Back Pain Doctor
Shoulder Labral Tear (including SLAP Tears)
Written by Dr Joshua Hatch, Musculoskeletal GP, RACGP Fellow, Diploma in Musculoskeletal Medicine (FSEM UK).
The labrum is a rim of strong fibrous tissue around the edge of the shoulder socket. It deepens the socket by roughly half, helps hold the joint stable, and anchors several shoulder ligaments as well as the long head of the biceps tendon. Tears are described by where they sit: SLAP tears at the top where the biceps attaches, Bankart lesions at the front-lower socket after a dislocation, and posterior tears at the back. They follow either a distinct injury (a fall onto an outstretched arm, a forceful pull or overhead reach, or a dislocation) or gradual wear from repeated overhead activity.
Assessment focuses on the history and a careful examination of shoulder movement, strength and stability, using positional tests to reproduce symptoms. The neck is checked too, since a pinched nerve there can mimic shoulder pain. X-rays do not show the labrum but exclude arthritis and fracture. MRI shows the soft tissue far better, and an MR arthrogram (contrast injected into the joint before the scan) is sometimes needed. Because labral fraying is common in shoulders that do not hurt from middle age onward, imaging is most useful when the result will change what happens next.
First-line care is usually non-surgical: settling the pain with simple analgesia or a short course of anti-inflammatory medication, modifying aggravating overhead load, and a physiotherapy program restoring capsule flexibility and rotator cuff strength, typically over three to six months. Surgery, most often arthroscopic, is considered when pain persists despite that program or when the shoulder is unstable, and involves either trimming the torn tissue, repairing it with sutures, or addressing the biceps attachment. Recovery after surgery is gradual, with a sling for two to six weeks and sport-specific work usually from around three months.
A labral tear that follows a dislocation, with the shoulder slipping or feeling unreliable, is covered in more detail in the guide to shoulder dislocation and instability.
Common symptoms
- Catching, locking, popping or grinding in the shoulder
- Pain with overhead lifting or in particular arm positions
- A feeling the shoulder might slip or come out of joint
- Reduced range of motion or loss of strength
Commonly seen in
Evidence for twelve treatment options in shoulder labral tear (including slap tears)
This is not a fixed ladder or a package of treatments. Every option is assessed independently against this diagnosis, including treatments with limited direct research that may still be reasonable for a clearly defined tissue target. The evidence level, likely benefit, risks, cost and alternatives are weighed at consultation.
Foundation: diagnosis, education and rehabilitation
The part of care with the broadest relevance. For many people it is enough on its own; other options are judged against it, not automatically added after it.
Diagnosis, education and progressive rehabilitation Working out what is driving the pain, explaining what your imaging does and does not mean, and building a graded loading plan you can actually follow. Core care
What it involves
Assessment to identify the likely pain source, an explanation of what the diagnosis means, adjustment of the loads that aggravate it, and a progressive strength and conditioning plan, with weight management where that is clinically relevant.
What the evidence shows
For degenerative structural problems, exercise matches surgery. A trial of 321 patients found exercise-based physiotherapy non-inferior to arthroscopic partial meniscectomy for knee function at five years, with the same rate of radiographic osteoarthritis progression (Noorduyn, JAMA Netw Open 2022), confirming an earlier trial at two years that also found better thigh strength in the exercise group (Kise, Br J Sports Med 2016). Even in adults aged 18 to 40 with MRI-verified tears, traumatic or not, early surgery was no better than twelve weeks of exercise and education at one year (Damsted, J Orthop Sports Phys Ther 2024).
Pairing reviewed 2026-09-02.
Where it fits
A tear on a scan is not automatically the thing to fix. Rehabilitation comes first, with surgical review where the history, examination and imaging together point to a problem that loading will not solve: mechanical locking, instability, or a failure to progress despite doing the work.
Muscle and symptom-modifying options
Useful only when the examination identifies the tissue they target or when short-term pain control creates a useful rehabilitation window.
Wet needling and trigger point injection (trigger point injection) A fine needle into a tender band of muscle, with a small volume of dilute glucose solution injected through it. No studies in this condition
What it involves
The needle is placed into the tender muscle band and a small volume of 5% glucose with a very dilute local anaesthetic (0.02-0.08%) is injected. Often done in the same visit as your assessment, and usable where the tender area sits deeper. Dry needling (the same technique with nothing injected) is not offered here.
