8.3 Extremity Adjustive Techniques

General Principles of Extremity Adjusting

Extremity adjusting follows the same biomechanical logic as spinal adjusting -- restore accessory joint motion lost to capsular restriction, adhesion, or a minor positional fault -- but the joints involved are typically more mobile, more dependent on ligamentous and capsular integrity for stability, and more often subject to specific orthopedic red flags (recent fracture, dislocation, or full-thickness tendon/ligament rupture) that change management from adjustive care to referral. As with the spine, Part III tests both the indication (what dysfunction responds to an extremity adjustment) and the caution (what finding should stop or modify the plan).

Extremity joint mechanics are commonly described using the concave-convex rule: when a convex joint surface moves on a fixed concave surface, roll and glide occur in opposite directions; when a concave surface moves on a fixed convex surface, roll and glide occur in the same direction. This rule predicts the correct mobilization or adjustive glide direction to restore a specific accessory motion -- for example, restoring glenohumeral external rotation requires a posterior glide of the convex humeral head on the concave glenoid, the opposite direction from the bone's own rolling motion. Extremity technique also relies heavily on joint play (the small, involuntary accessory motions -- roll, glide, spin -- that accompany normal physiological movement but cannot be produced voluntarily by the patient) to identify which specific accessory motion is restricted before selecting a contact and thrust direction.

Shoulder

Indications: adhesive capsulitis ('frozen shoulder') with a capsular end-feel restriction, subacromial impingement syndrome driven by glenohumeral hypomobility, acromioclavicular (AC) joint sprain or fixation, and glenohumeral joint hypomobility contributing to compensatory scapulothoracic overuse. Long-axis distraction/traction manipulation and mobilization into the restricted capsular pattern (typically external rotation and abduction) are the primary corrective directions.

Cautions: a recent anterior or posterior dislocation (the capsule is not yet stable), a full-thickness rotator cuff tear (a thrust will not restore a torn tendon and can aggravate it), multidirectional instability (adjusting a joint that is already too mobile is counterproductive), and acute fracture of the proximal humerus or clavicle.

Elbow

Indications: lateral epicondylalgia ('tennis elbow') and medial epicondylalgia ('golfer's elbow') with an associated radiohumeral or ulnohumeral joint restriction, restricted radial head motion contributing to lateral elbow pain, and minor annular ligament/radial head positional faults.

Cautions: acute fracture (supracondylar, radial head), a joint effusion suggesting intra-articular pathology, septic or gouty arthritis (a hot, swollen, exquisitely tender joint), and significant ligamentous instability from recent trauma.

Wrist and Hand

Indications: carpal bone restriction (for example, reduced lunate or triquetrum mobility) contributing to wrist pain or reduced grip/extension, use as an adjunct in carpal tunnel syndrome management to improve carpal arch mobility, and first carpometacarpal (CMC) joint restriction in early thumb-base osteoarthritis.

Cautions: a recent or suspected scaphoid fracture (high risk of avascular necrosis if missed -- do not adjust through unresolved point tenderness in the anatomic snuffbox without imaging), an active inflammatory arthritis flare, Kienbock disease (lunate avascular necrosis), and significant ligamentous instability such as a scapholunate tear.

Across all four upper-extremity regions above, the same decision pattern recurs: a capsular, restrictive, or fixation-type finding (adhesive capsulitis, radial head fixation, carpal hypomobility) supports an adjustment, while a structural or vascular compromise finding (fracture, avascular necrosis, full-thickness tear, active infection) requires imaging, co-management, or referral before any thrust technique is considered at that joint.

Hip

Indications: femoroacetabular joint hypomobility contributing to groin or lateral hip pain, mild-to-moderate hip osteoarthritis with the classic capsular restriction pattern (loss of internal rotation and flexion first), and long-axis distraction to reduce joint compressive load and improve mobility.

Cautions: avascular necrosis of the femoral head, a recent total hip arthroplasty or hip fracture, a suspected labral tear with mechanical locking or instability (relative -- gentle mobilization may still be appropriate, but an aggressive thrust should be avoided), active joint infection, and significant unexplained hip pain in a child, which should first be screened for slipped capital femoral epiphysis or Legg-Calve-Perthes disease before any manual care.

Knee

Indications: patellofemoral tracking dysfunction from restricted patellar glide, proximal tibiofibular joint fixation (classically associated with a history of recurrent lateral ankle sprain and contributing to lateral knee or calf symptoms), minor tibiofemoral joint restriction without ligamentous instability, and some meniscal-related stiffness once red flags have been excluded.

Cautions: an acute grade III ligamentous tear (ACL, PCL, MCL, or LCL) with gross instability, a large joint effusion or hemarthrosis, recent knee surgery, septic arthritis, and a locked knee suggesting a displaced meniscal fragment, which requires orthopedic referral before manual care.

Ankle and Foot

Indications: talocrural and subtalar joint restriction following an inversion ankle sprain (a very common presentation once acute swelling and fracture are ruled out), cuboid syndrome ('cuboid whip' -- a subluxed or dropped cuboid causing lateral midfoot pain, often following an inversion injury or seen in dancers and runners), navicular or midtarsal restriction contributing to abnormal gait mechanics, and first metatarsophalangeal (MTP) joint restriction in early hallux limitus.

Cautions: an acute fracture (apply the Ottawa Ankle Rules to decide on imaging before any adjustive force), a Lisfranc (tarsometatarsal) injury, an unstable syndesmosis ('high ankle sprain') with a positive squeeze or external rotation test, active infection, and significant swelling or ecchymosis suggesting a higher-grade ligament disruption that has not yet been imaged.

Extremity Adjusting Decision Summary