The silent shoulder of the goalkeeper and the throwers

The outfield footballer’s shoulder almost never appears in injury statistics. The goalkeeper’s shoulder, on the other hand, is one of the most punished anatomical areas in professional sport. Every plank start, every corner clearance and every block demands the rotator cuff, the muscle complex that stabilizes the shoulder and controls much of the arm’s movements, to work in extreme positions and with loads that very few outfield players experience.

This exposure makes the complex formed by supraspinatus, infraspinatus, subscapularis and teres minor (the SITS muscles) the most vulnerable link in the goalkeeper’s upper limb. It is worth knowing the functional anatomy of the cuff, the typical injury mechanisms in goalkeepers and other throwing sports in order to establish preventive protocols with the support of scientific evidence.

The relevance of the rotator cuff is better understood if one takes into account that the shoulder is the most mobile joint in the human body. This extraordinary freedom of movement allows complex overhead gestures to be performed, the arm to be accelerated at high speed and high forces to be absorbed during falls or impacts. However, that mobility comes at a price: bone stability is limited and depends heavily on soft structures such as muscles, tendons, ligaments, and the glenoid labrum.

Among all of them, the rotator cuff plays a central role, as it keeps the head of the humerus centered in the glenoid cavity during movement and prevents displacements that could compromise joint function. When this structure becomes fatigued or injured, not only does the strength of the shoulder decrease, but its mechanical stability is also altered and the risk of more complex injuries increases.

Although goalkeepers cover approximately half the distance of an outfield player and have lower overall energy requirements, the mechanical demands derived from repeated jumps, falls, blocks and throws concentrate enormous stress on certain anatomical structures

Functional Rotator Cuff Anatomy: The SITS Muscles

The rotator cuff is made up of four muscles whose tendons fuse together to form a muscle capsule that surrounds the glenohumeral joint, serving as a dynamic stabilizer of the shoulder. Acronym SITS for its initials in English:

Supraspinatus — origin in the supraspinous fossa of the scapula, insertion into the humeral trochiter. It is the initiator of shoulder abduction up to 15° and the most injured of the four. Your tendon is vulnerable to subacromial impingement.
Infraspinatus — origin in the infraspinous fossa, insertion into the trochiter. Main external rotator of the shoulder.
Teres minor (teres minor) — origin at the lateral border of the scapula. External rotator and adductor.
Subscapularis — originating in the subscapularis fossa (anterior aspect of the scapula), insertion into the trochin. Single internal rotator of the cuff.

Unlike muscles such as the deltoid or pectoralis major, which are responsible for generating much of the force of movement, SITS muscles do not act as primary movers. Its function is much more subtle: to make adjustments of just a few millimeters to keep the head of the humerus centered in the glenoid cavity throughout the joint path. When the coordination between the four muscles is disturbed, the humeral head tends to move upwards, compressing the supraspinatus tendon against the acromion and favoring the appearance of subacromial impingement syndrome. A pioneering stuy conducted with 14 prof. handball players and 20 healthy volunteers analyzed the activation sequence of shoulder muscles during basic clinical examination movements. The results showed that the periscapularis muscles are systematically activated before those of the rotator cuff, which are the last to come into action. In addition, no differences were found in the order of activation between elite athletes specialized in overhead gestures and non-athletes, suggesting that the anatomical adaptations of these sports do not modify this basic neuromuscular pattern.

The study also observed that muscle activation is accelerated when movement is carried out with a load and at medium speeds, findings that may be useful for designing rehabilitation and injury prevention programs. The authors believe that this activation sequence could serve as a reference to identify alterations in athletes with pathologies such as subacromial impingement syndrome, a common injury in throwing disciplines.

Why the goalkeeper’s shoulder is different from the field player’s shoulder

The goalkeeper subjects his shoulder to three types of load absent from field play:

Plank fall — when stretching to stop a ball at medium or long range, the shoulder impacts the ground with the joint in abduction and rotation positions. The compressive forces can exceed 2-3 times the body weight.
Long-range corner clearance or goal kick — the technical gesture loads the sleeve in a rapid sequence of lifting, maximum external rotation and explosive internal rotation.
Blocking the ball with outstretched arms — the reception of a powerful shot (shot at more than 100 km/h) transmits direct load to the glenohumeral joint.