What the evidence shows
A tested absence. Searched 12 November 2026 (PubMed: trigger point, dry needling, wet needling or intramuscular stimulation with labral, labrum or SLAP and shoulder, 1 record; a second search of myofascial pain or myofascial trigger with injection or needling, 0). The record is a single case of a rock climber with a labral tear whose shoulder muscles contained tender points and who improved with hands-on soft-tissue treatment and strengthening, with no needling or injection (Blanchette, J Can Chiropr Assoc 2015).
Pairing reviewed 2026-11-12.
Where it fits
Not a treatment for the labrum. Considered where a tender band in the rotator cuff or shoulder-blade muscles is adding to the pain, alongside the strengthening programme.
Ultrasound-guided injections Guidance means the needle can be seen reaching the target. What goes into the needle depends on the diagnosis. No treatment trials
What it involves
The injection is performed under ultrasound so the needle can be watched into the target structure. What is injected is decided by the diagnosis, and corticosteroid is used sparingly, for the reasons set out below.
What the evidence shows
A tested absence for treatment. Searched 12 November 2026 (PubMed: ultrasound-guided injection with labral, labrum or SLAP and shoulder, 14 records; trial and review pass, 1, on examination tests; a second search of corticosteroid, steroid or aspiration injection trials and reviews, 0; a further search of joint injection with labral tear, 45 records). The records are reviews, technique papers and imaging studies in which dye is injected before a scan. No trial has tested an injection as a treatment for a labral tear.
Pairing reviewed 2026-11-12.
Where it fits
Not a treatment for the labrum. An injection of local anaesthetic into the joint is occasionally used to test whether the joint is the source of pain when the diagnosis is unclear.
V-ACTOR vibration therapy (vibration therapy) Low-frequency vibration applied over tender muscle. Not a shockwave, despite sharing the machine. Plausible: no studies
What it involves
A vibration handpiece is moved over the tender muscle and fascia for a few minutes. It runs from the same STORZ MASTERPULS icon console as radial shockwave but is a separate handpiece delivering a different, gentler form of energy. No needles, no anaesthetic, no downtime.
What the evidence shows
No published clinical trial of this device in this condition. It is a vibration handpiece delivered from the same console as radial shockwave, and the rationale is myofascial rather than tendon- or bone-directed.
Pairing reviewed 2026-08-30.
Where it fits
A comfort measure used within a session where muscular tightness is limiting movement. Never the reason for the appointment, and not a substitute for the treatments that do have evidence.
Energy-based treatment options
Radial pressure wave, focused shockwave and EMTT have different targets and different evidence. They are assessed separately rather than treated as one category.
Radial or focused shockwave? Read the overviewRadial shockwave (radial pressure wave) Broad treatment across tender muscle and fascia, close to the surface. Only if relevant
What it involves
A handpiece is moved over the tender tissue while ballistic pressure pulses are delivered, using a transmitter head chosen for the tissue, including heads shaped for fascia and for the muscle either side of the spine. The pulse is strongest at the skin and weakens with depth, so this is mainly a myofascial treatment, though it can reach deeper in some areas. No anaesthetic, no downtime, usually a course of sessions about a week apart.
What the evidence shows
Radial shockwave has not been studied in a labral tear. PubMed searches on 25 October 2026 for shockwave terms with labrum, labral, SLAP or shoulder instability (3 records, none a treatment study) and for radial device terms with shoulder tears, dislocation, instability or labral injury (12 records, all in the rotator cuff, the elbow or the knee) found nothing in this condition.
Pairing reviewed 2026-10-25.
Where it fits
May help the tender muscle around the shoulder blade during rehabilitation. It does nothing for the labrum.
Focused shockwave (ESWT) A true shock wave converging at depth: for tendon, joint, ligament and bone. Only if relevant
What it involves
A focused system generates an acoustic shock wave that converges at a focal point set at a defined depth, concentrating the energy where the target is. This is the form used for tendon, joint, ligament and bone. Typically four to six sessions about a week apart, no anaesthetic and no formal downtime.
What the evidence shows
No study has tested shockwave in a labral tear or an unstable shoulder. A PubMed search on 25 October 2026 for shockwave, shock wave, ESWT or pressure wave with labrum, labral, SLAP or shoulder instability returned three records, none a shockwave treatment study (a kidney-stone trial named SLAP, a shoulder ultrasound review that excluded shockwave, and a frozen shoulder review). A trial pass over tears, ruptures and instability (12 records) found none at the labrum.
