 of 858 studies meet the criteria for inclusion. There were 272 total subjects (252 with symptoms and 20 without) with 314 hips assessed. Across all studies there were 15 different tests used. These were compared against reference MRI findings. Statistical analysis showed the best combination of positive likelihood ratio (LR) and negative LR for shifting the probability of a positive test confirming GTPS or a negative test ruling out GTPS showed the 2-test cluster of greater trochanteric palpation pain and pain with resisted hip abduction to be best. It was the only combination of tests whose + LR and -LR both shifted the probability of an accurate diagnosis significantly. Others had sensitivity and specificity values that were high on one and moderate or low on the other, same with LR’s. Some of these tests included the 30-second single leg stance, Trendelenburg sign, FABER, and resisted hip external de-rotation testing. The (+) LR for many tests include higher scores such as 30-second single leg stance and Trendelenburg sign, but not necessarily an acceptable (-)LR. Kinsella et al concluded both greater trochanter palpation testing (+ LR 2.62 and -LR 0.25) as well as resisted hip abduction tests (+LR 6.09 and -LR 0.45) as best for patients with GTPS lateral hip pain. Utilizing this 2-test cluster limits the manual manipulation and provocative testing required in a clinical exam of a patient’s hip through painful movements and stresses. One limitation of the study is the use of MRI as the “gold standard” since results can be positive for abnormal findings in asymptomatic patients. This study’s conclusions can assist with saving patients both time and money and also improve clinician efficiency. When the diagnosis is confirmed, the severely symptomatic patient may seek immediate relief with treatments such as cortisone or oral medications, however, in the majority of cases addressing the root underlying cause of the symptoms remains key. In the clinic we often see patients who have had good symptomatic control of their pain and temporarily improved function through various means, whether that be injection, NSAIDs, rest, activity modification etc. but without any specific evaluation of biomechanical/orthopedic issues contributing to the abnormal loading of lateral hip structures. In these cases patients too often exacerbate again upon return to activity because the very same loading patterns and inadequacies exist despite temporarily reduced pain and inflammation. Thorough detailed kinetic chain functional movements and manual assessments done as part of a physical therapy evaluation are necessary to identify limitation patterns in patients with lateral hip pain or a diagnosis from a physician confirming GTPS. The most common findings in PT exams can be hip flexion contractures, lack of functional hip capsular adduction with a common varus deformity (not just typical IT band tension) and/or a lack of functional hip IR mobility - both causing increased lateral tissues tensile loading…but also can be related to excessive hip adduction and/or IR, such as with anteversion or proximal effects of overpronation and dynamic knee valgus that may happen due to foot deformities or even as a compensation due to limited talocrural dorsiflexion (with squatting or lunging) . Others include especially the long leg side of a leg length discrepancy via repetitive tensile loading from always being “on stretch” to the shortened side having abnormal ITB tightness that causes tensile loading (or bursal compression) stresses with various wb activity positions. Hip abductor and external rotator weakness is another area of more obvious causative factors. Scoliosis compensations can also impact demands on the pelvis/hip region and must be assessed. Addressing both these local hip factors and also importantly the other adjacent or even contralateral kinetic chain issues is critical in optimizing long term success for GTPS patients. A focus on Applied Functional Science © approaches using authentic wb proprioceptive input and forces helps ensure the body can effectively transfer those exercise induced training effects into real-life ADL, sport, work, and recreational use. Too often traditional therapy hip exercises involving various NWB stimuli can be highly performed but the disconnect to authentic WB function leaves the hip still overloaded. Oftentimes even a simple correction of foot alignment with OTC, and less often custom, orthotics is helpful/necessary. A thorough functional biomechanics based approach is a key step in optimizing chances the patient can return to activity successfully long term and prevent the need for more invasive procedures down the road. THE PEAK PERFORMANCE EXPERIENCE Mary said: “I’ve