These three situations are repeated dozens of times in every training session and match. Over the years, they generate an accumulated load that no general trainer sufficiently attends to. The energy expenditure of an elite goalkeeper is low in cardiovascular terms but high in terms of shoulder and knee joints. In fact, although goalkeepers cover approximately half the distance of an outfield player and have lower overall energy requirements, the mechanical demands derived from jumping, falling, blocking and repeated throws concentrate enormous stress on certain anatomical structures. This apparent contradiction explains why goalkeeper injury prevention should not only focus on endurance or general physical condition, but also on the protection of fabrics subjected to thousands of micro-impacts and highly demanding gestures throughout the season.

Typical Injury Mechanisms

The most common rotator cuff injury in goalkeepers and shooting athletes is subacromial impingement syndrome. In it, the supraspinatus tendon is repeatedly compressed between the head of the humerus and the acromion each time the arm is raised above the head. The typical evolution of this problem usually follows the following phases:

Insidious shoulder pain, especially at night and when raising the arm above the head.
Progressive tendinopathy of the supraspinosus, with tendon thickening visible on ultrasound.
Partial rupture of the tendon in advanced cases.
Complete rupture in older patients or after an acute event (fall with impact).

Other common conditions:

Subacromial-subdeltoid bursitis — inflammation of the bursa that separates the cuff from the acromion. It often coexists with impingement.
Subscapular tendinopathy — less common but characteristic of clearance gestures with sudden internal rotation.
SLAP (Superior Labrum from Anterior to Posterior) lesion — affects the glenoid labrum, not strictly the cuff, but clinically it can be confused.

For years it has been assumed that subacromial impingement syndrome was associated with alterations in the activation sequence of the shoulder muscles. However, a study carried out by FC Barcelona researchers questions this hypothesis, a study carried out by FC Barcelona researchers qustions this hypothesis. After comparing healthy people and patients diagnosed with this pathology using electromyography during different shoulder movements performed at different speeds and with different loads, the authors found no significant differences in the order of muscle activation between the two groups.

In all cases, the first muscles to activate were the deltoid and upper trapezius, while the rotator cuff muscles went into action later and without a clearly defined sequence. These results suggest that the origin of the syndrome could be more complex than previously thought and cast doubt on the usefulness of some rehabilitation programs focused exclusively on re-educating muscle activation patterns, reinforcing the need for an individualized assessment of each athlete.

Epidemiology in Goalkeepers and Throwing Sports

The literature on shoulder injuries in football goalkeepers is scarcer than that of outfield players, but the available series—complemented by data from handball and volleyball, which share a biomechanical pattern—provide significant data. PubMed searchers for shoulder injuries in goalkeepers ans shooting sports give a clue to the incidence:

Prevalence of shoulder pain in professional goalkeepers: 15-25% over the course of a season.
Overuse injury represents 60-70% of the total, compared to 30-40% of acute traumatic injury.
Average time of sick leave due to subacromial impingement: 18-30 days.
Recurrence rate in goalkeepers without a specific preventive protocol: 25-35%.

Unlike lower extremity muscle injuries, shoulder injuries tend to become chronic if not addressed early. An outfield player with a hamstring returns to the game in two weeks; A goalkeeper with untreated impingement can drag the infield for several seasons.

Clinical Evaluation: Cuff Functional Testing

In-office rotator cuff examination combines inspection, palpation, and specific functional testing. The most commonly used:

Jobe test (or empty can test) — assesses the supraspinose. Arms at 90° abduction, 30° horizontal flexion and internal rotation (thumb down). Downward resistance. Pain or weakness suggests involvement of the supraspinosus.
Patte’s test — evaluates the external rotators (infraspinasus and teres minor). Arms at 90° abduction, elbow flexed at 90°, external rotation against resistance.
Lift-off and Belly-press tests — evaluate the subscapular. Hand behind the back, attempted separation against resistance.
Neer test — impingement provocation: passive elevation of the arm in the scapular plane. Pain reproduces the picture.
Hawkins-Kennedy test — impingement with flexion and passive internal rotation.

The combination of several positive tests increases diagnostic sensitivity. Imaging confirmation is performed with ultrasound (first-line) and MRI (for refractory cases or suspected rupture). Muscle injuries account for more than 30% of all sports injuries and constitute one of the main medical problems in professional football. It is estimated that an elite team can suffer around 15 muscle injuries per season, with a cumulative loss of more than 200 days of training and competition.