Pairing reviewed 2026-10-25.
Where it fits
Not a treatment for a labral tear. Considered only for a coexisting rotator cuff or biceps tendinopathy, alongside the shoulder stability program.
EMTT (magnetotransduction therapy) High-energy magnetic pulses applied over the area. Usually painless, no contact. Plausible: no studies
What it involves
You sit with the applicator positioned over the area for a short session. It is usually painless and needs no gel or skin contact. It is usually given as a course, commonly alongside shockwave.
What the evidence shows
There are no published randomised trials of EMTT in this condition, or in any musculoskeletal condition, that could be identified. The supporting work is laboratory work: EMTT increased tenocyte proliferation, migration and collagen expression in cultured human tendon cells (Mancini, Int J Mol Sci 2025). The nearest human evidence for a related electromagnetic therapy is negative. A randomised trial of pulsed electromagnetic field therapy added to eccentric exercise for Achilles tendinopathy found no improvement in outcome scores or tendon neovascularity over eccentric exercise alone (Ko, Orthop J Sports Med 2024).
Pairing reviewed 2026-08-30.
Where it fits
Offered only as an adjunct alongside treatment that does have evidence, never as the plan itself, and only after that gap is explained. Much of the EMTT literature is manufacturer-affiliated, which is part of why it is described this way.
Biologic and joint injection options
Each injection is assessed independently for the named diagnosis. Cost, uncertainty, likely benefit, risks and alternatives are part of the decision.
Platelet-rich plasma (PRP) Your own blood, concentrated and injected under ultrasound guidance. Only studied alongside surgery
What it involves
Blood is taken from your arm, spun to concentrate the platelets, and injected into the target under ultrasound guidance in the same appointment.
What the evidence shows
Searched for PRP at the shoulder labrum, including SLAP tears. Ten records, and a second pass that added bone marrow concentrate, contained no trial or case series of an injection used on its own. The only comparative study used PRP during an operation: in 40 people having a keyhole Bankart repair for recurrent dislocation, PRP placed at the repair was followed by better shoulder scores and greater labral height on MRI at twelve months, in a comparison that was not randomised (Azharuddin, Shoulder Elbow 2025). One published case, a woman with a SLAP tear, cuff tendinosis and frozen shoulder together, improved after three injections and physiotherapy, in a report that says it was not assessing whether the injection worked (Klausing, Cureus 2026). A panel of 71 shoulder surgeons could not reach agreement on any role for biologic injections in the non-operative care of posterior labral problems (Hurley, Arthroscopy 2024).
Pairing reviewed 2026-10-09.
Where it fits
Not something to rely on for a torn labrum. Rehabilitation is the core of non-operative care, and a surgical opinion is the next step where the shoulder stays unstable or keeps catching. PRP may come up where a painful cuff tendon sits alongside the labral tear, and the evidence for that belongs to the tendon, not the labrum.
Prolotherapy (dextrose) A course of dextrose injections into and around the structure and its attachments. Plausible: no studies
What it involves
Hypertonic dextrose is injected at the tender ligament and tendon attachments, and into the joint where relevant, usually as a series of treatments a few weeks apart.
What the evidence shows
No trial has tested prolotherapy in a glenoid labral tear. An Orthoregeneration Network review lists prolotherapy among the biological options studied around the shoulder, including the labrum, but grades the whole field level V expert opinion with mixed results and names no labral prolotherapy study (Condron, Arthroscopy 2021).
Pairing reviewed 2026-09-05.
Where it fits
Nothing about an injection reattaches a torn labrum. Considered only for the surrounding capsule and cuff pain that often accompanies the tear, and never presented as a repair.
Viscosupplementation (hyaluronic acid) A gel-like injection into an arthritic joint. Widely used, and genuinely contested. No studies in labral tears
What it involves
One or a short series of hyaluronic acid injections into the joint under ultrasound guidance.
What the evidence shows
A tested absence. Searched 12 November 2026 (PubMed: hyaluronic acid, hyaluronate, hyaluronan or viscosupplementation with labral, labrum or SLAP and shoulder, 4 records; trial and review pass, 0; second wording, 0). The four records are narrative reviews of shoulder treatment and a report of cartilage loss after surgery. No study has tested hyaluronic acid for a labral tear.
Pairing reviewed 2026-11-12.
Where it fits
Not a treatment for the labrum. Considered only where established arthritis of the shoulder joint is a separate part of the picture.