had up to 8/10 pain and now I can walk a ton and use the stairs as many times as I want!” History: Chronic L lateral hip pain with hx of multiple cortisone injections in trochanteric bursa, and even recent tenex procedure 2 weeks before starting PT. Subjective: Pain gets up to 8/10. Unable to sit > 15min, pain with any stairs with ascending stairs more painful, unable to cross legs or sidelie in bed, and pain wakes her up at night. Objective: (*=pain) Initial Eval Re-Eval 8 wks Ober’s test Positive Negative Thomas test Positive Negative Squatting Not tested d/t pain Full depth and painfree S/L hip abduction test Unable* L 20x, R 16 (No pain/fatigued) SLB endurance Unable* 12 sec Sit-stand Pain* Pain-free Key Findings: Lack of hip extension, adduction and ER mobility, decreased hip abd strength with pain, lack of hamstring flexibility, midfoot pronation collapse in WB B, lack of spinal extension with only 20% and reversal of lordosis, significant gastroc tension affecting foot alignment, L > R hip flexor weakness, femoral IR alignment in WB. Treatment: Manual therapy: Anterior hip glide mobs in NWB and WB, hip ER jt mobs with passive stretching, WB hip mobs into adduction to assist WS in stance phase. Exercise: hip abductor strength progression from gravity eliminated AROM to standing hip OKC abduction to against gravity OKC hip abd to SL balance loading in static and then dynamic phases. Squat progression from bridging with hip abd strap to WB modified range squats to full depth. Lateral stepping progression starting with assist from SG and TR plane stepping drills. Hip flexor stretching and eccentric loading in WB with opp LE fwd stepping/reaching drills. Outcome: Pt able to sit > 30 min, transfers all pain free, walking as long as she would like w/o limitation, stairs pain free multiple times a day. Pain only up to 3/10 with extended periods of WB and advanced tasks such as lifting and carrying. (All progress documented after only 8 weeks of PT). ABSTRACT Background: There are numerous clinical tests that exist that can be performed during hip exams, but determining which are the most accurate can save the clinician time and help arrive at an appropriate diagnosis in less time with more certainty. Purpose: This study aimed to evaluate the accuracy of hip clinical tests that are used to diagnose greater trochanteric pain syndrome. Type: Systematic review with meta-analysis Methods: Literature search using key words mapped to diagnostic test accuracy for GTPS. Risk of bias was assessed using QUADAS-2 tool. And certainty of evidence GRADE framework. MetaDTA “R” random-effects models were used to summarize both individual and pooled data, including sensitivity, specificity, likelihood ratios and pretest-posttest probabilities. Findings: Of 858 studies, 23 full tests were assessed. 6 studies were included for review that involved 15 tests and 272 participants. In participants reporting lateral hip pain, a negative gluteal tendon (GT) palpation test followed by a negative resisted hip abduction test significantly reduced the posttest probability of GTPS from 59% to 14%. In those with a positive GT palpation test followed by a positive resisted hip abduction test, the posttest probability of GTPS significantly shifted from 59% to 96%. Author's Conclusion: Prior use of MRI for diagnosing GTPS is debated due to positive findings in asymptomatic individuals. This study finds a clinical test cluster that can accurately help confirm or refute the presence of GTPS in individuals reporting lateral hip pain. You can trust the Physical Therapists at PEAK PERFORMANCE to do a thorough evaluation, to search for related but underlying contributing factors to kinetic chain dysfunction, and to design exercise progressions that both respect tissue healing and creatively use biomechanics principles to prevent symptoms and optimize carryover to your patients' functional goals. Call us at 218-0240 to discuss your patient's specific needs. Peak Performance is just minutes away from your patients in Penfield, Fairport, Pittsford, Brighton, Rochester, and, of course, East Rochester. We promise Individualized, hands-on and biomechanically appropriate Physical Therapy for your patients. No "one-size-fits-all" approaches. We WILL go the extra mile and "dig deeper" to discover underlying causes for injury risk and delayed recovery using the most advanced Evidence Based methods available and, we’re able to make unique adjustments to exercise prescriptions to speed the return to function and to minimize or prevent symptoms from interfering. No surprises. No hassles. Confident your patient is in the right place. COME VISIT US AT 161 E Commercial St Just 1 mile off the 490 exit (585) 218-0240 www.PeakPTRochester.com