Therefore, in addition to prevention, it is essential to establish an accurate diagnosis that allows the severity of the injury to be determined, treatment to be guided, and the recovery time and risk of relapse to be estimated. In this context, magnetic resonance imaging has become a key tool, and different classification systems have tried to improve prognostic capacity. Among them, the FC Barcelona-Aspetar classification stands out for incorporating factors such as the mechanism of injury, the location of the injury and the degree of involvement of the connective tissue, although specialists agree that no model is yet able to predict with total accuracy the moment of return to competition.

Prevention: Science-backed exercises

The rotator cuff preventive protocol has been standardized over the past fifteen years. The key components, with a good level of evidence:

External Rotator Specific Strengthening Exercises

External rotation with elastic band, elbow close to the body (90° flexion), pulling outwards. It is mainly active infraspinosum and teres minor.
External rotation in lateral decubitus with a light dumbbell. It isolates the infraspinous more.
Sleeper stretch for posterior internal rotation mobility (corrects common deficiency in pitchers).

Scapular stability work

Y-T-W (lying on your stomach): Arm raises forming the letters Y, T and W. Active serratus anterior, middle trapezius and scapular rotators.
Wall slides: sliding your arms on a wall while maintaining contact with your back. Focus on serratus anterior.
Push-up plus: horizontal thrust with emphasis on the scapular protraction phase.

Motor Control Exercises

Quadrupeds with destabilization: alternately raise one arm and the opposite leg. Activates the cuff in synergy with the core.
Plank with rotation: introduces trunk rotation with unilateral support.
Plyometric ball wall throws: soft throws against the wall, in controlled positions. They work the cuff in its actual operating mode.

A routine of 15 minutes, 3 times a week, applied consistently, significantly reduces the incidence of shoulder conditions in throwing athletes. The specific literature is available.

Dedicating just a few minutes a week to shoulder care can translate into weeks or even months of availability gained over a season

Specific program for goalkeepers

A realistic protocol for the professional goalkeeper season, based on the available literature and published adaptations for throwing sports:

Pre-season (4 weeks): 3 sessions per week, 30-40 minutes per session, focus on strengthening. Volume: 3 sets of 10-12 repetitions of each exercise.
Competitive phase (rest of the season): 2 maintenance sessions per week, 15-20 minutes each. Integrated into the warm-up or prevention block.
After the game: short unloading routine (10 minutes) with a focus on mobility and gentle activation of the cuff.
In episodes of pain or overload: reduce the load of training clearance and blocking by 50% for 5-7 days, maintaining preventive work and adding isometric exercises to maintain muscle mass.

Differential diagnosis: when it is not the cuff

Not all shoulder pain in a goalkeeper is rotator cuff. Differential diagnoses to consider:

Anterior glenohumeral instability — common in young goalkeepers with previous dislocations. It is diagnosed with the apprehension test.
Acromioclavicular pathology — pain more localized to the AC joint, common after direct falls on the shoulder.
Referred neck pain — C5-C6 radiculopathy can simulate cuff picture. Mandatory neurological examination.
Acute traumatic injuries — fractures of the clavicle or major tubercle after falling.

Clinical differentiation is usually possible with a structured examination, but confirmatory imaging is necessary in doubtful or refractory cases.

The scientific evidence accumulated in recent years points in a clear direction: the goalkeeper’s shoulder cannot be approached with the same criteria as that of an outfield player. The biomechanical demands derived from blocking, stretching, falling, and repeated throwing subject the rotator cuff and the stabilizing musculature of the scapula to a specific load that favors the appearance of overuse, impingement, tendinopathies, and functional deficits. Although these injuries rarely make headlines, their impact on a player’s performance and availability can be considerable.

Prevention is also particularly cost-effective in this context. Research shows that short, targeted strengthening, neuromuscular control, and scapular stability programs can reduce the incidence of injury and improve shoulder tolerance to the demands of competition. It is not only about increasing the strength of the rotator cuff, but also about optimizing the coordination of the entire joint complex, monitoring training loads and early detection of signs of fatigue or loss of function before the injury appears.

In modern football, the goalkeeper is no longer just the last outfield player: he is a profile with unique physical demands that require his own preventive work. Dedicating just a few minutes a week to shoulder care can translate into weeks or even months of availability gained over the course of a season. It is not an accessory complement to training, but a direct investment in health, performance and sports longevity. The season of any club is measured, in part, by the availability of its goalkeepers. And that availability often starts with a well-cared for rotator cuff.

2 comments

The silent shoulder of the goalkeeper and the throwers