Nerve-targeted options
Relevant when examination identifies a superficial neuropathic pattern or a compressed peripheral nerve, not simply because pain is present.
Lyftogt perineural therapy (perineural injection therapy) A series of small dilute dextrose injections just under the skin, over tender superficial nerves. No studies in this condition
What it involves
Small injections of low-concentration dextrose, usually 5%, placed just beneath the skin along tender superficial nerves. Given as a series of short sessions.
What the evidence shows
A tested absence. Searched 12 November 2026 (PubMed: perineural injection, perineural dextrose, neural prolotherapy, glucopuncture, subcutaneous dextrose or 5% dextrose with labral, labrum or SLAP and shoulder, 0 records; a second search of dextrose with subcutaneous, perineural or nerve, 0).
Pairing reviewed 2026-11-12.
Where it fits
Not a treatment for the labrum, which lies deep inside the joint and out of reach of an injection under the skin.
Ultrasound-guided nerve hydrodissection Fluid placed around a nerve to free it from the surrounding tissue. Only if relevant
What it involves
Under ultrasound, fluid is placed in the plane around the nerve to separate it from the tissue that is tethering or compressing it.
What the evidence shows
There is no trial of hydrodissection for a labral tear, and the technique does not repair one. What has been published is two case reports in which shoulder pain attributed to a labral tear settled when a nerve was treated rather than the labrum: a national-level gymnast whose pain and restricted elevation resolved immediately after hydrodissection of the thoracodorsal and axillary nerves (Omodani, Cureus 2024), and an arm wrestler with persistent front-of-shoulder pain and weak internal rotation after labral debridement, who became pain-free within a month after hydrodissection of the lower subscapular nerve combined with subscapularis retraining (Naoi, Cureus 2025). Single cases, and both authors say so.
Pairing reviewed 2026-09-15.
Where it fits
Only where the assessment suggests a nerve is driving the pain alongside the labral finding. Worth considering, since labral tears are often seen on scans of shoulders that do not hurt. The shoulder itself is treated by the options higher up this page.
This is general information only and suitability is assessed individually. Treatments with limited or condition-dependent evidence may still be discussed, but only with clear explanation of the uncertainty, the expected benefit, risks, cost and alternatives. Red flags, progressive neurological symptoms or suspected serious pathology require a different pathway.
Every treatment above is described in full on the non-surgical treatments page, including what each one is used for and what the evidence supports. Ratings apply to the named diagnosis; an adjacent muscle, tendon, joint or nerve problem is assessed as a separate target. The method behind the ratings, and the treatments not offered, are set out on the evidence page.
Corticosteroid injection is reviewed separately for each diagnosis.
Cortisone reliably reduces pain in the short term, and that can be genuinely useful when pain is stopping you sleeping or moving enough to rehabilitate. Beyond that window the picture changes. A systematic review of 41 randomised trials and 2,672 participants found that corticosteroid injection reduced pain in the short term but that the effect reversed at intermediate and long term; in pooled analysis for lateral epicondylalgia the short-term effect was large (SMD 1.44, 95% CI 1.17 to 1.71) while no intervention was favoured at 26 weeks (-0.40, -0.67 to -0.14) and at 52 weeks (-0.31, -0.61 to -0.01) (Coombes, Lancet 2010). In a randomised trial in lateral epicondylalgia, 83 per cent of the corticosteroid group had completely recovered or much improved at one year against 96 per cent given a placebo injection, and recurrence ran at 54 per cent against 12 per cent; adding physiotherapy made no significant difference at one year (Coombes, JAMA 2013). In joints, repeated corticosteroid injections have been associated with cartilage loss. It does not repair anything.
So treatment plans are not built around it. Where an injection is the right call, the specific diagnosis and target are reviewed, what is being injected and why is discussed, the number is kept low, and it is paired with the loading work that changes the longer-term course.
When it might still be considered
- Pain severe enough to block rehabilitation
- A clear inflammatory or bursal target on imaging
- A specific short-term goal: a trip, a procedure, a return to work
- Diagnostic use, where the response shows where the pain is coming from
When a cortisone injection is worth doing, and when it is not
Other shoulder conditions
Pain in the same area can come from more than one source, and the label matters less than what the examination and history point to. These are the other guides for this region.
Frequently asked questions
What is a SLAP tear?
Does a labral tear always need surgery?
Can a labral tear on a scan be a normal age change?
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