Shoulder Symptom Modification Procedure
Original Editor - Naomi O'Reilly
Top Contributors - Rachael Lowe, Naomi O'Reilly, Kim Jackson, George Prudden, Simisola Ajeyalemi, Rucha Gadgil, Jess Bell, Tony Lowe, Lucinda hampton, Robin Tacchetti and Alexandra Stead
Introduction
The Shoulder Symptom Modification Procedure (SSMP) is a structured, clinician-led assessment framework developed by Lewis in 2009 to guide the evaluation and management of individuals presenting with rotator cuff tendinopathy and subacromial pain syndrome (SAPS).[1] It was developed in response to growing evidence that conventional orthopaedic shoulder tests demonstrate insufficient diagnostic accuracy for clinical decision-making.[1][2]
Limitations of Conventional Orthopaedic Testing
Systematic reviews have consistently demonstrated that standard orthopaedic shoulder tests exhibit low specificity and inadequate likelihood ratios.[2][3] These tests are unable to isolate individual tendons or structures, and consequently offer limited capacity to inform accurate diagnosis or guide patient management.[2][3]
The diagnostic limitations of shoulder testing reflect the complexity of shoulder neurobiology.[4] The shoulder complex contains a high density of peripheral sensory receptors, consistent with the significant sensory control demands and biomechanical forces acting across the region.[4] When tissue injury occurs, the resulting neurochemical response lowers the activation threshold of nociceptors, increasing peripheral sensitivity.[4] This peripheral sensitisation, combined with central sensitisation processes, contributes to the low reliability of isolated provocation tests.[4] Accordingly, any shoulder assessment, including the SSMP, should be integrated within a comprehensive subjective history and physical examination to identify comparable signs.[1][5]
Purpose and Principles
The SSMP does not aim to identify a specific structural diagnosis or isolate the exact source of pain.[1] Instead, it provides a systematic method to identify mechanical factors, including movement, posture, and manual techniques, that modify a person's symptoms during aggravating activities.[5] These modifying factors then serve as a basis for directing treatment.[5]
This distinction is clinically significant: the SSMP shifts the focus of assessment from diagnostic labelling towards understanding what alters symptom behaviour, which is more directly applicable to rehabilitation planning.[1][5] The procedure does not seek to label a pathology or identify the exact cause of pain, but rather to identify what changes the person's experience of their symptoms.[5]
The SSMP has demonstrated acceptable inter-rater reliability in persons presenting with shoulder pain.[6]
Procedure
Stage 1: Identification of Aggravating Activities
The first stage of the SSMP requires the clinician to identify one to three movements, activities, or postures that reliably reproduce the person's symptoms.[5] These form the reference activities against which each subsequent stage of the procedure is assessed.[5]
Each subsequent stage is then applied sequentially to these reference activities.[5] The clinician evaluates whether each technique produces a clinically meaningful change in the person's symptoms, including, but not limited to, reduction in pain intensity, increased range of movement, diminished paraesthesia, or an improved sense of stability.[5] The person determines what constitutes a meaningful change, as individual priorities and presentations vary.[5] If any stage produces a meaningful positive change, that technique informs the direction of treatment.[5]
Stage 2: Thoracic Spine Modification
The clinician assesses whether altering thoracic kyphosis, either increasing or decreasing it, influences the person's symptoms during the reference activity.[5] If thoracic modification fully resolves symptoms, management is directed towards postural education, therapeutic exercise including motor control training in the context of provocative activities, and manual therapy targeting the thoracic spine.[5][7]
Stage 3: Scapular Repositioning
When thoracic modification only partially alleviates symptoms, or produces no change, the clinician assesses the effect of altering scapular position.[5] Scapular repositioning may be performed in various directions to determine whether a positional change reduces the person's symptoms during the reference activity.[5]
Stage 4: Humeral Head Positioning
If scapular procedures do not fully resolve symptoms, the clinician evaluates the effect of humeral head repositioning techniques.[5] These include inferior glide (depression), superior glide (elevation), and anterior or posterior translatory techniques.[5] The direction and magnitude of the technique are guided by their effect on the person's symptoms.[5]
Stage 5: Neuromodulation
Where the preceding stages fail to produce sufficient symptom modification, the clinician applies manual techniques across the cervical, thoracic, and glenohumeral regions.[5] These may include soft tissue mobilisation and joint mobilisation techniques, applied with the aim of assessing their neuromodulatory effect on pain.[5]
Clinical Relevance
The SSMP is designed for use by physiotherapists and rehabilitation professionals working with persons presenting with shoulder pain of suspected rotator cuff or subacromial origin.[5] It is applicable within a standard clinical consultation and does not require specialist imaging or diagnostic equipment.[5] Findings directly inform treatment selection, supporting a hypothesis-driven approach to management.[1][5]
The procedure reflects a person-centred framework in which the individual's report of symptom change, rather than a clinician-imposed threshold — determines clinical significance.[5] This aligns with contemporary pain science, which recognises that peripheral and central sensitisation limit the accuracy of isolated provocation tests, and supports an approach that prioritises symptom behaviour over structural diagnosis.[4][1]
Clinicians are advised to interpret SSMP findings in conjunction with a thorough subjective history, physical examination, and where appropriate, diagnostic imaging results.[5][2]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Lewis JS. Rotator cuff tendinopathy/subacromial impingement syndrome: is it time for a new method of assessment? Br J Sports Med. 2009;43(4):259–264. doi:10.1136/bjsm.2008.052183
- ↑ 2.0 2.1 2.2 2.3 Hegedus EJ, Goode A, Campbell S, Morin A, Tamaddoni M, Moorman CT, Cook C. Physical examination tests of the shoulder: a systematic review with meta-analysis of individual tests. Br J Sports Med. 2008;42(2):80–92. doi:10.1136/bjsm.2007.038406
- ↑ 3.0 3.1 Hughes PC, Taylor NF, Green RA. Most clinical tests cannot accurately diagnose rotator cuff pathology: a systematic review. Aust J Physiother. 2008;54(3):159–170. doi:10.1016/s0004-9514(08)70022-9
- ↑ 4.0 4.1 4.2 4.3 4.4 Struyf F, Lluch E, Falla D, Meeus M, Noten S, Nijs J. Influence of shoulder pain on muscle function: implications for the assessment and therapy of shoulder disorders. Eur J Appl Physiol. 2015;115(2):225–234. doi:10.1007/s00421-014-3059-7
- ↑ 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.17 5.18 5.19 5.20 5.21 5.22 5.23 5.24 Lewis J, McCreesh K, Roy JS, Ginn K. Rotator cuff tendinopathy: navigating the diagnosis–management conundrum. J Orthop Sports Phys Ther. 2015;45(11):923–937. doi:10.2519/jospt.2015.5941
- ↑ Lewis JS, McCreesh K, Barratt E, Hegedus EJ, Sim J. Inter-rater reliability of the Shoulder Symptom Modification Procedure in people with shoulder pain. BMJ Open Sport Exerc Med. 2016;2(1):e000181. doi:10.1136/bmjsem-2016-000181
- ↑ Meadows S, Smith G, Vaswani R. Physiotherapist survey: increasing thoracic spine movement within the management of chronic subacromial impingement syndrome. J Bodyw Mov Ther. 2020;24(1):93–99. doi:10.1016/j.jbmt.2019.10.003